- stunnel-users - stunnel.org

Getting Stunnel working with Verizon.net SMTP
by Gary Kuznitz 12 Jun '13

12 Jun '13

I can't seem to connect with email at Verizon.net SMTP. I can connect with POP3. The Stunnel.log shows: 2013.06.11 19:27:04 LOG5[3752:2524]: stunnel 4.56 on x86-pc-msvc-1500 platform 2013.06.11 19:27:04 LOG5[3752:2524]: Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013 2013.06.11 19:27:04 LOG5[3752:2524]: Threading:WIN32 Sockets:SELECT,IPv6 SSL:ENGINE,OCSP,FIPS 2013.06.11 19:27:04 LOG5[3752:2524]: Reading configuration from file stunnel.conf 2013.06.11 19:27:04 LOG5[3752:2524]: FIPS mode is enabled 2013.06.11 19:27:04 LOG5[3752:2524]: Configuration successful I have IPv6 turned off in my network settings. The Stunnel.conf looks like this: output = stunnel.log cert = stunnel.pem options = NO_SSLv2 [Verizon-pop3] client = yes accept = 11014 connect = pop.verizon.net:995 delay = yes [Verizon-smtp] client = yes accept = 11015 connect = smtp.verizon.net:465 delay = yes I do not have SSL turned on in my email client. The log from my email client looks like this: --- Tue, 11 Jun 2013 16:38:55 --- Connect to 'localhost' port 10115, timeout 60. 16:38:56.897 15: Peer connect failure (the host has refused the connection). The Verizon account is FIOS. I am not connected directly to the Verizon ISP. I can't send email without SSL. Does anyone have any idea how I can get this working? Thanks, Gary Kuznitz

3 4

Certificate failure to verify with verify = 4 option
by Thomas Eifert 10 Jun '13

10 Jun '13

Correction: The cert issuer is Startcom Ltd, not Startcom LLC. -- Greetings; Stunnel 4.56 running under Win 7 SP1 x86. Recently, the owners of a server I regularly connect to updated their server certificate; the former had expired at the end of May. As soon as that event occurred, I deleted the old certificate, then used the "save peer certificate" function of Stunnel to get the updated one. However, the new certificate fails to verify, even with the verify = 4 option in Stunnel. The error message is similar to what I used to get when doing a verify = 3 with some certificates. The general error output of Stunnel is: CERT: Verification error: unable to get local issuer certificate 2013.06.09 16:37:46 LOG4[608:2336]: Certificate check failed: depth=0 When I open the new certificate with: openssl x509 -text -in certname.pem and view the certificate details, I'm not seeing anything obvious. The certificate is within a valid date range, and contains the same basic elements as other certs I've viewed. The certificate appears to have been issued by Startcom LLC. If I comment out the verify statement, I'm able to successfully negotiate an SSL connection with the server. I realize that this may be more of an openssl issue than an issue with Stunnel. Nevertheless, I thought I'd start here and throw it out to the floor for comments. Anyone have any ideas or have run into this issue? Regards, Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

3 3

weird stunnel problem
by Stephen Griffin 03 Jun '13

03 Jun '13

Hello A few days ago we ran into issue where the number of stunnel threads sky rocketed to over 3000 open stunnel threads. When this happen connections to our website slowed down considerably or failed to connect. It was resolved by flipping to our other proxy which accepted any new connections. It took about 5 minutes for the threads to die off on the other proxy. I was wondering if anyone has come across this problem? Here are some details of our stunnel version and config. Stunnel 4.44 with patch for x-forwarder [root@brm-proxy01 ~]# stunnel -version stunnel 4.44 on x86_64-unknown-linux-gnu platform Compiled/running with OpenSSL 1.0.0-fips 29 Mar 2010 Threading:PTHREAD SSL:ENGINE Auth:LIBWRAP Sockets:POLL,IPv6 Global options: debug = daemon.notice pid = /var/run/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options: ciphers = ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH curve = prime256v1 session = 300 seconds sslVersion = TLSv1 for client, all for server stack = 65536 bytes TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none appriacated Our stunnel.conf. /etc/stunnel/stunnel.conf #sslVersion = TLSv1 pid = /var/run/stunnel.pid syslog = yes output = /var/log/stunnel.log debug = 3 [https] cert = /etc/stunnel/ssl/wildcard.blah.com.pem accept = 443 connect = 80 xforwardedfor = yes TIMEOUTbusy = 300 TIMEOUTclose = 0 TIMEOUTconnect = 10 TIMEOUTidle = 60 Is there anything we could add for performance tuning in stunnel? Any suggestions on what I could look for when this happens again would be appreciated. Our platform does between 2000 to 3000 rpm (request per minute) during peak hours. We constantly see a lot of these messages every hour but I am not sure what is happening as the connections seem to be working. SSL_accept: Peer suddenly disconnected There was a higher spike of them as per the normal rate during our incident described above. Thanks Stephen Griffin Sr. System Administrator www.achievers.com<http://www.achievers.com/> Confidentiality: The information contained in this e-mail and any attachments are confidential. If you are not the intended recipient, you may not copy or distribute this information. If you have received this communication in error, please notify the sender immediately and delete it from your system.

1 0

x-forwarded-for.patch for stunnel 4.55/4.56
by Shannon Carver 17 May '13

17 May '13

Hi all, Just wondering if anyone know's a an xforwardedfor patch available for the latest versions of stunnel? Thanks Shannon Carver

2 1

Strange Stunnel crash (no errors, issues, anything)
by Alfred Kernaghan 17 May '13

17 May '13

Hi, Long time lurker, new poster though! I've got two servers running Stunnel v2.54 (yet to upgrade as I've been waiting for an x-forwardfor patch to become available). I noticed recently that one Stunnel nodes had exited, requiring a restart. I'm not sure if it's a co-incidence, but I've only just changed the cert on both installs last night. This, of course, is very concerning as it's only just become a problem, but being the core SSL endpoint, it knocks our server offline until it's restarted. Now comes the interesting bit, I've run the SSL Labs SSL Health check at https://www.ssllabs.com/ssltest/ just to see if anything comes out of it, and noticed that without fail every time it runs (and the first server is online) it'll know Stunnel offline as it goes through it's tests: *"Testing TLS v1.0...." "Testing TLS v1.2...."* *-- SERVER OFFLINE --* This was noticed by a fluke, but appears to happen every time I restart and then rerun the test. I'm not getting any segfaults, or errors from stunnel, and it only affects the one (primary) server. Can anyone shed any light as to what might be causing it, how I can get any more info out of stunnel, or better yet, fix it completely? Thanks all Alfie

2 2

Error with stunnel 4.56 on Ubuntu 12
by Laura Fried 12 May '13

12 May '13

I am getting a success with doing the configure, make and make install. However when I go to start up stunnel I get the following error message: Clients allowed=500 stunnel 4.56 on x86_64-unknown-linux-gnu platform Compiled/running with OpenSSL 1.0.1 14 Mar 2012 Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS Reading configuration from file /usr/local/etc/stunnel/stunnel.conf FIPS_mode_set: F06D065: error:0F06D065:common libcrypto routines:FIPS_mode_set:fips mode not supported Line 51: "[pop3s]": Failed to initialize SSL str_stats: 9 block(s), 163 data byte(s), 522 control byte(s) Any assistance would be greatly appreciated. -- Laura J. Fried

1 0

4.53 32-bit on Windows 2k8 R2 64bit
by Michael Curran 01 May '13

01 May '13

We are running stunnel and noticed an issue with what ended up being an issue creating a new thread due to running out of memory at 2gb - error (8) on create_client Are there any known issues with 4.53 around memory usage? We only terminate 2 ports against the installation 443 on 2 different interfaces / IP addresses and we ran into this issue with just under 5000 total connections We are not doing ECDH , but are using a 1024-bit param file

2 3

Problem with roundrobbin failover mode?
by Matt Wise 01 May '13

01 May '13

I've got dozens of clients connecting with Stunnel to a group of 5 servers. Each system has a config that looks like this: > cert = /etc/stunnel/zookeeper.pem > key = /etc/stunnel/zookeeper.key > CAfile = /etc/stunnel/zookeeper_ca.pem > verify = 2 > delay = yes > sslVersion = TLSv1 > client = yes > setuid = stunnel4 > setgid = stunnel4 > pid = /var/lib/stunnel4/zookeeper.stunnel4.pid > socket = l:TCP_NODELAY=1 > socket = r:TCP_NODELAY=1 > TIMEOUTconnect = 2 > session = 86400 > debug = 5 > [zookeeper] > accept = 127.0.0.1:2182 > failover = rr > connect = prod-zookeeper:2182 > connect = prod-zookeeper-1:2182 > connect = prod-zookeeper-2:2182 > connect = prod-zookeeper-3:2182 > connect = prod-zookeeper-4:2182 > connect = prod-zookeeper-5:2182 Essentially the first host is a load balancer, and the next 5 are the actual zookeeper hosts so that we can bypass the ELB if its giving us fits. Now what we're seeing is that almost every connection ends up on prod-zookeeper-5. Over and over and over again, our hosts pick the same system each time. We're running Stunnel 4.52: > Clients allowed=8000 > stunnel 4.52 on i486-pc-linux-gnu platform > Compiled/running with OpenSSL 0.9.8k 25 Mar 2009 > Threading:PTHREAD SSL:ENGINE Auth:LIBWRAP Sockets:POLL,IPv6 Any ideas what might be wrong here? Obviously we want the connections to be *roughly* random across the list of hosts... and if one of the hosts goes down, and the connection fails, we want the stunnel service to try again, and randomly pick a new host. It doesn't really seem to be doing that though. --Matt

3 8

help on Linux stunnel setup
by Valerio.FABRIZIO＠sungard.com 26 Apr '13

26 Apr '13

Hello all! I'm in charge of activating stunnel to connect a service to a remote service. Since I'm totally new on this product, I'd be grateful if someone could help me in configuring. This is where I stand: Stunnel version: stunnel 4.29 on x86_64-unknown-linux-gnu with OpenSSL 1.0.0-fips 29 Mar 2010 OS: Linux 2.6.32-220.23.1.el6.x86_64 #1 SMP Mon Jun 18 18:58:52 BST 2012 x86_64 x86_64 x86_64 GNU/Linux I'd need to have it started by non-root user, and I have loaded under a specific path (owned by the same user): Stunnel.conf: ; Sample stunnel configuration file ;cert = FXMS1.pem client = yes output = /export/home/bg_mtsbv/slev5fix/log pid = /export/home/bg_mtsbv/slev5fix/conf/stunnel.pid [ssl01] accept = 127.0.0.1:18889 connect = 193.203.229.143:443 Stunnel.pid (empty) xxx.pem (certificate has been provided by the owner of the target server) my first two questions: which is the correct command line to be launched? Is it correct to have all the files under the user's directory? Many thanks in advance for your help! Regards, Valerio

1 0

Inconsistent performance across stunnel and/or OpenSSL versions
by PPingPongBaker PPingPongBaker 23 Apr '13

23 Apr '13

Hi All, I am experimenting with stunnel inside a VM on Xenserver 6.02. So this may not be a "common" use case, nonetheless, I would like to point out the issue. It is a basic setup as follows with 3 VMs running "ab" for webclient, stunnel+haproxy combo as the https/http bridge and nginx as the webserver. client VM (ab) <-> stunnel + haproxy VM <-> webserver VM (nginx) Specs on the stunnel VM are 2GB RAM, single-core dedicated 2.5 GHz Xeon E5-2640 vCPU, running Debian Squeeze 2.6.32-5-amd64 (64 bit) kernel. All things unchanged such as stunnel/haproxy/nginx config and taking care of common gotchas such as file descriptor limit, TIMEOUTclose, disabling libwrap, etc. stunnel is built with pthreads. Also stunnel is configured to use a 2K RSA self-signed certificate, and the client is being forced to do TLS1. "ab" is invoked with "-c 4" so as to peg the stunnel VM CPU (any value beyond 4 doesn't seem to matter). nginx serves a tiny 32 byte static html file. With stunnel 4.29 and OpenSSL 0.9.8o, I get 300 requests per second as max throughput. With stunnel 4.56 and OpenSSL 1.0.1e, I get only 40 requests per second as max throughput. tcpdump tells me that the Server Hello sent to the client takes a longer time in the latter case. Tinkering with TCP_NODELAY doesn't change anything. Anyone else seeing this maybe even on physical hardware? Has anything changed in OpenSSL across those versions? Suggestions? Thanks.

4 10

Windows Failover Clustering Support
by Cynthia Haselton 22 Apr '13

22 Apr '13

All, A (hopefully) quick question: Is stunnel supported on Windows Failover Clusters...specifically as a clustered service or to encrypt connections to/from a clustered IP? Thanks in advance, CJH

2 4

Customizing encryption
by John 19 Apr '13

19 Apr '13

HI guys, I need to take off SSL and use another encryption, need some hints since i'm new to stunnel. Thanks in advance,John

1 0

limited number of ports
by Terren Suydam 09 Apr '13

09 Apr '13

Hi, There appears to be a limit to the number of services you can define. Services beyond the 64th service appear to get set up without any log warnings or errors, yet don't pass traffic. The code uses select() & FD_SET to accept() an incoming connection & in Windows (using Windows Server 2008) the default is 64 sockets for that so wondering if I can just recompile, setting FD_SETSIZE to something larger. I'll try it either way, just wanted to put it out there to see if anyone else has ever run into this. Thanks, Terren

4 10

Trying to Upgrade stunnel, but compile isn't working?
by Michael D. Setzer II 03 Apr '13

03 Apr '13

I have been using stunnel for a long time, but was just trying to compile the latest version from source, and it compiles, but doesn't work like the older version, so I must have some option wrong. With the current version on my Fedora 14 machine using the latest version it loads the stunnel ports and works, but the newer version does seem to load or give an error message. I've tested the stunnel from Fedora 16 and Fedora 17, and they work fine with the stunnel.conf to load the settings. Current version info from Fedora 14 system. stunnel 4.34 on x86_64-redhat-linux-gnu with OpenSSL 1.0.0e-fips 6 Sep 2011 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Global options debug = daemon.notice pid = /var/run/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /etc/stunnel/stunnel.pem ciphers = ALL:!aNULL:!eNULL:!SSLv2 curve = sect163r2 session = 300 seconds stack = 65536 bytes sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none The new build does this. stunnel 4.56 on x86_64-unknown-linux-gnu platform Compiled/running with OpenSSL 1.0.0e-fips 6 Sep 2011 Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS Global options: debug = daemon.notice pid = /usr/local/var/run/stunnel/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options: ciphers = FIPS (with "fips = yes") ciphers = ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH (with "fips = no") sessionCacheSize = 1000 sessionCacheTimeout = 300 seconds sslVersion = TLSv1 (with "fips = yes") sslVersion = TLSv1 for client, all for server (with "fips = no") stack = 65536 bytes TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none Have also tried it with --disable-fips With the new version I have to provide the /etc/stunnel/stunnel.conf, but it doesn't load any of the options. Sure it is just a simple configure setting I am missing. Thanks. +----------------------------------------------------------+ Michael D. Setzer II - Computer Science Instructor Guam Community College Computer Center mailto:[email protected] mailto:[email protected] http://www.guam.net/home/mikes Guam - Where America's Day Begins G4L Disk Imaging Project maintainer http://sourceforge.net/projects/g4l/ +----------------------------------------------------------+ http://setiathome.berkeley.edu (Original) Number of Seti Units Returned: 19,471 Processing time: 32 years, 290 days, 12 hours, 58 minutes (Total Hours: 287,489) BOINC@HOME CREDITS SETI 14305761.074364 | EINSTEIN 10610832.119852 ROSETTA 6726167.419674 | ABC 15903532.519753

2 2

Log Rotation on Windows
by Brian Wilkins 03 Apr '13

03 Apr '13

I know that log rotation on Windows is on the TO-DO list. Is there a way to rotate the log at startup using some other means or during use? I suppose I could start stunnel with a batch file and do the log rotation before starting. Is there any other way? Brian

1 0

32/64 bit interposition on Solaris
by Norm Jacobs 29 Mar '13

29 Mar '13

I was recently working with stunnel on Solaris and ran across the following code in client.c: putenv("LD_PRELOAD=" LIBDIR "/libstunnel.so"); This appears to have been put in place to interpose a stunnel version of getpeername() on the downstream application. This works great when libstunnel.so has the same bittedness as the downstream application, but Solaris allows users to install and run both 32 and 64 bit applications on the same system. If the stunnel exectuable is a 32 bit application and the downstream application is a 64 bit application, the runtime linker falls over because of the mismatch with the interposed library. To avoid this problem, stunnel should use LD_PRELOAD_32 and LD_PRELOAD_64 on Solaris. I have put together a patch to client.c that sets both LD_PRELOAD_* environment variables to something that seems to make sense on Solaris, but have used a fairly hacky way of enabling it when I build. The client.c changes that I put together are: # On Solaris, fix stunnel so that the linker know where both the 32 and 64 bit # interposer libraries are. If you use LD_PRELOAD with the wrong bittedness # of interposer, the runtime linker hits a fatal error in trying to load # mismatched ELF objects. # diff -r -u stunnel-4.55.orig/src/client.c stunnel-4.55/src/client.c --- stunnel-4.55.orig/src/client.c 2013-02-28 00:17:58.000000000 -0800 +++ stunnel-4.55/src/client.c 2013-03-21 22:55:21.098479331 -0700 @@ -1096,9 +1096,14 @@ /* just don't set these variables if getnameinfo() fails */ putenv(str_printf("REMOTE_HOST=%s", host)); if(c->opt->option.transparent_src) { - putenv("LD_PRELOAD=" LIBDIR "/libstunnel.so"); - /* for Tru64 _RLD_LIST is used instead */ +#ifdef MACH64 + putenv("LD_PRELOAD_32=" LIBDIR "/libstunnel.so"); + putenv("LD_PRELOAD_64=" LIBDIR "/" MACH64 "/libstunnel.so"); +#elif __osf /* for Tru64 _RLD_LIST is used instead */ putenv("_RLD_LIST=" LIBDIR "/libstunnel.so:DEFAULT"); +#else + putenv("LD_PRELOAD=" LIBDIR "/libstunnel.so"); +#endif } } This adds more appropriate environment variables into the calling environment on Solaris. It still needs some work to integrate better with the build. Anyway, I thought that I would raise the issue and at least offer a direction to work from. I am happy to work with someone on a better resolution to this. -Norm

1 0

use of CRYPTO_NUM_LOCKS
by Norm Jacobs 29 Mar '13

29 Mar '13

A while ago, the Solaris security group noticed that stunnel uses CRYPTO_NUM_LOCKS to size a lock table in the code at compile time. They noted that there is function CRYPTO_num_locks() that can do the same thing at runtime and have requested that the function be used so that FIPS/non-FIPS support can be switched on by users simply using interposition. As a result of this, I put together this patch that switches to code to use the function instead of macro. -Norm # stunnel should use CRYPTO_num_locks() function instead of CRYPTO_NUM_LOCKS # macro. The function interogates libcrypto at run-time for sizing and the # macro at compile time. If you interpose a a version at runtime to switch # between FIPS/non-FIPS support, the lock table may not be sized correctly. # diff -r -u stunnel-4.55.orig/src/sthreads.c stunnel-4.55/src/sthreads.c --- stunnel-4.55.orig/src/sthreads.c 2012-08-09 14:44:18.000000000 -0700 +++ stunnel-4.55/src/sthreads.c 2013-03-21 23:29:34.912001586 -0700 @@ -212,7 +212,7 @@ #ifdef USE_PTHREAD static pthread_mutex_t stunnel_cs[CRIT_SECTIONS]; -static pthread_mutex_t lock_cs[CRYPTO_NUM_LOCKS]; +static pthread_mutex_t *lock_cs; void enter_critical_section(SECTION_CODE i) { pthread_mutex_lock(stunnel_cs+i); @@ -275,13 +275,15 @@ int sthreads_init(void) { int i; + int num_locks = CRYPTO_num_locks(); /* initialize stunnel critical sections */ for(i=0; i<CRIT_SECTIONS; i++) pthread_mutex_init(stunnel_cs+i, NULL); /* initialize OpenSSL locking callback */ - for(i=0; i<CRYPTO_NUM_LOCKS; i++) + lock_cs = calloc(num_locks, sizeof (*lock_cs)); + for(i=0; i<num_locks; i++) pthread_mutex_init(lock_cs+i, NULL); CRYPTO_set_id_callback(stunnel_thread_id); CRYPTO_set_locking_callback(locking_callback);

1 0

SSL VPN configuration confusion
by TJ 28 Mar '13

28 Mar '13

I'm using stunnel v4.56 on Linux (Ubuntu) and trying to configure a routed tunnel in conjunction with pppd. I could do with some help to figure it out - my biggest problem is not knowing what a good connection configuration or log looks like. I've read lots of (old) patchy articles on how it is done but the instructions are either hopelessly out of date, or plain wrong. During extensive trial and error I found what appeared to be bugs in the Ubuntu distro-packaged v4.42 but as I don't yet know what a successful connection log looks like they may have been red herrings. The main issue I was trying to build out of was (on the server): SSL accepted: new session negotiated Negotiated ciphers: ECDHE-RSA-RC4-SHA SSLv3 Kx=ECDH Au=RSA Enc=RC4(128) Mac=SHA1 TTY=/dev/pts/4 allocated Local mode child started (PID=17247) Remote FD=1 initialized TCP_NODELAY: Socket operation on non-socket (88) Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket linger (remote): Socket operation on non-socket (88) Service vpn finished (0 left) At this point there would be no pppX interfaces. I created an up-to-date Debian/Ubuntu package for v4.56 which has been more successful. Both ends of the link have the same x86 (i386) package installed. On the server again: stunnel: LOG6[23986:3073268544]: SSL accepted: new session negotiated stunnel: LOG6[23986:3073268544]: Negotiated TLSv1/SSLv3 ciphersuite: ECDHE-RSA-RC4-SHA (128-bit encryption) stunnel: LOG6[23986:3073268544]: Compression: null, expansion: null stunnel: LOG7[23986:3073268544]: TTY=/dev/pts/5 allocated stunnel: LOG6[23986:3073268544]: Local mode child started (PID=23989) stunnel: LOG7[23986:3073268544]: Remote socket (FD=14) initialized stunnel: LOG3[23986:3073268544]: TCP_NODELAY: Socket operation on non-socket (88) stunnel: LOG4[23986:3073268544]: Failed to set remote socket options pppd[23989]: pppd options in effect: pppd[23989]: debug^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: updetach^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: linkname pella^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: ktune^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: unit 3^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: dump^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: nomp^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: noauth^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: ^I^I# (from /etc/ppp/options) pppd[23989]: notty^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: crtscts^I^I# (from /etc/ppp/options) pppd[23989]: local^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: noaccomp^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: asyncmap 0^I^I# (from /etc/ppp/options) pppd[23989]: nopcomp^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: silent^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: lcp-echo-failure 4^I^I# (from /etc/ppp/options) pppd[23989]: lcp-echo-interval 30^I^I# (from /etc/ppp/options) pppd[23989]: hide-password^I^I# (from /etc/ppp/options) pppd[23989]: novj^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: noipdefault^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: noccp^I^I# (from /etc/ppp/peers/pella-vpn) pppd[23989]: noipx^I^I# (from /etc/ppp/options) pppd[23989]: pppd 2.4.5 started by root, uid 0 pppd[23989]: using channel 19 udevd[2122]: device 0xb7b0a6e8 has devpath '/devices/virtual/net/ppp3' udevd[2122]: created empty file '/run/udev/data/n27' for '/devices/virtual/net/ppp3' pppd[23989]: Using interface ppp3 pppd[23989]: Connect: ppp3 <--> /dev/pts/6 Both ends of the link have ppp interfaces but neither have IP addresses. The server configuration is: ----- /etc/stunnel/pella-vpn.conf ----- CAfile = /etc/stunnel/vpn.pem cert = /etc/stunnel/vpn.pem key = /etc/stunnel/vpn.pem output = /var/log/stunnel-vpn.log #verify = 2 debug = 7 client = no foreground = no [vpn] accept = 109.74.x.y:9876 exec = /usr/sbin/pppd execargs = pppd call pella-vpn 10.254.241.1:10.254.241.2 pty = yes ---------- ----- /etc/ppp/peers/pella-vpn ----- unit 3 notty ktune local noipdefault noccp noauth novj nomp nopcomp noaccomp silent updetach linkname pella debug dump ---------- # ifconfig ppp3 ppp3 Link encap:Point-to-Point Protocol POINTOPOINT NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) The client configuration is: ---- /etc/network/interfaces ----- # SSL VPN to Pella iface ppp3 inet ppp unit 3 provider pella-vpn pre-up /sbin/ifconfig ppp0 up ---------- ----- /etc/ppp/peers/pella-vpn ----- # ensure we use ppp3 (ppp0-2 are already in use) unit 3 ktune local noipdefault noccp noauth novj nomp nopcomp noaccomp silent updetach logfd 2 linkname pella pty "/usr/bin/stunnel4 /etc/stunnel/pella.conf.vpn" user "tj" # debugging debug dump ---------- ----- /etc/stunnel/pella.conf.vpn ----- pid = /var/run/stunnel4/pella.pid debug = debug output = /var/log/stunnel-pella.log foreground = no client=yes connect = 109.74.x.y:9876 CAfile = /etc/stunnel/vpn.pem # verify the peer's certificate verify = 2 ---------- # ifup ppp3 pppd options in effect: debug # (from /etc/ppp/peers/pella-vpn) updetach # (from command line) logfd 2 # (from /etc/ppp/peers/pella-vpn) linkname pella # (from /etc/ppp/peers/pella-vpn) ktune # (from /etc/ppp/peers/pella-vpn) unit 3 # (from command line) dump # (from /etc/ppp/peers/pella-vpn) nomp # (from /etc/ppp/peers/pella-vpn) noauth # (from /etc/ppp/peers/pella-vpn) user tj # (from /etc/ppp/peers/pella-vpn) # (from /etc/ppp/options) pty /usr/bin/stunnel4 /etc/stunnel/pella.conf.vpn # (from /etc/ppp/peers/pella-vpn) crtscts # (from /etc/ppp/options) local # (from /etc/ppp/peers/pella-vpn) noaccomp # (from /etc/ppp/peers/pella-vpn) asyncmap 0 # (from /etc/ppp/options) nopcomp # (from /etc/ppp/peers/pella-vpn) silent # (from /etc/ppp/peers/pella-vpn) lcp-echo-failure 4 # (from /etc/ppp/options) lcp-echo-interval 30 # (from /etc/ppp/options) hide-password # (from /etc/ppp/options) novj # (from /etc/ppp/peers/pella-vpn) noipdefault # (from /etc/ppp/peers/pella-vpn) noccp # (from /etc/ppp/peers/pella-vpn) noipx # (from /etc/ppp/options) using channel 43 Using interface ppp3 Connect: ppp3 <--> /dev/pts/5 # ifconfig ppp3 ppp3 Link encap:Point-to-Point Protocol POINTOPOINT NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) # netstat -natp | grep stun tcp 0 0 82.71.a.b:34437 109.74.x.y:9876 ESTABLISHED 24105/stunnel4

1 2

Fw: High memory usage problem.
by mkanet＠yahoo.com 27 Mar '13

27 Mar '13

Jeremy, I know there's an android build of stunnel. Im not trying to be funny, but are you running stunnel on your mobile phone? :) The latest android mobile phones include quadcore CPU's with 2GB's of RAM It would be interesting to see how much of a load a mobile phone can handle with a USB to RJ45 Ethernet interface. Edit: I tried sending this earlier, but it doesn't look like it went through. My apologies in case this is a duplicate. ------------------------ Thanks for taking the time to read this. We're operating on a low spec system that can not be modified at this point. stunnel was introduced at the last minute, without consideration to resource requirements and now consumes enough ram to cause the kernel to issue OOM exceptions. So in short, we are trying to trade increased CPU usage for less memory usage and have tried setting “sessions” to 3600 to reduce memory pressure, but unfortunately it doesn't last. Our current solution is to cron a restart of stunnel on a regular basis, but would prefer to limit number of threads or number of cache entries or something else altogether similarly gentler. Thanks again for your consideration and assistance in this! If there's any specific information I can give, please let me know. Regards, Jeremy

3 7

environment/user variable
by Sebastian Rose-Indorf 26 Mar '13

26 Mar '13

Hello, Stunnel is a very helpful tool. But I miss the support of a environment/user variable to reference the configuration file or the folder of the configuration file: such as %GNUPGHOME% in GnuPG or %OPENSSL_CONF% in OpenSSL. Sebastian

1 0

the range of stunnel functionality
by John A. Wallace 26 Mar '13

26 Mar '13

Where can I find more information about the use and functionality of "tstunnel.exe"? Maybe I am going quite blind, but I looked around unsuccessfully. Thanks. John A. Wallace The pen is mightier than the sword, but only if you get in the first stroke.

3 3

stunnel 4.56 released
by Michal Trojnara 23 Mar '13

23 Mar '13

Dear Users, I have released version 4.56 of stunnel. The ChangeLog entry: Version 4.56, 2013.03.22, urgency: HIGH: * New features - Win32 installer automatically configures firewall exceptions. - Win32 installer configures administrative shortcuts to invoke UAC. - Improved Win32 GUI shutdown time. * Bugfixes - Fixed a regression bug introduced in version 4.55 causing random crashes on several platforms, including Windows 7. - Fixed startup crashes on some Win32 systems. - Fixed incorrect "stunnel -exit" process synchronisation. - Fixed FIPS detection with new versions of the OpenSSL library. - Failure to open the log file at startup is no longer ignored. Home page: https://www.stunnel.org/ Download: https://www.stunnel.org/downloads.html SHA-256 hash for stunnel-4.56.tar.gz: 9cae2cfbe26d87443398ce50d7d5db54e5ea363889d5d2ec8d2778a01c871293 Best regards, Mike

2 2

4.56 FIPS startup issue
by Ian Donaldson 23 Mar '13

23 Mar '13

Hi, I've been using stunnel for years and tried to upgrade to 4.56 today and it fails to start with this error: Clients allowed=125 stunnel 4.56 on i386-pc-solaris2.9 platform Compiled/running with OpenSSL 1.0.1e 11 Feb 2013 Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS Reading configuration from file /opt/local/etc/stunnel.conf FIPS_mode_set: F06D065: error:0F06D065:common libcrypto routines:FIPS_mode_set:fips mode not supported Line 36: "[pop3s]": Failed to initialize SSL str_stats: 5 block(s), 118 data byte(s), 210 control byte(s) I note some mention of FIPS in today's release. 4.55 started ok though with the same version of openssl (and crashed a few hours later), so we're back to 4.54 again. Ian D

1 1

stunnel craches in windows 7 x64
by Mosy Mosy 15 Mar '13

15 Mar '13

I have been facing with a strange bug in stunnel 4.55 (and also in tstunnel) in Windows 7 x64 and also in Windows Server 2003 R2 x86. I redirect TCP connections from a win7 client to a win2k3 server. Stunnel works fine when accepting connections and transferring data. But suddenly crashes when the client program (in the client side) closes the connection (maybe the several connections simultaneously). It happens on the server side too. Because of this problem I have to load a little program to relaunch stunnel whenever it is crashed. What I mean by 'crash' is that the windows shows the "stunnel stops working" and giving the choices to restart,stop, or debug the program. If you need more details I will be pleased to help you in this case. Thank you :) PS: I just have downloaded "stunnel-4.56b1" and I'm using it right now. I see no sign of crashing and instability until this moment :) it seems the bug is eliminated :)

1 0

4.55 is unstable
by Death Master 14 Mar '13

14 Mar '13

Windows build of 4.55, 2013.03.03 crashes every 20-60sec under load. OS:Win7 x64 (with all updates) This bug affects both stunnel and tstunnel. Please fix it soon ;)

5 6

stunnel: SSL routinesdecryption failed or bad record mac
by Kishore Paul 13 Mar '13

13 Mar '13

Hello Everyone, I updated to the latest version of stunnel and openssl and am still getting a lot of decryption fails. stunnel: SSL routines:SSL3_GET_RECORD:decryption failed or bad record mac and a few times it just segfaults: [937987.314573] stunnel: segfault at 7f6164025000 ip 00007f616d8b5adc sp 00007f616e6a9af0 error 4 in libcrypto.so.1.0.0[7f616d84a000+19f000] stunnel 4.54 on x86_64-unknown-linux-gnu platform Compiled with OpenSSL 1.0.1e 11 Feb 2013 Running with OpenSSL 1.0.1 14 Mar 2012 Is there any way to avoid these errors? I limited my cipher set to just RC4-SHA after seeing that there is an issue even in openssl 1.01e-1 for e_aes_cbc_hmac_sha1.c http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=678353 Appreciate your help. Thanks, Kishore

1 0

Need help to configure STUNNEL using proxy socks v5 to send file to a server
by laurent.uk＠bnpparibas.com 11 Mar '13

11 Mar '13

Hi everyone, I need to connect to proxy socks V5 in order to send file in my server. I configure my stunnel like this : sslVersion = SSLv3 client=yes cert = /opt/freeware/etc/stunnel/ca_nopass.pem pid = /var/adm/stunnel_test.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 output = /logs/stunnel/stunnel.log ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ protocol = connect protocolAuthentication = basic protocolHost = ***:8080 [pesit] accept = 12099 connect = ***:433 But it doesn't works! The log from my stunnel client : 2013.03.11 18:57:30 LOG5[26673178:260]: Service pesit accepted connection from ***:48549 2013.03.11 18:57:30 LOG7[26673178:260]: remote socket: FD=1 allocated (non-blocking mode) 2013.03.11 18:57:30 LOG6[26673178:260]: connect_blocking: connecting ::1:10443 2013.03.11 18:57:30 LOG3[26673178:260]: connect_blocking: connect ::1:10443: Connection refused (79) 2013.03.11 18:57:30 LOG7[26673178:260]: remote socket: FD=1 allocated (non-blocking mode) 2013.03.11 18:57:30 LOG6[26673178:260]: connect_blocking: connecting ****:10443 2013.03.11 18:57:30 LOG5[26673178:260]: connect_blocking: connected ****:10443 2013.03.11 18:57:30 LOG5[26673178:260]: Service pesit connected remote server from ****:48551 2013.03.11 18:57:30 LOG7[26673178:260]: Remote FD=1 initialized 2013.03.11 18:57:30 LOG7[26673178:260]: Option TCP_NODELAY set on remote socket 2013.03.11 18:57:30 LOG6[26673178:260]: Client-mode connect protocol negotiations started 2013.03.11 18:57:30 LOG7[26673178:260]: -> CONNECT ****:1080 HTTP/1.1 2013.03.11 18:57:30 LOG7[26673178:260]: -> Host: ****:1080 2013.03.11 18:57:30 LOG7[26673178:260]: -> 2013.03.11 18:57:30 LOG3[26673178:260]: fdgetline: readsocket: Connection reset by peer (73) 2013.03.11 18:57:30 LOG5[26673178:260]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2013.03.11 18:57:30 LOG7[26673178:260]: Service pesit finished (0 left) 2013.03.11 18:57:30 LOG7[26673178:260]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) 2013.03.11 18:57:32 LOG7[26673178:1]: local socket: FD=0 allocated (non-blocking mode) In my stunnel server, i have the following message : "SSL_accept: 1407609B: error:1407609B:SSL routines:SSL23_GET_CLIENT_HELLO:https proxy request" 2013.03.11 18:57:30 LOG7[27525210:1]: Service pesitip accepted FD=0 from ****:48551 2013.03.11 18:57:30 LOG7[27525210:265]: Service pesitip started 2013.03.11 18:57:30 LOG7[27525210:265]: Option TCP_NODELAY set on local socket 2013.03.11 18:57:30 LOG5[27525210:265]: Service pesitip accepted connection from 159.50.49.69:48551 2013.03.11 18:57:30 LOG3[27525210:265]: SSL_accept: 1407609B: error:1407609B:SSL routines:SSL23_GET_CLIENT_HELLO:https proxy request 2013.03.11 18:57:30 LOG5[27525210:265]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2013.03.11 18:57:30 LOG7[27525210:265]: Service pesitip finished (0 left) 2013.03.11 18:57:30 LOG7[27525210:265]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) 2013.03.11 18:57:32 LOG7[27525210:1]: local socket: FD=0 allocated (non-blocking mode) Can you help me to configure my stunnel please? Thanks. Regards, Laurent UK This message and any attachments (the "message") is intended solely for the intended addressees and is confidential. If you receive this message in error,or are not the intended recipient(s), please delete it and any copies from your systems and immediately notify the sender. Any unauthorized view, use that does not comply with its purpose, dissemination or disclosure, either whole or partial, is prohibited. Since the internet cannot guarantee the integrity of this message which may not be reliable, BNP PARIBAS (and its subsidiaries) shall not be liable for the message if modified, changed or falsified. Do not print this message unless it is necessary,consider the environment. ---------------------------------------------------------------------------------------------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur ou s'il ne vous est pas destine, merci de le detruire ainsi que toute copie de votre systeme et d'en avertir immediatement l'expediteur. Toute lecture non autorisee, toute utilisation de ce message qui n'est pas conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite. L'Internet ne permettant pas d'assurer l'integrite de ce message electronique susceptible d'alteration, BNP Paribas (et ses filiales) decline(nt) toute responsabilite au titre de ce message dans l'hypothese ou il aurait ete modifie, deforme ou falsifie. N'imprimez ce message que si necessaire, pensez a l'environnement.

1 0

Mutual Authentication
by Sameer Rahmani 11 Mar '13

11 Mar '13

Hi guys, I want to have secure tunnel to my server and also i want only specified clients can connect via the tunnel to the server. I was reading about mutual authentication but i can't run stunnel using verify=2 or 3 or 4. I confused. Can you please explain for me what should i do to use 2way ssl connection? how does stunnel use this?

2 1

It doesn't work.
by Raemsh Pungavanam 11 Mar '13

11 Mar '13

Hi , i have following issue with latest version of stunnel and openssl. version ====== stunnel - 4.55 openssl - 1.0.1e stunnel.conf ========== # Sample stunnel configuration file # Copyright by Michal Trojnara 2002 # Comment it out on Win32 #cert = /etc/tr69/stunnel.pem key = /etc/tr69/stunnel.pem # chroot = /usr/local/var/run/stunnel/ # PID is created inside chroot jail pid = /var/run/ssl.pid setuid = root setgid = root # Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = TLSv1.2 # Workaround for Eudora bug #options = DONT_INSERT_EMPTY_FRAGMENTS # Authentication stuff verify = 1 # don't forget about c_rehash CApath # it is located inside chroot jail: #CApath = /certs # or simply use CAfile instead: #CAfile = /usr/local/etc/stunnel/certs.pem #CAfile = /etc/tr69/ca.crt # CRL path or file (inside chroot jail): #CRLpath = /crls # or simply use CAfile instead: #CRLfile = /usr/local/etc/stunnel/crls.pem # Some debugging stuff debug = 7 output = /var/log/ssl.log foreground = yes # Use it for client mode client = yes # Service-level configuration [https] CAfile = /flash/Cert.pem accept = 127.0.0.1:8001 connect = acs.qacafe.com:80 #accept = 8080 cat /var/log/ssl.log ============== 2013.03.11 18:29:04 LOG5[5849:0]: stunnel 4.55 on mips-openwrt-linux-uclibc platform 2013.03.11 18:29:04 LOG5[5849:0]: Compiled/running with OpenSSL 1.0.1e 11 Feb 2013 2013.03.11 18:29:04 LOG5[5849:0]: Threading:FORK SSL:+ENGINE+OCSP Auth:none Sockets:POLL+IPv6 2013.03.11 18:29:04 LOG5[5849:0]: Reading configuration from file /etc/tr69/stunnel.conf 2013.03.11 18:29:04 LOG7[5849:0]: Compression not enabled 2013.03.11 18:29:04 LOG7[5849:0]: PRNG seeded successfully 2013.03.11 18:29:04 LOG6[5849:0]: Initializing service [https] 2013.03.11 18:29:04 LOG4[5849:0]: Insecure file permissions on /etc/tr69/stunnel.pem 2013.03.11 18:29:04 LOG7[5849:0]: Loaded verify certificates from /flash/Cert.pem 2013.03.11 18:29:04 LOG7[5849:0]: Loaded /flash/Cert.pem revocation lookup file 2013.03.11 18:29:04 LOG7[5849:0]: SSL options set: 0x00000004 2013.03.11 18:29:04 LOG5[5849:0]: Configuration successful 2013.03.11 18:29:04 LOG7[5849:0]: Service [https] (FD=17) bound to 127.0.0.1:8001 2013.03.11 18:29:04 LOG7[5849:0]: Created pid file /var/run/ssl.pid 2013.03.11 18:29:21 LOG7[5849:0]: Service [https] accepted (FD=4) from 127.0.0.1:36039 2013.03.11 18:29:21 LOG7[5920:0]: Service [https] started 2013.03.11 18:29:21 LOG5[5920:0]: Service [https] accepted connection from 127.0.0.1:36039 2013.03.11 18:29:22 LOG6[5920:0]: connect_blocking: connecting 6.0.0.1:80 2013.03.11 18:29:22 LOG7[5920:0]: connect_blocking: s_poll_wait 6.0.0.1:80: waiting 10 seconds 2013.03.11 18:29:22 LOG5[5920:0]: connect_blocking: connected 6.0.0.1:80 2013.03.11 18:29:22 LOG5[5920:0]: Service [https] connected remote server from 61.200.100.100:35694 2013.03.11 18:29:22 LOG7[5920:0]: Remote socket (FD=17) initialized 2013.03.11 18:29:22 LOG7[5920:0]: SNI: sending servername: acs.qacafe.com 2013.03.11 18:29:22 LOG7[5920:0]: SSL state (connect): before/connect initialization 2013.03.11 18:29:22 LOG7[5920:0]: SSL state (connect): SSLv3 write client hello A 2013.03.11 18:30:15 LOG7[5849:0]: Service [https] accepted (FD=4) from 127.0.0.1:36042 2013.03.11 18:30:15 LOG7[5973:0]: Service [https] started 2013.03.11 18:30:15 LOG5[5973:0]: Service [https] accepted connection from 127.0.0.1:36042 2013.03.11 18:30:15 LOG6[5973:0]: connect_blocking: connecting 6.0.0.1:80 2013.03.11 18:30:15 LOG7[5973:0]: connect_blocking: s_poll_wait 6.0.0.1:80: waiting 10 seconds 2013.03.11 18:30:15 LOG5[5973:0]: connect_blocking: connected 6.0.0.1:80 2013.03.11 18:30:15 LOG5[5973:0]: Service [https] connected remote server from 61.200.100.100:35697 2013.03.11 18:30:15 LOG7[5973:0]: Remote socket (FD=17) initialized 2013.03.11 18:30:15 LOG7[5973:0]: SNI: sending servername: acs.qacafe.com 2013.03.11 18:30:15 LOG7[5973:0]: SSL state (connect): before/connect initialization 2013.03.11 18:30:15 LOG7[5973:0]: SSL state (connect): SSLv3 write client hello A 2013.03.11 18:31:40 LOG7[5849:0]: Service [https] accepted (FD=4) from 127.0.0.1:49029 2013.03.11 18:31:40 LOG7[6023:0]: Service [https] started 2013.03.11 18:31:40 LOG5[6023:0]: Service [https] accepted connection from 127.0.0.1:49029 2013.03.11 18:31:40 LOG6[6023:0]: connect_blocking: connecting 6.0.0.1:80 2013.03.11 18:31:40 LOG7[6023:0]: connect_blocking: s_poll_wait 6.0.0.1:80: waiting 10 seconds 2013.03.11 18:31:40 LOG5[6023:0]: connect_blocking: connected 6.0.0.1:80 2013.03.11 18:31:40 LOG5[6023:0]: Service [https] connected remote server from 61.200.100.100:40051 2013.03.11 18:31:40 LOG7[6023:0]: Remote socket (FD=17) initialized 2013.03.11 18:31:40 LOG7[6023:0]: SNI: sending servername: acs.qacafe.com 2013.03.11 18:31:40 LOG7[6023:0]: SSL state (connect): before/connect initialization 2013.03.11 18:31:40 LOG7[6023:0]: SSL state (connect): SSLv3 write client hello A 2013.03.11 18:33:45 LOG7[5849:0]: Service [https] accepted (FD=4) from 127.0.0.1:49032 2013.03.11 18:33:45 LOG7[6074:0]: Service [https] started 2013.03.11 18:33:45 LOG5[6074:0]: Service [https] accepted connection from 127.0.0.1:49032 2013.03.11 18:33:45 LOG6[6074:0]: connect_blocking: connecting 6.0.0.1:80 2013.03.11 18:33:45 LOG7[6074:0]: connect_blocking: s_poll_wait 6.0.0.1:80: waiting 10 seconds 2013.03.11 18:33:45 LOG5[6074:0]: connect_blocking: connected 6.0.0.1:80 2013.03.11 18:33:45 LOG5[6074:0]: Service [https] connected remote server from 61.200.100.100:40054 2013.03.11 18:33:45 LOG7[6074:0]: Remote socket (FD=17) initialized 2013.03.11 18:33:45 LOG7[6074:0]: SNI: sending servername: acs.qacafe.com 2013.03.11 18:33:45 LOG7[6074:0]: SSL state (connect): before/connect initialization 2013.03.11 18:33:45 LOG7[6074:0]: SSL state (connect): SSLv3 write client hello A 2013.03.11 18:34:22 LOG6[5920:0]: init_ssl: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2013.03.11 18:34:22 LOG5[5920:0]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.03.11 18:34:22 LOG7[5920:0]: Remote socket (FD=17) closed 2013.03.11 18:34:22 LOG7[5920:0]: Local socket (FD=4) closed 2013.03.11 18:34:22 LOG7[5920:0]: Service [https] finished 2013.03.11 18:34:22 LOG7[5920:0]: str_stats: 19 block(s), 877 data byte(s), 798 control byte(s) 2013.03.11 18:34:22 LOG7[5849:0]: Dispatching signals from the signal pipe 2013.03.11 18:34:22 LOG7[5849:0]: Processing SIGCHLD 2013.03.11 18:34:22 LOG7[5849:0]: Process 5920 finished with code 0 2013.03.11 18:34:22 LOG7[5849:0]: Signal pipe is empty 2013.03.11 18:35:15 LOG6[5973:0]: init_ssl: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2013.03.11 18:35:15 LOG5[5973:0]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.03.11 18:35:15 LOG7[5973:0]: Remote socket (FD=17) closed 2013.03.11 18:35:15 LOG7[5973:0]: Local socket (FD=4) closed 2013.03.11 18:35:15 LOG7[5973:0]: Service [https] finished 2013.03.11 18:35:15 LOG7[5973:0]: str_stats: 19 block(s), 877 data byte(s), 798 control byte(s) 2013.03.11 18:35:15 LOG7[5849:0]: Dispatching signals from the signal pipe 2013.03.11 18:35:15 LOG7[5849:0]: Processing SIGCHLD 2013.03.11 18:35:15 LOG7[5849:0]: Process 5973 finished with code 0 2013.03.11 18:35:15 LOG7[5849:0]: Signal pipe is empty 2013.03.11 18:36:40 LOG6[6023:0]: init_ssl: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2013.03.11 18:36:40 LOG5[6023:0]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.03.11 18:36:40 LOG7[6023:0]: Remote socket (FD=17) closed 2013.03.11 18:36:40 LOG7[6023:0]: Local socket (FD=4) closed 2013.03.11 18:36:40 LOG7[6023:0]: Service [https] finished 2013.03.11 18:36:40 LOG7[6023:0]: str_stats: 19 block(s), 877 data byte(s), 798 control byte(s) 2013.03.11 18:36:40 LOG7[5849:0]: Dispatching signals from the signal pipe 2013.03.11 18:36:40 LOG7[5849:0]: Processing SIGCHLD 2013.03.11 18:36:40 LOG7[5849:0]: Process 6023 finished with code 0 2013.03.11 18:36:40 LOG7[5849:0]: Signal pipe is empty 2013.03.11 18:38:45 LOG6[6074:0]: init_ssl: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2013.03.11 18:38:45 LOG5[6074:0]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.03.11 18:38:45 LOG7[6074:0]: Remote socket (FD=17) closed 2013.03.11 18:38:45 LOG7[6074:0]: Local socket (FD=4) closed 2013.03.11 18:38:45 LOG7[6074:0]: Service [https] finished 2013.03.11 18:38:45 LOG7[6074:0]: str_stats: 19 block(s), 877 data byte(s), 798 control byte(s) 2013.03.11 18:38:45 LOG7[5849:0]: Dispatching signals from the signal pipe 2013.03.11 18:38:45 LOG7[5849:0]: Processing SIGCHLD 2013.03.11 18:38:45 LOG7[5849:0]: Process 6074 finished with code 0 2013.03.11 18:38:45 LOG7[5849:0]: Signal pipe is empty Normally under which circumstances this can happen. please help me totally clue less ... Rgds, Ramesh P

1 0

Stunnel SMP enabled?
by Michael Curran 06 Mar '13

06 Mar '13

I am running an Ubuntu system with Stunnel for 443 connections to an application on the back end. Essentially acting as a load balancer. When I look at the processor stats per processor (this is a 6-cpu system) I see cpu0 with almost 4% usage , compared to the other 5 processors hiting maybe .5% usage across the board. Is stunnel SMP enabled and passes processing amongst all 6 Procs? Or does it bind to one Proc and as long as its active it does all its work on just one PROC. We are having a lot of dropped connections when the overall system CPU hits about 23-25% .. which seems to me that it could be pushing just one CPU hard and the other 5 become basically idle. I am setting up to capture some SAR data to help confirm this effort, but it would if I knew that stunnel was setup for SMP processing.

1 0

Re: [stunnel-users] Stunnel as an "HTTPS to HTTPS" proxy
by Javier 05 Mar '13

05 Mar '13

On Tue, 05 Mar 2013 09:04:41 +0200 "jmwb(a)webmail.co.za" <jmwb(a)webmail.co.za> wrote: > Thank you for your response Javier. > > I now understand how to phrase what I am looking for. What I am looking for is > effectively an SSL Man-in-The-Middle (but please be assured that I am not > looking to build malware). However, I am still not certain from your response > that Stunnel can do this. Can the client-side handle SSL or does it only > support clear-text on the client side? > > jmwb Hi, in the example I gave to you is like this. Hope this can help you to understand how stunnel works in such scenario. 1. Web browser without SSL support. 2. It sends clear text to the IP:port where stunnel client is listening. 3. Stunnel in the client machine send ciphered text to the machine with Stunnel acting as server. 4. Stunnel in the server machine sends clear text to the web server. 5. The web server hasn't SSL support. 6. The communication is reversed to reply to the client side. With a diagram. Browser <> clear text <> stunnel<> ciphered <> stunnel <> clear text <> web server Of course, it is possible to make a MiTM attack between browser and stunnel and stunnel and web server at both sides, but not in between. To accomplish such attack you'll first need to access one of the machines and find such scenario. If both sides support SSL you don't need stunnel (unless one of the sides doesn't support SSL) and, therefore, all communications are ciphered P2P. No clear text. Except keyboard/mouse loggers in the client side. As said, is a secure tunnel, an SSL proxy. As you wish. Regards.

1 0

Re: [stunnel-users] Disable SNI in stunnel win32 version
by Lilienberg, Daniel () 05 Mar '13

05 Mar '13

I want to use my Apache as a secure proxy (where Stunnel adds the SSL layer). With SNI enabled, I must send all hosts I want to connect to which is impossible ? This is for internet proxy usage, so all sites on Internet must be available through the proxy. It worked fine before SNI. From: Brian Wilkins [mailto:[email protected]] Sent: den 5 mars 2013 14:14 To: Lilienberg, Daniel () Subject: Re: [stunnel-users] Disable SNI in stunnel win32 version Does this help? http://langui.sh/2009/11/03/ssl-vhosting-on-the-same-ip-aka-sni/ On Tue, Mar 5, 2013 at 8:10 AM, Lilienberg, Daniel () <daniel.lilienberg(a)volvocars.com<mailto:[email protected]>> wrote: Hi, In my local vmware setup im using Apache with mod_ssl on the server side and Stunnel on client side to make a secure proxy. Im using Chrome as webbrowser to connect locally to the apache which bounces me to internet. In my setup everything worked with the older Stunnel 4.3x, but when you upgraded to a newer Openssl it enabled SNI and now its broken. Can I disable SNI in any way or so I need to recompile stunnel with an older OpenSSL package ? Im running on Win32. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org<mailto:[email protected]> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

1 0

Disable SNI in stunnel win32 version
by Lilienberg, Daniel () 05 Mar '13

05 Mar '13

Hi, In my local vmware setup im using Apache with mod_ssl on the server side and Stunnel on client side to make a secure proxy. Im using Chrome as webbrowser to connect locally to the apache which bounces me to internet. In my setup everything worked with the older Stunnel 4.3x, but when you upgraded to a newer Openssl it enabled SNI and now its broken. Can I disable SNI in any way or so I need to recompile stunnel with an older OpenSSL package ? Im running on Win32.

1 0

Stunnel as an "HTTPS to HTTPS" proxy
by jmwb＠webmail.co.za 04 Mar '13

04 Mar '13

Hi, Please could you tell me if Stunnel supports HTTPS on the client-side i.e. a true SSL proxy with client-side SSL and server-side SSL (or if anyone has developed a version that does)? I have tried searching for this without luck because it is difficult to narrow down the search criteria e.g. Stunnel is already cited as an SSL proxy. jmwb ____________________________________________________________ South Africas premier free email service - www.webmail.co.za For super low premiums, click here. http://www.dialdirect.co.za/landing/oct/1/?vdn=15752

2 1

stunnel 4.55 released (security update)
by Michal Trojnara 03 Mar '13

03 Mar '13

Dear Users, I have released version 4.55 of stunnel. This is a massive bugfix release, including a security bugfix. Update is highly recommended. The ChangeLog entry: Version 4.55, 2013.03.03, urgency: HIGH: * Security bugfix - OpenSSL updated to version 1.0.1e in Win32/Android builds. - Buffer overflow vulnerability fixed in the NTLM authentication of the CONNECT protocol negotiation. See https://www.stunnel.org/CVE-2013-1762.html for details. * New features - SNI wildcard matching in server mode. - Terminal version of stunnel (tstunnel.exe) build for Win32. * Bugfixes - Fixed write half-close handling in the transfer() function (thx to Dustin Lundquist). - Fixed EAGAIN error handling in the transfer() function (thx to Jan Bee). - Restored default signal handlers before execvp() (thx to Michael Weiser). - Fixed memory leaks in protocol negotiation (thx to Arthur Mesh). - Fixed a file descriptor leak during configuration file reload (thx to Arthur Mesh). - Closed SSL sockets were removed from the the transfer() c->fds poll. - Minor fix in handling exotic inetd-mode configurations. - WCE compilation fixes. - IPv6 compilation fix in protocol.c. - Windows installer fixes. Home page: https://www.stunnel.org/ Download: https://www.stunnel.org/downloads.html SHA-256 hash for stunnel-4.55.tar.gz: 5a4acecfabd454415c727435acdfca7dc46aa542998fb278293f494a6d36d37a Best regards, Mike

1 0

Broken pipes and TCP resets on parallel requests over stunnel
by Jan Bee 22 Feb '13

22 Feb '13

Hi, I'm running stunnel (ubuntu 4.42-1, confirmed with 4.54 that has been built from source) against a backend I've only limited control over which was running fine for a long time. At some point in the last few days, the clients stopped being able to make *concurrent* HTTP requests (by different threads) over the stunnel. The client applications using the tunnel enounter a 'Connection refused' error. The issue has been isolated to curl requests (instead of the original client application). Running a tcpdump on both, loopback and uplink, showed that every additional request results in an ACK from the stunnel to both the client and the remote side and a few ms later a RST, ACK is sent in the *same* direction (again from the stunnel to both client and remote end). The stunnel log shows an error about a broken pipe whenever these failures occur: Feb 18 11:09:24 x2 stunnel: LOG7[555:139702117717760]: Socket closed on read Feb 18 11:09:24 x2 stunnel: LOG7[555:139702117717760]: Sending SSL write shutdown Feb 18 11:09:24 x2 stunnel: LOG7[555:139702117717760]: SSL alert (write): warning: close notify Feb 18 11:09:24 x2 stunnel: LOG6[555:139702117717760]: SSL_shutdown successfully sent close_notify Feb 18 11:09:24 x2 stunnel: LOG5[555:139702117717760]: Error detected on socket (read) file descriptor: Broken pipe (32) Feb 18 11:09:24 x2 stunnel: LOG5[555:139702117717760]: Connection reset: 1320 bytes sent to SSL, 48625 bytes sent to socket Feb 18 11:09:24 x2 stunnel: LOG7[555:139702117717760]: Service xtunnel finished (4 left) An strace on the stunnel shows: 6425 <... setsockopt resumed> ) = 0 6425 close(18 <unfinished ...> 6465 poll([{fd=15, events=POLLOUT}, {fd=22, events=POLLIN}], 2, 43200000 <unfinished ...> 6425 <... close resumed> ) = 0 6465 <... poll resumed> ) = 2 ([{fd=15, revents=POLLOUT|POLLERR|POLLHUP}, {fd=22, revents=POLLIN}]) 6425 sendto(13, "<31>Feb 18 11:34:35 stunnel: LOG7[6395:140601236756224]: Service xtunnel finished (4 left)", 99, MSG_NOSIGNAL, NULL, 0 <unf inished ...> 6465 getsockopt(15, SOL_SOCKET, SO_ERROR, [32], [4]) = 0 6425 <... sendto resumed> ) = 99 6465 futex(0x7fe045ec3754, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...> 6425 futex(0x7fe045ec3754, FUTEX_WAKE_PRIVATE, 1 <unfinished ...> 6465 <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable) 6425 <... futex resumed> ) = 0 6465 sendto(13, "<29>Feb 18 11:34:35 stunnel: LOG5[6395:140601236686592]: Error detected on socket (read) file descriptor: Broken pipe (32)", 122, MSG_NOSIGNAL, NULL, 0 <unfinished ...> 6425 write(2, "2013.02.15 11:34:35 LOG7[6395:140601236756224]: Service xtunnel finished (4 left)\n", 91 <unfinished ...> 6465 <... sendto resumed> ) = 122 6425 <... write resumed> ) = 91 6465 futex(0x7fe045ec3754, FUTEX_WAKE_PRIVATE, 1 <unfinished ...> 6425 sendto(13, "<31>Feb 18 11:34:35 stunnel: LOG7[6395:140601236756224]: str_stats: 0 block(s), 0 byte(s)", 89, MSG_NOSIGNAL, NULL, 0 <unfinished ...> 6465 <... futex resumed> ) = 0 6465 write(2, "2013.02.15 11:34:35 LOG5[6395:140601236686592]: Error detected on socket (read) file descriptor: Broken pipe (32)\n", 114 <unfinished ...> $ ps auxww|grep stunnel4 shows: root 28587 0.1 0.0 437844 7780 ? Ss 09:37 0:11 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf root 29170 0.0 0.0 43876 1180 ? S 09:37 0:00 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf root 29171 0.0 0.0 43876 1180 ? S 09:37 0:00 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf root 29172 0.0 0.0 43876 1180 ? S 09:37 0:00 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf root 29173 0.0 0.0 43876 1180 ? S 09:37 0:00 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf root 29174 0.0 0.0 43876 1180 ? S 09:37 0:00 /usr/bin/stunnel4 /etc/xtunnel/stunnel.conf The stunnel config looks like this: foreground=yes debug=7 pid=/var/run/xtunnel.pid client=yes CAfile=/etc/ssl/certs/xtunnel-chains.pem verify=3 engine=dynamic engineCtrl=SO_PATH:/usr/lib/engines/engine_pkcs11.so engineCtrl=ID:pkcs11 engineCtrl=LIST_ADD:1 engineCtrl=LOAD engineCtrl=MODULE_PATH:libopencryptoki.so.0 engineCtrl=INIT engineCtrl=PIN:XXXXXX [xtunnel] engineNum=1 key=id_4 cert=/etc/xtunnel/client-cert.pem accept=127.0.0.1:9999 connect=192.168.200.1:8443 Does anyone have an idea what could be going wrong here or how to troubleshoot this any further? Thanks! Jan

1 0

Stunnel in pgsql mode, libpq, and SSL session caching..
by Matt Wise 17 Feb '13

17 Feb '13

Is there any level of SSL Session Caching when using Stunnel in pgsql mode, and using libpq-based Postgres clients? If not, I'm wondering what tuning we can do on the Stunnel side to get the best performance if we have alot of clients that connect very fequently to the servers.. --matt

1 0

STUNNEL --- How to chose the AES cipher with TLS v1.2
by Editor 14 Feb '13

14 Feb '13

Hi to all: In reading the FAQ and looking at the sample configuration file, I do not see an example of how to correctly configure the application to use the more current AES-256 or the AES-128 cipher configurations. I do have the current OpenSSL on the host (a Sun SPARC box). The idea is to use this host as a SSL proxy for a number of services. I did see this reference: options = CIPHER_SERVER_PREFERENCE But not how to then set the SSL cipher except as I found on Google. There was this on the MAN page but it seems to fail in my configuration: ciphers = cipherlist Select permitted SSL ciphers. A colon delimited list of the ciphers to allow in the SSL connection. For example DES-CBC3-SHA:IDEA-CBC-MD5 Thanks. Kevin Reference Ciphers supported by OpenSSL: http://www.openssl.org/docs/apps/ciphers.html

2 1

stunnel port question
by Stewart Anderson 13 Feb '13

13 Feb '13

Hi all, ty in advance for any help. I have a service that I can connect to a destination over stunnel, but I am not able to get the ack I expect. Internal sending service => stunnel => external listening service I think the problem may be that the firewall is blocking inbound traffic. I need to specify a specific port for the firewall team to open so that traffic can get back to my stunnel service, since every time stunnel starts it will be making a connection from a different port on the external facing side of the SSL encapsulation service/pipe/whatever you want to call it!! What would be the best way to configure stunnel for that scenario. I can see the INETD mode but that does not seem to be what I am looking for, I can also see the transparent option but not sure what that really does. Any advice appreciated. Regards Stewart Your Hospital needs YOU! We need you to register as a Public, Patient or Staff member and help shape the future of your healthcare. Call 0800 280 2581 to register by phone or you can email bradfordhospitals(a)capitaregistrars.com<mailto:[email protected]> and ask to be registered as a new member. For more information about our hospitals and Foundation Trust Membership please visit www.bradfordhospitals.nhs.uk<http://www.bradfordhospitals.nhs.uk> This message is confidential. It may also contain privileged information. The contents of this e-mail and any attachments are intended for the named addressee only. Unless you are the named addressee or authorised to receive the e-mail of the named addressee you may not disclose, use or copy the contents of the e-mail. If you are not the person for whom the message was intended, please notify the sender immediately at Bradford Teaching Hospitals NHS Foundation Trust and delete the material from your computer. You must not use the message for any other purpose, nor disclose its contents to any person other than the intended recipient. Bradford Teaching Hospitals NHS Foundation Trust does not accept responsibility for this message and any views or opinions contained in this e-mail are solely those of the author unless expressly stated otherwise.

1 0

Stunnel over a separate proxy?
by Alex Gottschalk 12 Feb '13

12 Feb '13

I've successfully deployed stunnel4 to wrap rsync for transferring data between remote sites and a central repository. The issue I'm running into, is that some of these sites mandate use of a proxy (HTTP or SOCKS5 usually) for outbound network connections. It seems like there is some proxy support in stunnel with the protocol{Host,Authentication,etc} configuration options, but I have had zero luck getting them to work. For example, I've tried making a simple SOCKS5 proxy using ssh, that I'm successfully able to send HTTP traffic over: ssh -g -D1080 proxy-host # create the proxy, open port 1080 on a public interface then in the client stunnel.conf: [rsync] protocol = connect protocolHost = proxy-host:1080 accept = 127.0.0.1:873 connect = rsync-destination:443 Keep in mind this is an already-working stunnel - the only difference is the addition of the protocol and protocolHost lines above. When I run stunnel in the foreground with that configuration change, I get the following error trying to run rsync: $ rsync -v dev.inst.kvpdata rsync://localhost/putdata/ rsync: read error: Connection reset by peer (104) rsync error: error in rsync protocol data stream (code 12) at io.c(605) [sender=2.6.9] And no log messages appear in stunnel's stderr whatsoever. What am I doing wrong? I get identical results using an HTTP proxy with squid, instead of the socks5 proxy. Thanks, please let me know if there's any more information I should include to help with figuring this out. Alex Gottschalk

3 4

transfer() loop executes not transferring any data and truncated data when using unix sockets
by Stephen Balukoff 08 Feb '13

08 Feb '13

Hello! Recently we started seeing some erroneous behavior in one of our load balancer configurations in which we're using stunnel for SSL tunnel termination with web clients. Specifically, the setup looks like the following: Web client ---(SSL)---> stunnel ---(unix socket)--> haproxy ---(tcp/http)---> web server After extensive troubleshooting we were able to determine that when the following parameters are present: * Client forces non-keepalive connection * Client generates a POST request, the response to which (generated by the back-end web server) is greater than about 8k * stunnel and haproxy communicate via unix socket ...then most responses end up being truncated by an extraneous TCP RST packet from stunnel, and the following log lines are generated: Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: transfer() loop executes not transferring any data Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: please report the problem to Michal.Trojnara(a)mirt.net Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: stunnel 4.54 on x86_64-unknown-linux-gnu platform Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: Compiled/running with OpenSSL 1.0.0-fips 29 Mar 2010 Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: Threading:PTHREAD SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:POLL+IPv6 Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: protocol=TLSv1, SSL_pending=0 Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: sock_open_rd=n, sock_open_wr=Y Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: SSL_RECEIVED_SHUTDOWN=n, SSL_SENT_SHUTDOWN=Y Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: sock_can_rd=Y, sock_can_wr=n Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: ssl_can_rd=n, ssl_can_wr=n Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: read_wants_read=Y, read_wants_write=n Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: write_wants_read=n, write_wants_write=n Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: shutdown_wants_read=n, shutdown_wants_write=n Jan 23 15:24:17 ds420a stunnel: LOG3[22586:139835614443264]: socket input buffer: 0 byte(s), ssl input buffer: 0 byte(s) The work arounds we have found are either: 1. Make stunnel and haproxy communicate over a TCP socket bound to the loopback interface (less ideal, as then we're limited to 65k connections) 2. Add the "reset=no" parameter to our stunnel.conf (which seems to fix the problem, but makes me wonder if we're not opening ourselves up to other problems-- like really getting stuck in an infinite loop that that watchdog is intended to avoid.) In any case based on what "reset=no" is supposed to do as well as where that first line of the error output above is being generated in the code, it's clear that the main client data transfer loop in client.c (starting line 519) is being called too often with no data to transfer, which triggers the infinite loop detection in the transfer() function (client.c, starting line 832). My best hypothesis at this point is that the transfer() code was written only with TCP sockets in mind, and that something about the unix socket in use here is triggering that loop too often. Maybe s_poll_wait on line 541 is being called with parameters which are right for a TCP socket but inappropriate for a unix socket? At this point though, we're at the limit of my socket programming ability, so I'm a little stuck. (Would like to have simply fixed this and submitted a patch... but cest la vie, eh.) We'd like to avoid using a TCP socket to communicate between stunnel and haproxy simply because it's a little less efficient, and because there's an artificial 65k limit on the number of back-end connections we can support per loopback IP if we do that. Alternatively, if someone could verify that "reset=no" is an acceptable / safe work around in this case, I'd appreciate that (though, of course, I'd prefer my logs not to get spammed on every connection. :P ) Is there any other data I can provide to help troubleshoot and fix this? Thanks, Stephen -- Stephen Balukoff Blue Box Group, LLC (800)613-4305 x807

3 3

LZ4
by Death Master 06 Feb '13

06 Feb '13

Do you plan adding LZ4(much faster than gzip) support to stunnel?

2 1

Re: [stunnel-users] fix resource leaks and potential null
by Arthur Mesh 05 Feb '13

05 Feb '13

dereferences in 4.54 Reply-To: In-Reply-To: <mailman.1.1359889202.25775.stunnel-users(a)stunnel.org> On Sun, Feb 03, 2013 at 12:00:02PM +0100, stunnel-users-request(a)stunnel.org wrote: > > - char line_text[CONFLINELEN], *errstr; > > + char line_text[CONFLINELEN], *errstr = NULL; > Were you able to identify a case where it's used without > initialization? This is interesting. > It would be a good idea to fix it there instead of implementing a > workaround here. Hi, I will provide the output of coverity run for these defect: int parse_conf(char *name, CONF_TYPE type) { 1997 DISK_FILE *df; At (1): Declaring variable "errstr" without initializer. 1998 char line_text[CONFLINELEN], *errstr; 1999 char config_line[CONFLINELEN], *config_opt, *config_arg; 2000 int line_number, i; 2001 SERVICE_OPTIONS *section, *new_section; 2002 static char *filename=NULL; /* a copy of config file name for reloading */ 2003#ifndef USE_WIN32 2004 int fd; 2005 char *tmpstr; 2006#endif 2007 At (2): Condition "name", taking true branch 2008 if(name) /* not reload */ 2009 filename=str_dup(name); 2010 At (3): Condition "type == 2U", taking true branch 2011 s_log(LOG_NOTICE, "Reading configuration from %s %s", 2012 type==CONF_FD ? "descriptor" : "file", filename); 2013#ifndef USE_WIN32 At (4): Condition "type == 2U", taking true branch 2014 if(type==CONF_FD) { /* file descriptor */ 2015 fd=strtol(filename, &tmpstr, 10); At (5): Condition "tmpstr == filename", taking false branch At (6): Condition "*tmpstr", taking false branch 2016 if(tmpstr==filename || *tmpstr) { /* not a number */ 2017 s_log(LOG_ERR, "Invalid file descriptor number"); 2018 print_syntax(); 2019 return 1; 2020 } 2021 df=file_fdopen(fd); At (7): Falling through to end of if statement 2022 } else 2023#endif 2024 df=file_open(filename, 0); At (8): Condition "!df", taking false branch 2025 if(!df) { 2026 s_log(LOG_ERR, "Cannot read configuration"); 2027 if(type!=CONF_RELOAD) 2028 print_syntax(); 2029 return 1; 2030 } 2031 2032 memset(&new_global_options, 0, sizeof(GLOBAL_OPTIONS)); /* reset global options */ 2033 memset(&new_service_options, 0, sizeof(SERVICE_OPTIONS)); /* reset local options */ 2034 new_service_options.next=NULL; 2035 section=&new_service_options; 2036 parse_global_option(CMD_BEGIN, NULL, NULL); 2037 parse_service_option(CMD_BEGIN, section, NULL, NULL); At (9): Condition "type != 0U", taking true branch 2038 if(type!=CONF_RELOAD) { /* provide defaults for gui.c */ 2039 memcpy(&global_options, &new_global_options, sizeof(GLOBAL_OPTIONS)); 2040 memcpy(&service_options, &new_service_options, sizeof(SERVICE_OPTIONS)); 2041 } 2042 2043 line_number=0; At (10): Condition "file_getline(df, line_text, 16384) >= 0", taking true branch At (19): Condition "file_getline(df, line_text, 16384) >= 0", taking false branch 2044 while(file_getline(df, line_text, CONFLINELEN)>=0) { 2045 memcpy(config_line, line_text, CONFLINELEN); 2046 ++line_number; 2047 config_opt=config_line; At (11): Condition "__istype((unsigned char)*config_opt, 16384UL)", taking true branch At (12): Condition "__istype((unsigned char)*config_opt, 16384UL)", taking false branch 2048 while(isspace((unsigned char)*config_opt)) 2049 ++config_opt; /* remove initial whitespaces */ At (13): Condition "i >= 0", taking true branch At (14): Condition "__istype((unsigned char)config_opt[i], 16384UL)", taking true branch At (15): Condition "i >= 0", taking true branch At (16): Condition "__istype((unsigned char)config_opt[i], 16384UL)", taking false branch 2050 for(i=strlen(config_opt)-1; i>=0 && isspace((unsigned char)config_opt[i]); --i) 2051 config_opt[i]='\0'; /* remove trailing whitespaces */ At (17): Condition "config_opt[0] == 0", taking true branch 2052 if(config_opt[0]=='\0' || config_opt[0]=='#' || config_opt[0]==';') /* empty or comment */ At (18): Continuing loop 2053 continue; 2054 if(config_opt[0]=='[' && config_opt[strlen(config_opt)-1]==']') { /* new section */ 2055 if(!new_service_options.next) { 2056 errstr=parse_global_option(CMD_END, NULL, NULL); 2057 if(errstr) { 2058 s_log(LOG_ERR, "Line %d: \"%s\": %s", line_number, line_text, errstr); 2059 file_close(df); 2060 return 1; 2061 } 2062 } 2063 ++config_opt; 2064 config_opt[strlen(config_opt)-1]='\0'; 2065 new_section=str_alloc(sizeof(SERVICE_OPTIONS)); 2066 memcpy(new_section, &new_service_options, sizeof(SERVICE_OPTIONS)); 2067 new_section->servname=str_dup(config_opt); 2068 new_section->session=NULL; 2069 new_section->next=NULL; 2070 section->next=new_section; 2071 section=new_section; 2072 continue; 2073 } 2074 config_arg=strchr(config_line, '='); 2075 if(!config_arg) { 2076 s_log(LOG_ERR, "Line %d: \"%s\": No '=' found", line_number, line_text); 2077 file_close(df); 2078 return 1; 2079 } 2080 *config_arg++='\0'; /* split into option name and argument value */ 2081 for(i=strlen(config_opt)-1; i>=0 && isspace((unsigned char)config_opt[i]); --i) 2082 config_opt[i]='\0'; /* remove trailing whitespaces */ 2083 while(isspace((unsigned char)*config_arg)) 2084 ++config_arg; /* remove initial whitespaces */ 2085 errstr=parse_service_option(CMD_EXEC, section, config_opt, config_arg); 2086 if(!new_service_options.next && errstr==option_not_found) 2087 errstr=parse_global_option(CMD_EXEC, config_opt, config_arg); 2088 if(errstr) { 2089 s_log(LOG_ERR, "Line %d: \"%s\": %s", line_number, line_text, errstr); 2090 file_close(df); 2091 return 1; 2092 } 2093 } 2094 file_close(df); 2095 At (20): Condition "new_service_options.next", taking true branch 2096 if(new_service_options.next) { /* daemon mode: initialize sections */ At (21): Condition "section", taking false branch 2097 for(section=new_service_options.next; section; section=section->next) { 2098 s_log(LOG_INFO, "Initializing service [%s]", section->servname); 2099 errstr=parse_service_option(CMD_END, section, NULL, NULL); 2100 if(errstr) 2101 break; 2102 } At (22): Falling through to end of if statement 2103 } else { /* inetd mode: need to initialize global options */ 2104 errstr=parse_global_option(CMD_END, NULL, NULL); 2105 if(errstr) { 2106 s_log(LOG_ERR, "Global options: %s", errstr); 2107 return 1; 2108 } 2109 s_log(LOG_INFO, "Initializing inetd mode configuration"); 2110 section=&new_service_options; 2111 errstr=parse_service_option(CMD_END, section, NULL, NULL); 2112 } CID 32706: Uninitialized pointer read (UNINIT)At (23): Using uninitialized value "errstr". 2113 if(errstr) { CID 32693: Dereference after null check (FORWARD_NULL) [select defect] 2114 s_log(LOG_ERR, "Service [%s]: %s", section->servname, errstr); 2115 return 1; 2116 } > > - s_log(LOG_ERR, "Service [%s]: %s", section->servname, errstr); > > + s_log(LOG_ERR, "Service [%s]: %s", section ? section->servname : "", > > + errstr); > Again it would be useful to fix the root cause instead of implementing a > workaround. Coverity output: At (1): Condition "name", taking true branch 2008 if(name) /* not reload */ 2009 filename=str_dup(name); 2010 At (2): Condition "type == 2U", taking true branch 2011 s_log(LOG_NOTICE, "Reading configuration from %s %s", 2012 type==CONF_FD ? "descriptor" : "file", filename); 2013#ifndef USE_WIN32 At (3): Condition "type == 2U", taking true branch 2014 if(type==CONF_FD) { /* file descriptor */ 2015 fd=strtol(filename, &tmpstr, 10); At (4): Condition "tmpstr == filename", taking false branch At (5): Condition "*tmpstr", taking false branch 2016 if(tmpstr==filename || *tmpstr) { /* not a number */ 2017 s_log(LOG_ERR, "Invalid file descriptor number"); 2018 print_syntax(); 2019 return 1; 2020 } 2021 df=file_fdopen(fd); At (6): Falling through to end of if statement 2022 } else 2023#endif 2024 df=file_open(filename, 0); At (7): Condition "!df", taking false branch 2025 if(!df) { 2026 s_log(LOG_ERR, "Cannot read configuration"); 2027 if(type!=CONF_RELOAD) 2028 print_syntax(); 2029 return 1; 2030 } 2031 2032 memset(&new_global_options, 0, sizeof(GLOBAL_OPTIONS)); /* reset global options */ 2033 memset(&new_service_options, 0, sizeof(SERVICE_OPTIONS)); /* reset local options */ 2034 new_service_options.next=NULL; 2035 section=&new_service_options; 2036 parse_global_option(CMD_BEGIN, NULL, NULL); 2037 parse_service_option(CMD_BEGIN, section, NULL, NULL); At (8): Condition "type != 0U", taking true branch 2038 if(type!=CONF_RELOAD) { /* provide defaults for gui.c */ 2039 memcpy(&global_options, &new_global_options, sizeof(GLOBAL_OPTIONS)); 2040 memcpy(&service_options, &new_service_options, sizeof(SERVICE_OPTIONS)); 2041 } 2042 2043 line_number=0; At (9): Condition "file_getline(df, line_text, 16384) >= 0", taking true branch At (18): Condition "file_getline(df, line_text, 16384) >= 0", taking false branch 2044 while(file_getline(df, line_text, CONFLINELEN)>=0) { 2045 memcpy(config_line, line_text, CONFLINELEN); 2046 ++line_number; 2047 config_opt=config_line; At (10): Condition "__istype((unsigned char)*config_opt, 16384UL)", taking true branch At (11): Condition "__istype((unsigned char)*config_opt, 16384UL)", taking false branch 2048 while(isspace((unsigned char)*config_opt)) 2049 ++config_opt; /* remove initial whitespaces */ At (12): Condition "i >= 0", taking true branch At (13): Condition "__istype((unsigned char)config_opt[i], 16384UL)", taking true branch At (14): Condition "i >= 0", taking true branch At (15): Condition "__istype((unsigned char)config_opt[i], 16384UL)", taking false branch 2050 for(i=strlen(config_opt)-1; i>=0 && isspace((unsigned char)config_opt[i]); --i) 2051 config_opt[i]='\0'; /* remove trailing whitespaces */ At (16): Condition "config_opt[0] == 0", taking true branch 2052 if(config_opt[0]=='\0' || config_opt[0]=='#' || config_opt[0]==';') /* empty or comment */ At (17): Continuing loop 2053 continue; 2054 if(config_opt[0]=='[' && config_opt[strlen(config_opt)-1]==']') { /* new section */ 2055 if(!new_service_options.next) { 2056 errstr=parse_global_option(CMD_END, NULL, NULL); 2057 if(errstr) { 2058 s_log(LOG_ERR, "Line %d: \"%s\": %s", line_number, line_text, errstr); 2059 file_close(df); 2060 return 1; 2061 } 2062 } 2063 ++config_opt; 2064 config_opt[strlen(config_opt)-1]='\0'; 2065 new_section=str_alloc(sizeof(SERVICE_OPTIONS)); 2066 memcpy(new_section, &new_service_options, sizeof(SERVICE_OPTIONS)); 2067 new_section->servname=str_dup(config_opt); 2068 new_section->session=NULL; 2069 new_section->next=NULL; 2070 section->next=new_section; 2071 section=new_section; 2072 continue; 2073 } 2074 config_arg=strchr(config_line, '='); 2075 if(!config_arg) { 2076 s_log(LOG_ERR, "Line %d: \"%s\": No '=' found", line_number, line_text); 2077 file_close(df); 2078 return 1; 2079 } 2080 *config_arg++='\0'; /* split into option name and argument value */ 2081 for(i=strlen(config_opt)-1; i>=0 && isspace((unsigned char)config_opt[i]); --i) 2082 config_opt[i]='\0'; /* remove trailing whitespaces */ 2083 while(isspace((unsigned char)*config_arg)) 2084 ++config_arg; /* remove initial whitespaces */ 2085 errstr=parse_service_option(CMD_EXEC, section, config_opt, config_arg); 2086 if(!new_service_options.next && errstr==option_not_found) 2087 errstr=parse_global_option(CMD_EXEC, config_opt, config_arg); 2088 if(errstr) { 2089 s_log(LOG_ERR, "Line %d: \"%s\": %s", line_number, line_text, errstr); 2090 file_close(df); 2091 return 1; 2092 } 2093 } 2094 file_close(df); 2095 At (19): Condition "new_service_options.next", taking true branch 2096 if(new_service_options.next) { /* daemon mode: initialize sections */ At (20): Comparing "section" to null implies that "section" might be null. At (21): Condition "section", taking false branch 2097 for(section=new_service_options.next; section; section=section->next) { 2098 s_log(LOG_INFO, "Initializing service [%s]", section->servname); 2099 errstr=parse_service_option(CMD_END, section, NULL, NULL); 2100 if(errstr) 2101 break; 2102 } At (22): Falling through to end of if statement 2103 } else { /* inetd mode: need to initialize global options */ 2104 errstr=parse_global_option(CMD_END, NULL, NULL); 2105 if(errstr) { 2106 s_log(LOG_ERR, "Global options: %s", errstr); 2107 return 1; 2108 } 2109 s_log(LOG_INFO, "Initializing inetd mode configuration"); 2110 section=&new_service_options; 2111 errstr=parse_service_option(CMD_END, section, NULL, NULL); 2112 } CID 32706: Uninitialized pointer read (UNINIT) [select defect] At (23): Condition "errstr", taking true branch 2113 if(errstr) { CID 32693: Dereference after null check (FORWARD_NULL)At (24): Dereferencing null pointer "section". 2114 s_log(LOG_ERR, "Service [%s]: %s", section->servname, errstr); 2115 return 1; 2116 } > > - if(!strcasecmp(fl->name, string)) { > > + if(string && !strcasecmp(fl->name, string)) { > Could you give an example parameter where "string" may be NULL here? 2238/* facilities only make sense on Unix */ 2239#if !defined (USE_WIN32) && !defined (__vms) At (1): Condition "strchr(string, 46)", taking true branch 2240 if(strchr(string, '.')) { /* we have a facility specified */ 2241 new_global_options.facility=-1; 2242 string=strtok(arg_copy, "."); /* break it up */ 2243 At (2): Condition "fl->name", taking true branch 2244 for(fl=facilities; fl->name; ++fl) { At (3): Condition "!strcasecmp(fl->name, string)", taking true branch 2245 if(!strcasecmp(fl->name, string)) { 2246 new_global_options.facility=fl->value; At (4): Breaking from loop 2247 break; 2248 } 2249 } At (5): Condition "new_global_options.facility == -1", taking false branch 2250 if(new_global_options.facility==-1) 2251 return 1; /* FAILED */ 2252 string=strtok(NULL, "."); /* set to the remainder */ 2253 } 2254#endif /* USE_WIN32, __vms */ 2255 2256 /* time to check the syslog level */ At (6): Comparing "string" to null implies that "string" might be null. At (7): Condition "string", taking false branch 2257 if(string && strlen(string)==1 && *string>='0' && *string<='7') { 2258 new_global_options.debug_level=*string-'0'; 2259 return 0; /* OK */ 2260 } 2261 new_global_options.debug_level=8; /* illegal level */ At (8): Condition "fl->name", taking true branch 2262 for(fl=levels; fl->name; ++fl) { CID 11183: Dereference after null check (FORWARD_NULL)At (9): Passing null pointer "string" to function "strcasecmp(char const *, char const *)", which dereferences it. 2263 if(!strcasecmp(fl->name, string)) { 2264 new_global_options.debug_level=fl->value; 2265 break; 2266 } 2267 } 2268 if(new_global_options.debug_level==8) 2269 return 1; /* FAILED */ 2270 return 0; /* OK */ 2271} Let me know if more info is required. Thanks

5 16

fix resource leaks and potential null dereferences in 4.54
by Arthur Mesh 03 Feb '13

03 Feb '13

Hi, I am trying to figure out where bug reports should be submitted. https://www.stunnel.org/lists.html references this mailing list, so here is my attempt at a bug report with a potential fix. If this is not an appropriate list, please redirect me. A coverity run has uncovered quite a few memory and other resource leaks, plus some potential NULL dereferences. Inline is an attempt to fix them. Imho, these are mostly self-explanatory, but if someone needs more details, I would be happy to provide those as well. Thanks diff -ru stunnel-4.54/src/options.c stunnel-4.54.p/src/options.c --- stunnel-4.54/src/options.c 2012-10-09 01:50:54.000000000 -0700 +++ stunnel-4.54.p/src/options.c 2013-01-29 16:26:00.000000000 -0800 @@ -1988,7 +1988,7 @@ int parse_conf(char *name, CONF_TYPE type) { DISK_FILE *df; - char line_text[CONFLINELEN], *errstr; + char line_text[CONFLINELEN], *errstr = NULL; char config_line[CONFLINELEN], *config_opt, *config_arg; int line_number, i; SERVICE_OPTIONS *section, *new_section; @@ -2104,7 +2104,8 @@ errstr=parse_service_option(CMD_END, section, NULL, NULL); } if(errstr) { - s_log(LOG_ERR, "Service [%s]: %s", section->servname, errstr); + s_log(LOG_ERR, "Service [%s]: %s", section ? section->servname : "", + errstr); return 1; } @@ -2253,7 +2254,7 @@ } new_global_options.debug_level=8; /* illegal level */ for(fl=levels; fl->name; ++fl) { - if(!strcasecmp(fl->name, string)) { + if(string && !strcasecmp(fl->name, string)) { new_global_options.debug_level=fl->value; break; } @@ -2428,6 +2429,7 @@ if(get_last_socket_error()!=S_ENOPROTOOPT) { s_log(LOG_ERR, "Failed to get %s OS default", ptr->opt_str); sockerror("getsockopt"); + close(fd); return 1; /* FAILED */ } td=str_dup("write-only"); @@ -2442,6 +2444,7 @@ ptr->opt_str, ta, tl, tr, td); str_free(ta); str_free(tl); str_free(tr); str_free(td); } + close(fd); return 0; /* OK */ } Only in stunnel-4.54.p/src: options.c.orig diff -ru stunnel-4.54/src/protocol.c stunnel-4.54.p/src/protocol.c --- stunnel-4.54/src/protocol.c 2012-10-09 01:46:47.000000000 -0700 +++ stunnel-4.54.p/src/protocol.c 2013-01-29 16:26:00.000000000 -0800 @@ -244,30 +244,36 @@ /**************************************** smtp */ static void smtp_client(CLI *c) { - char *line; + char *line = NULL; do { /* copy multiline greeting */ + str_free(line); /* okay to str_free(NULL) */ line=fd_getline(c, c->remote_fd.fd); fd_putline(c, c->local_wfd.fd, line); } while(isprefix(line, "220-")); fd_putline(c, c->remote_fd.fd, "EHLO localhost"); do { /* skip multiline reply */ + str_free(line); line=fd_getline(c, c->remote_fd.fd); } while(isprefix(line, "250-")); if(!isprefix(line, "250 ")) { /* error */ + str_free(line); s_log(LOG_ERR, "Remote server is not RFC 1425 compliant"); longjmp(c->err, 1); } fd_putline(c, c->remote_fd.fd, "STARTTLS"); do { /* skip multiline reply */ + str_free(line); line=fd_getline(c, c->remote_fd.fd); } while(isprefix(line, "220-")); if(!isprefix(line, "220 ")) { /* error */ + str_free(line); s_log(LOG_ERR, "Remote server is not RFC 2487 compliant"); longjmp(c->err, 1); } + str_free(line); } static void smtp_server(CLI *c) { @@ -290,21 +296,27 @@ line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "220")) { s_log(LOG_ERR, "Unknown server welcome"); + str_free(line); longjmp(c->err, 1); } fd_printf(c, c->local_wfd.fd, "%s + stunnel", line); + str_free(line); line=fd_getline(c, c->local_rfd.fd); if(!isprefix(line, "EHLO ")) { s_log(LOG_ERR, "Unknown client EHLO"); + str_free(line); longjmp(c->err, 1); } fd_printf(c, c->local_wfd.fd, "250-%s Welcome", line); + str_free(line); fd_putline(c, c->local_wfd.fd, "250 STARTTLS"); line=fd_getline(c, c->local_rfd.fd); if(!isprefix(line, "STARTTLS")) { s_log(LOG_ERR, "STARTTLS expected"); + str_free(line); longjmp(c->err, 1); } + str_free(line); fd_putline(c, c->local_wfd.fd, "220 Go ahead"); } @@ -316,15 +328,19 @@ line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "+OK ")) { s_log(LOG_ERR, "Unknown server welcome"); + str_free(line); longjmp(c->err, 1); } fd_putline(c, c->local_wfd.fd, line); + str_free(line); fd_putline(c, c->remote_fd.fd, "STLS"); line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "+OK ")) { s_log(LOG_ERR, "Server does not support TLS"); + str_free(line); longjmp(c->err, 1); } + str_free(line); } static void pop3_server(CLI *c) { @@ -332,17 +348,21 @@ line=fd_getline(c, c->remote_fd.fd); fd_printf(c, c->local_wfd.fd, "%s + stunnel", line); + str_free(line); line=fd_getline(c, c->local_rfd.fd); if(isprefix(line, "CAPA")) { /* client wants RFC 2449 extensions */ fd_putline(c, c->local_wfd.fd, "+OK Stunnel capability list follows"); fd_putline(c, c->local_wfd.fd, "STLS"); fd_putline(c, c->local_wfd.fd, "."); + str_free(line); line=fd_getline(c, c->local_rfd.fd); } if(!isprefix(line, "STLS")) { + str_free(line); s_log(LOG_ERR, "Client does not want TLS"); longjmp(c->err, 1); } + str_free(line); fd_putline(c, c->local_wfd.fd, "+OK Stunnel starts TLS negotiation"); } @@ -353,18 +373,22 @@ line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "* OK")) { + str_free(line); s_log(LOG_ERR, "Unknown server welcome"); longjmp(c->err, 1); } fd_putline(c, c->local_wfd.fd, line); + str_free(line); fd_putline(c, c->remote_fd.fd, "stunnel STARTTLS"); line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "stunnel OK")) { + str_free(line); fd_putline(c, c->local_wfd.fd, "* BYE stunnel: Server does not support TLS"); s_log(LOG_ERR, "Server does not support TLS"); longjmp(c->err, 2); /* don't reset */ } + str_free(line); } static void imap_server(CLI *c) { @@ -387,6 +411,7 @@ /* process server welcome and send it to client */ line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "* OK")) { + str_free(line); s_log(LOG_ERR, "Unknown server welcome"); longjmp(c->err, 1); } @@ -396,22 +421,29 @@ if(capa) *capa='K'; /* disable CAPABILITY within greeting */ fd_printf(c, c->local_wfd.fd, "%s (stunnel)", line); + str_free(line); while(1) { /* process client commands */ line=fd_getline(c, c->local_rfd.fd); /* split line into id and tail */ id=str_dup(line); tail=strchr(id, ' '); - if(!tail) + if(!tail) { + str_free(line); + str_free(id); break; + } *tail++='\0'; if(isprefix(tail, "STARTTLS")) { fd_printf(c, c->local_wfd.fd, "%s OK Begin TLS negotiation now", id); + str_free(line); + str_free(id); return; /* success */ } else if(isprefix(tail, "CAPABILITY")) { fd_putline(c, c->remote_fd.fd, line); /* send it to server */ + str_free(line); line=fd_getline(c, c->remote_fd.fd); /* get the capabilites */ if(*line=='*') { /* @@ -421,6 +453,7 @@ * LOGIN would fail as "unexpected command", anyway */ fd_printf(c, c->local_wfd.fd, "%s STARTTLS", line); + str_free(line); line=fd_getline(c, c->remote_fd.fd); /* next line */ } fd_putline(c, c->local_wfd.fd, line); /* forward to the client */ @@ -429,24 +462,35 @@ fd_putline(c, c->local_wfd.fd, "* BYE unexpected server response"); s_log(LOG_ERR, "Unexpected server response: %s", line); + str_free(line); + str_free(id); break; } + str_free(line); + str_free(id); } else if(isprefix(tail, "LOGOUT")) { fd_putline(c, c->local_wfd.fd, "* BYE server terminating"); fd_printf(c, c->local_wfd.fd, "%s OK LOGOUT completed", id); + str_free(id); + str_free(line); break; } else { fd_putline(c, c->local_wfd.fd, "* BYE stunnel: unexpected command"); fd_printf(c, c->local_wfd.fd, "%s BAD %s unexpected", id, tail); s_log(LOG_ERR, "Unexpected client command %s", tail); + str_free(line); + str_free(id); break; } } /* clean server shutdown */ fd_putline(c, c->remote_fd.fd, "stunnel LOGOUT"); line=fd_getline(c, c->remote_fd.fd); - if(*line=='*') + if(*line=='*') { + str_free(line); line=fd_getline(c, c->remote_fd.fd); + } + str_free(line); longjmp(c->err, 2); /* don't reset */ } @@ -458,15 +502,19 @@ line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "200 ") && !isprefix(line, "201 ")) { s_log(LOG_ERR, "Unknown server welcome"); + str_free(line); longjmp(c->err, 1); } fd_putline(c, c->local_wfd.fd, line); fd_putline(c, c->remote_fd.fd, "STARTTLS"); + str_free(line); line=fd_getline(c, c->remote_fd.fd); if(!isprefix(line, "382 ")) { s_log(LOG_ERR, "Server does not support TLS"); + str_free(line); longjmp(c->err, 1); } + str_free(line); } /**************************************** connect */ @@ -548,13 +596,17 @@ /* not "HTTP/1.0 200 Connection established" */ s_log(LOG_ERR, "CONNECT request rejected"); do { /* read all headers */ + str_free(line); line=fd_getline(c, c->remote_fd.fd); } while(*line); + str_free(line); longjmp(c->err, 1); } + str_free(line); s_log(LOG_INFO, "CONNECT request accepted"); do { line=fd_getline(c, c->remote_fd.fd); /* read all headers */ + str_free(line); } while(*line); } @@ -588,10 +640,13 @@ if(line[9]!='4' || line[10]!='0' || line[11]!='7') { /* code 407 */ s_log(LOG_ERR, "NTLM authorization request rejected"); do { /* read all headers */ + str_free(line); line=fd_getline(c, c->remote_fd.fd); } while(*line); + str_free(line); longjmp(c->err, 1); } + str_free(line); ntlm2_txt=NULL; do { /* read all headers */ line=fd_getline(c, c->remote_fd.fd); @@ -599,6 +654,7 @@ ntlm2_txt=str_dup(line+25); else if(isprefix(line, "Content-Length: ")) content_length=atol(line+16); + str_free(line); } while(*line); if(!ntlm2_txt) { /* no Proxy-Authenticate: NTLM header */ s_log(LOG_ERR, "Proxy-Authenticate: NTLM header not found"); Only in stunnel-4.54.p/src: protocol.c.orig diff -ru stunnel-4.54/src/stunnel.c stunnel-4.54.p/src/stunnel.c --- stunnel-4.54/src/stunnel.c 2012-08-18 14:11:53.000000000 -0700 +++ stunnel-4.54.p/src/stunnel.c 2013-01-29 16:26:00.000000000 -0800 @@ -119,12 +119,16 @@ fatal("Could not open /dev/null"); #endif /* standard Unix */ main_initialize(); - if(main_configure(argc>1 ? argv[1] : NULL, argc>2 ? argv[2] : NULL)) + if(main_configure(argc>1 ? argv[1] : NULL, argc>2 ? argv[2] : NULL)) { + close(fd); return 1; + } if(service_options.next) { /* there are service sections -> daemon mode */ #if !defined(__vms) && !defined(USE_OS2) - if(daemonize(fd)) + if(daemonize(fd)) { + close(fd); return 1; + } close(fd); /* create_pid() must be called after drop_privileges() * or it won't be possible to remove the file on exit */ Only in stunnel-4.54.p/src: stunnel.c.orig

3 4

X509 certificate info extract and use
by Pierre-Yves Bonnetain 03 Feb '13

03 Feb '13

Hello, We're looking for a way to add some kind of cross-control between an application and the TLS tunnelling tool that protects the data. I'll give an example, that may be easier to understand. My BigDatabase has it's login/password authentication process. Since my customers want to access the database through bad Internet, we set up a SSL/TLS frontend. Each customer has his own X509 certificate, with all proper bells and jingles in it. The frontend checks the certificate (CA sig, validity, revocation, etc.) and then, as it should, passes the unencrypted flow to the application. There is no way (or, rather, we have not found any way) to cross-check that the certificate AND the requested, application-level login, are linked together. This means that my evil neighbour, which bribed my gullible cat to get my login and password, could connect to my account (app-level auth) using his X509 cert (TLS tunnel auth). We would like to perform this cross-check between X509 certificate AND application-level auth. >From our point of view, this means that we need to "extract and send" some parts of the certificate (DN, validity dates, etc.) to some secondary tool/proxy. This one will check if the data is coherent wrt application credentials. M. Henrik Riomar sent a patch (http://www.stunnel.org/pipermail/stunnel-users/2012-October/003909.html) on the list last october that is one step closer to what we are looking for. We could build from it. Maybe some of you have already solved this kind of problem, or know of a tool that answer to this kind of needs ? Tia, -- Pierre-Yves Bonnetain-Nesterenko B&A Consultants - Sécurité informatique - www.ba-consultants.fr Tel. : +33 (0) 563 277 241 - Fax : +33 (0) 567 737 829

2 5

inetd mode endpoint count check
by Michael Weiser 03 Feb '13

03 Feb '13

Hello, a client setup such as this: client = yes foreground = yes connect = example.com:80 exec = cat execargs = cat causes stunnel-4.54 to fail with error: Service [stunnel]: Inetd mode must define one endpoint The attached patch fixes the problem for me. Dunno if the endpoint check is too lax for other cases then, though. -- Thanks, Micha

2 1

transparent proxy ssl for a socket server
by Alex Needham 29 Jan '13

29 Jan '13

Hi I have to figure out how to get some ssl encapsulation for an application we have that only servs on obscure ports, the app needs to retain the source ip adress of the client requests. So i looked at stunnel, its working great in transparent mode where the stunnel server is the default gateway of the socket server, but I would like to get the stunnel server onto the same machine as the socket server and keep the client src ip. Testing with a apache as a backend as its easy to test. running centos 6.3 (2.6.32-279.19.1.el6.x86_64), updated an hour ago, built stunnel 4.54 from src.rpm. The players stunnel-boxen external=192.168.0.1, internal=192.168.1.1 web/socket-boxen internal=192.168.1.11, dg=192.168.1.1 The configs Config A - works ok debug = 7 foreground = yes #not chrooted runnnig as root no setuid,setguid [socket-1234] cert=blarg.crt key=blarg.key accept = 192.168.0.1:1234 connect = 192.168.1.11:80 transparent = source Config B - Not so good connect = 192.168.1.1:80 <- inside interface of stunnel box iptables -t mangle -N DIVERT iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT iptables -t mangle -A DIVERT -j MARK --set-mark 1 iptables -t mangle -A DIVERT -j ACCEPT ip rule add fwmark 1 lookup 100 ip route add local 0.0.0.0/0 dev lo table 100 /etc/sysctl.conf no route filtering and forwarding is on am i trying something impossible? or am i missing something? Any help greatly appreciated, if I get this going I'll happily do a nice neater write up for others. Cheers Alex

2 1

child process reaping
by Michael Weiser 29 Jan '13

29 Jan '13

Hello, recent versions (4.47+ I think) of stunnel introduce the following code in stunnel.c: --- stunnel-4.46/src/stunnel.c 2011-11-03 10:06:59.000000000 +0100 +++ stunnel-4.54/src/stunnel.c 2012-08-18 23:11:53.000000000 +0200 [...] } else { /* inetd mode */ [...] + signal(SIGCHLD, SIG_IGN); /* ignore dead children */ + signal(SIGPIPE, SIG_IGN); /* ignore broken pipe */ + client_main(alloc_client_session(&service_options, 0, 1)); } In Linux, child processes seem to inherit their parent's SIGCHLD handler setting. This means that all of stunnel's child processes will be unable to wait for their children. This causes the following uucp-over-stunnel setup I have: CAfile = /etc/ssl/certs/cacert.pem cert = /etc/ssl/certs/suucpcert.pem key = /etc/ssl/private/suucpkey.unenc verify = 2 service = suucp exec = /usr/sbin/uucico execargs = uucico -l to fail horribly with messages such as this: uucico weiser - (2013-01-29 01:25:15.33 3676) Call complete (6 seconds 21620 bytes 35103 bps) uuxqt weiser root (2013-01-29 01:25:17.36 3677) Executing X.weiserSEQ1 (rbsmtp) uuxqt weiser root (2013-01-29 01:25:17.96 3677) ERROR: waitpid: No child processes uuxqt weiser root (2013-01-29 01:25:17.96 3677) Execution failed (X.weiserSEQ1) Restoring SIGCHLD to SIG_DFL just before execvp()'ing the child as in the attached patch seems to fix it. I also attach a small test case for reproducing. It can be run like this: nc -l -p 12345 -e "stunnel sigchldtest.conf" 127.0.0.1 & openssl s_client -quiet -verify 0 -connect 127.0.0.1:12345 and should produce the following output: child: 2654 child 2654 died When automatic child reaping it active it will fail like this: child: 2538 waitpid: No child processes BTW: On Mac OS X, the SIGCHLD handler setting does not seem to be inherited by children. -- Thanks, Micha

1 0

MATCH CERT AGAINST LDAP
by Alejandro Fernandez 26 Jan '13

26 Jan '13

Hi there! I would like to know if it's possible with stunnel, as is, to match a client certificate against a certstore in a directory service, instead of a file, so to be able to revoke from a service such as Fedora 389 some access. Please, understand that the idea is not to access the LDAP itself, but to access some service within a network and grant such access based on a directory service query. Thanks everyone, Alejandro

1 0

Re: [stunnel-users] Stunnel setup for SSL connection with POP3 server
by Ludolf Holzheid 25 Jan '13

25 Jan '13

On Thu, 2013-01-24 21:09:13 +0530, shanmuganathan sedukumar wrote: > > Hi Ludolf, > Thanks for your input. I will try the same :) Hello Shanmuganathan, always reply to the list, so others are able to follow (and to comment). > One more clarification, we have multiple mail accounts configured in the same POP3 server. In our application, for each email account the username/password credentials would vary. So, in stunnel config file do we need to specify the credentials with parameters? If so, how do we need to specify the credentials for all the accounts? As far as I understood, stunnel has nothing to do with the POP3 authentication. It merely provides with an (encrypted) transport layer for the (plain text) POP3 session. I.e., you have to specify the credentials in your application. HTH, Ludolf -- Bihl+Wiedemann GmbH Floßwörthstr. 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 e-mail: lholzheid(a)bihl-wiedemann.de website: www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim HRB 5796

1 0

stunnel for Solaris 10
by shanmuganathan sedukumar 24 Jan '13

24 Jan '13

Hi All, I'm new and about to start with stunnel. We are facing certain issues with our application server (operating on Solaris 10), as it is unable to establish SSL connection with an email exchange server (P0P3). So, we have planned to use stunnel for establishing SSL connection. May I get some guidelines on installation and configuration part, if anything available? Regards,Shanmuganathan

2 2

Hello, I am trying to connect to FIX server, and getting stunnel error.
by 724live 21 Jan '13

21 Jan '13

Hello, I am working on a project with FIX protocol, but have SSL connection error. *This is the stunnel.log info:* 2013.01.21 20:38:09 LOG5[5388:6900]: connect_blocking: connected XX.XX.XX.XX:2525 2013.01.21 20:38:09 LOG5[5388:6900]: Service [demo] connected remote server from 10.0.0.59:9532 2013.01.21 20:38:09 LOG7[5388:6900]: Remote socket (FD=620) initialized 2013.01.21 20:38:09 LOG7[5388:6900]: SNI: host name: XX.XX.XX.XX 2013.01.21 20:38:09 LOG7[5388:6900]: SSL state (connect): before/connect initialization 2013.01.21 20:38:09 LOG7[5388:6900]: SSL state (connect): SSLv3 write client hello A 2013.01.21 20:38:09 LOG7[5388:6900]: SSL state (connect): SSLv3 read server hello A 2013.01.21 20:38:09 LOG7[5388:6900]: SSL state (connect): SSLv3 read server certificate A 2013.01.21 20:38:09 LOG7[5388:6900]: SSL state (connect): SSLv3 read server done A 2013.01.21 20:38:09 LOG3[5388:6900]: error queue: 14098077: error:14098077:SSL routines:SSL3_SEND_CLIENT_KEY_ EXCHANGE:bad rsa encrypt 2013.01.21 20:38:09 LOG3[5388:6900]: SSL_connect: 4068078: error:04068078:rsa routines:RSA_EAY_PUBLIC_ENCRYPT:key size too small 2013.01.21 20:38:09 LOG5[5388:6900]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.01.21 20:38:09 LOG7[5388:6900]: Remote socket (FD=620) closed 2013.01.21 20:38:09 LOG7[5388:6900]: Local socket (FD=540) closed 2013.01.21 20:38:09 LOG7[5388:6900]: Service [demo] finished (0 left) I will appreciate if you can guide me with help. It will help to make your Archive Searchable. Thank you, Isaac

2 1

unknown protocol
by Brandon Glenn 11 Jan '13

11 Jan '13

I am currently trying to setup stunnel to help me send emails from a program that sends alerts but does not use SSL, to a cloud email service that I use that requires SSL. I have the configuration setup trying to find out where the error is, and I am down to this last error. SSL23_GET_CLIENT_HELLO:unknown protocol Here is my config file. ; Sample stunnel configuration file for Win32 by Michal Trojnara 2002-2012 ; Some options used here may be inadequate for your particular configuration ; This sample file does *not* represent stunnel.conf defaults ; Please consult the manual for detailed description of available options ; ************************************************************************** ; * Global options * ; ************************************************************************** ; Debugging stuff (may useful for troubleshooting) ;debug = 7 ;output = stunnel.log ; Disable FIPS mode to allow non-approved protocols and algorithms fips = no ; ************************************************************************** ; * Service defaults may also be specified in individual service sections * ; ************************************************************************** ; Certificate/key is needed in server mode and optional in client mode cert = stunnel.pem ;key = stunnel.pem ; Authentication stuff needs to be configured to prevent MITM attacks ; It is not enabled by default! ;verify = 2 ; Don't forget to c_rehash CApath ;CApath = certs ; It's often easier to use CAfile ;CAfile = certs.pem ; Don't forget to c_rehash CRLpath ;CRLpath = crls ; Alternatively CRLfile can be used ;CRLfile = crls.pem sslVersion = all ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; These options provide additional security at some performance degradation ;options = SINGLE_ECDH_USE ;options = SINGLE_DH_USE ; ************************************************************************** ; * Service definitions (at least one service has to be defined) * ; ************************************************************************** ; The default certificate cert = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Set client mode client = yes ; GMail ssmtp settings [ssmtp] accept = 25 connect = 174.129.0.38:465 ; GMail pop3s settings [pop3s] accept = 110 connect = 174.129.0.38:995 ; GMail imaps settings [imaps] accept = 143 connect = 174.129.0.38:993 ; Example SSL front-end to a web server ;[https] ;accept = 443 ;connect = 80 ; "TIMEOUTclose = 0" is a workaround for a design flaw in Microsoft SSL ; Microsoft implementations do not use SSL close-notify alert and thus ; they are vulnerable to truncation attacks ;TIMEOUTclose = 0 ; vim:ft=dosini

2 1

Error 111 (net::ERR_TUNNEL_CONNECTION_FAILED): Unknown error.
by Mr Nerdy 03 Jan '13

03 Jan '13

Hi. I installed Stunnel to secure the traffic to my HFS web-server at home. Everything works fine except that if I am trying to connect through a firewall (e.g. from work) Chrome shows an error message: Error 111 (net::ERR_TUNNEL_CONNECTION_FAILED): Unknown error.

1 0

Stunnel v4.54 SSL_connect: Peer suddenly disconnected
by Arun Kumar 02 Jan '13

02 Jan '13

Team, I am configuring stunnel for the first time. My Requirement: "NetApp DataFabricManager" application on SLES10 SP4 platform <------ (LDAP over Stunnel) -----> Windows 2003 Active Directory, for Active Directory user authentication. Stunnel.conf: ----------------------------------------------------------- setuid = root setgid = root client = yes debug = 7 output = /root/stunnel.log cert = /opt/crt_key.pem key = /opt/crt_key.pem pid = /var/run/stunnel.pid verify = 3 CAfile = /opt/crt_key.pem options = NO_SSLv2 [ldap] accept = 389 connect = winad1-197-187:636 [ldap-ha] accept = 8389 connect = winad2-197-189:636 ----------------------------------------------------------- ocm5-197-196:~ # dfm ldap list Address Port Last Use Last Failure ------------------------------------------ ------ -------------------------- -------------------------- 127.0.0.1 389 2013-01-02 14:01:52.000000 127.0.0.1 8389 2013-01-02 13:49:35.000000 ocm5-197-196:~ # ocm5-197-196:~ # dfm ldap find user1 Warning: Failed to bind to ldap server '127.0.0.1' as user 'CN=Administrator,CN=Users,DC=<zz>,DC=<xx>,DC=<yy>,DC=com': Can't contact LDAP server Error: Failed to search for user1. ocm5-197-196:~ # NOTE: If i add active directory server IP in the above list, instead of 127.0.0.1, ldap authentication works fine. ocm5-197-196:~ # cat /etc/services ... ..... ........ #### This is a Manual Entry made by root user for AD authentication services & Stunnel Integration ######## ldap-ha 8389/tcp # 2nd LDAP host for DC redundancy [Redirected to 2nd DC by Stunnel, see /etc/stunnel/stunnel.conf] ldap-ha 8389/udp # 2nd LDAP host for DC redundancy [Redirected to 2nd DC by Stunnel, see /etc/stunnel/stunnel.conf] ocm5-197-196:~ # stunnel /root/stunnel-4.54/tools/stunnel.conf stunnel.log: 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Clients allowed=500 2013.01.02 14:00:42 LOG5[7102:47010476379680]: stunnel 4.54 on x86_64-unknown-linux-gnu platform 2013.01.02 14:00:42 LOG5[7102:47010476379680]: Compiled/running with OpenSSL 0.9.8a 11 Oct 2005 2013.01.02 14:00:42 LOG5[7102:47010476379680]: Threading:PTHREAD SSL:+ENGINE Auth:none Sockets:POLL+IPv6 2013.01.02 14:00:42 LOG5[7102:47010476379680]: Reading configuration from file /root/stunnel-4.54/tools/stunnel.conf 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Compression not enabled 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Snagged 64 random bytes from /root/.rnd 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Wrote 1024 new random bytes to /root/.rnd 2013.01.02 14:00:42 LOG7[7102:47010476379680]: PRNG seeded successfully 2013.01.02 14:00:42 LOG6[7102:47010476379680]: Initializing service [ldap] 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Certificate: /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Certificate loaded 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Key file: /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Private key loaded 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Loaded verify certificates from /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Loaded /opt/crt_key.pem revocation lookup file 2013.01.02 14:00:42 LOG7[7102:47010476379680]: SSL options set: 0x01000004 2013.01.02 14:00:42 LOG6[7102:47010476379680]: Initializing service [ldap-ha] 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Certificate: /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Certificate loaded 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Key file: /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Private key loaded 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Loaded verify certificates from /opt/crt_key.pem 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Loaded /opt/crt_key.pem revocation lookup file 2013.01.02 14:00:42 LOG7[7102:47010476379680]: SSL options set: 0x01000004 2013.01.02 14:00:42 LOG5[7102:47010476379680]: Configuration successful 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Service [ldap] (FD=7) bound to 0.0.0.0:389 2013.01.02 14:00:42 LOG7[7102:47010476379680]: Service [ldap-ha] (FD=8) bound to 0.0.0.0:8389 2013.01.02 14:00:42 LOG7[7103:47010476379680]: Created pid file /var/run/stunnel.pid 2013.01.02 14:01:52 LOG7[7103:47010476379680]: Service [ldap] accepted (FD=3) from 127.0.0.1:60332 2013.01.02 14:01:52 LOG7[7103:1073809728]: Service [ldap] started 2013.01.02 14:01:52 LOG5[7103:1073809728]: Service [ldap] accepted connection from 127.0.0.1:60332 2013.01.02 14:01:52 LOG6[7103:1073809728]: connect_blocking: connecting 192.168.10.7:636 2013.01.02 14:01:52 LOG7[7103:1073809728]: connect_blocking: s_poll_wait 192.168.10.7:636: waiting 10 seconds 2013.01.02 14:01:52 LOG5[7103:1073809728]: connect_blocking: connected 192.168.10.7:636 2013.01.02 14:01:52 LOG5[7103:1073809728]: Service [ldap] connected remote server from 192.168.10.1:40664 2013.01.02 14:01:52 LOG7[7103:1073809728]: Remote socket (FD=10) initialized 2013.01.02 14:01:52 LOG7[7103:1073809728]: SSL state (connect): before/connect initialization 2013.01.02 14:01:52 LOG7[7103:1073809728]: SSL state (connect): SSLv3 write client hello A 2013.01.02 14:01:52 LOG3[7103:1073809728]: SSL_connect: Peer suddenly disconnected <------------------ 2013.01.02 14:01:52 LOG5[7103:1073809728]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2013.01.02 14:01:52 LOG7[7103:1073809728]: Remote socket (FD=10) closed 2013.01.02 14:01:52 LOG7[7103:1073809728]: Local socket (FD=3) closed 2013.01.02 14:01:52 LOG7[7103:1073809728]: Service [ldap] finished (0 left) I initially started with stunnel-4.14 available with SLES10 GA OS media. Noticed peer disconnected issue. I went through the stunnel mailing list archive for related issues, but didn't get much help. Finally upgraded stunnel to v4.54 & to no progress. google hits mentioned that its configuration issue / client is not accepting sockets.. but finally no clue how to proceed. Kindly assist "SSL_connect: Peer suddenly disconnected" & SSL handshake work. Warm Regards, Arun UNIX admin

2 3

Looking to confirm that stunnel is encrypting traffic via wireshark
by David Trebacz 31 Dec '12

31 Dec '12

I'm using stunnel to encrypt newsgroup traffic. Essentially use stunnel to encrypt port 119 traffic (from the Pan Newsreader) then securely communicate over 563 with astraweb secure servers. The whole set-up is described in detail in this blog post: http://blog.trebacz.com/2012/03/installing-stunnel-to-enable-ssl.html The system has been "working" for several months, but someone on the blog asked how to confirm it. I checked my logs and each time I'm finished using Pan/Stunnel to download anything I get several entries in my syslog like: stunnel: LOG5[2111:140426048358144]: Connection closed: 3259 byte(s) sent to SSL, 16756212 byte(s) sent to socket I started to wonder does this mean some of the traffic was encrypted, but most wasn't? I fired up wireshark filtered the results to show port 563 traffic ( filter set to tcp.port == 563) as was suggested in another post ( http://ubuntuforums.org/showpost.php?p=5400958&postcount=9) Wireshark does show the traffic is correctly flow through port 563 with astrawebs newsservers when requesting data, but how do I know the traffic is encrypted? I inspected likely packets to contain encrypted data and I don't see anything in plain text (but they're zlib compressed also).

1 0

How to set DSCP in stunnel?
by Death Master 30 Dec '12

30 Dec '12

How to set DSCP in stunnel? For some reasons I can't set DSCP via iptables(server side is on ovz VPS). Is there such feature? If no - please add it(it will be very usefull for me ;) )

3 3

Embedded linux run time problem (starting version 4.53), and work around
by Bao, Robert 28 Dec '12

28 Dec '12

To those running stunnel on Embedded Linux ARMv4 platform, You may have noticed that stunnel (starting from version 4.53 to the latest) will crash immediately even if you run as "stunnel -version". The work around is to remove "-pie" and "-fPIE" from CFLAG in Makefile. Michal, You may fix this problem permanently in config file when you roll out the official 5.00 version. Thanks, and happy holidays. Robert Bao Software House Tyco International

1 0

core dump when running stunnel on Arm based board
by ning ji 21 Dec '12

21 Dec '12

Hi everyone, i'm new to this. got a task to update stunnel from 4.52 to 5.00b1. 1. ./configure --host arm-none-linux-gnueabi --target arm-none-linux-gnueabi --prefix= i compared the makefile with the one in our 4.52 code base, same. 2. build with make -C stunnel CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm 3. scp to ARM board, run without arugments, core dump. (the line number might be different as i was putting printfs. but as long as it enters parse_commandline, it crashes) [New LWP 867]Cannot access memory at address 0x70797263(gdb) bt#0 parse_commandline (name=0xbefdce29 "/opt/ultra/config/stunnel.conf", parameter=0xbefdce48 "-version") at options.c:1940#1 0x0003ba04 in main_configure (arg1=0xbefdce29 "/opt/ultra/config/stunnel.conf", arg2=0xbefdce48 "-version") at stunnel.c:199#2 0x0003bd44 in main_unix (argv=<optimized out>, argc=<optimized out>)at stunnel.c:135#3 main (argc=3, argv=0xbefdcd24) at stunnel.c:110my question is, it crashed when just entering parse_commandline( ),the 2 arguments look fine to me.How could this happen ?Many thanks !

5 11

public domain [PATCH] to stunnel 500b3 for Windows CE / Windows Mobile, "no log window bug" on WCE, UNICODE wce/w32, and compilation issues fixed
by Pierre DELAAGE 18 Dec '12

18 Dec '12

Dear All, Please find enclosed a patch in "diff -cr orig patched" format, applying to stunnel v500b3 as found here https://www.stunnel.org/downloads.html This patch mainly addresses compilation and unicode issues for Windows CE targets + ONE issue preventing stunnel to display error logs in error Window on WCE. This code has been made common to WCE AND W32, by selecting proper win32 api calls common to both platforms. For example : InsertMenuItem does not exist on WCE, but InsertMenu can do the same job. ShellExecute does not exist on WCE, but...ShellExecuteEx does exist on both platforms and can do the job. I use MS EVC 4sp4 compiler with WCE 420 SDK, on a vista sp2 host platform. Once debugged the code works fine on WM6 HTC smartphones. Should work on WM5. It needs a windows CE openssl lib (I recompiled MY patched version of openssl 1.0.2snap20121213 successfully: I have sent a patch to those openssl gentlemen, hoping that they will integrate it one fine day..., something not so obvious ...). You will find my openssl "patch to port", by following carefully this thread at openssl diffusion list : http://marc.info/?l=openssl-dev&m=135574071824906&w=2 two messages are more important than the others : one containing the patch on the code. Another one containing 2 useful scripts. The present stunnel patch addresses the following issues : ************* I] COMPILATION FAILURES It is important to state that to detect more type mismatching (that can be error prone at runtime), I delibarately use /WX option on both WCE and W32 compilers: this flag takes each warning as an error. This is very useful for UNICODE clean coding as, without this option, the compiler will just warn when seeing a short* (unicode string) used as a char* (ansi string), which leads to big pb at run time. 1/ orig/src/client.c just a warning on missing "return". 2/ evc.mak new SSLDIR to openssl V102snap20121213 Missing flag x86 needed to get inline function InterlockedExchange from winbase.h. Added dependency to evc.mak itself, as in vc.mak Added commctrl.lib for CommandBar routines (although, strangely, the program was running without that !) 3/ gui.c : UNICODE port for W32/WCE. WM_WINDOWSPOSCHHANGED replaces WM_SHOWINDOW, as the latter is unsupported in WCE. some mismatch between prototype and function definition for service_install. Visible now is a BOOL, as it is more consistant with its value and usage. Some "return TRUE" have been replaced by "return 0" as stated in msdn doc. Trick to delete menuitems : itemcount does not exist in WCE, but the delete loop is using the return value of deletemenu. message_boxT created for Tchar vars such as section->help ShellExecute replaced by shellExecuteEx, common to WCE and W32 4/ prototypes.h : declared message_boxT 5/ resolver.c : UNICODE issue on LoadLibrary 6/ stunnel.c type cast for time_t 7/ vc.mak : inc32 for openssl includes /WX warning as error flag to see every potential casting problem around UNICODE ************* II] OPERATIONAL ERRORS (at run-time) 1/ error log windows is displayed empty : cause = WM_SHOWWINDOW does not exist on WCE, although the constant is declared ! solution : use WM_WINDOWPOSCHANGED instead... 2/ Unsolved, unfortunaltely : on WCE only, on start, there is an error message, but no real error behind : "CommandBar_InsertMenuBar : error 120 : this function is only valid in win32 mode" I am still searching... ************* III] MINOR IMPROVMENT 1/replaced some win3.1 ugly fonts See resources.rc : some nice FONT on About and Password dlgbox...to replace ugly windows3.1 style bold font... Note : I use stunnel to establish a simple "vpn" between smartphones and a corporate linux server mainly for HTTPS/POPS/SMTPS support. Stunnel is very relevant in that matter, over solutions based on SSH (although we use also ssh), from a communication cost point of view : ssh establishes permanent socket between client and server, so that the communication is charged by the mobile network provider : and these charges are very expensive. On the contrary stunnel only establishes ssl sockets on demand so that financial charges are limited to strict necessary. Please note that stunnel brings "client based certificate authentication" to POP/SMTP mobile mail user agents which only BASICALLY supports SSL with server authentication, but NO client authentication, such as M$ Outlook for Mobile (unless you pay for an exchange server and exchange client licence). Here again stunnel is very relevant. Note 2 : TODO list and Wish list : 1/ there is a remaining runtime bug on WCE : On start there is a warning that is NOT causing any failure in the software. Very difficult to analyse... 2/ find a notepad for WCE... 3/ in log.c...I really it would be good to replace hard coded values for socket errors by symbolic constant. 4/ fips openssl for WCE and then stunnel for WCE... I hope you will find this patch useful. Michal, thank you for your excellent work, Yours sincerely, Pierre Delaage

2 1

WCE 3.0 run-time error, how to work around it?
by Bao, Robert 12 Dec '12

12 Dec '12

Mike, The stunnel version used in our current product is 4.34. It worked well under Windows CE 3.0 and 5.0. However I got run-time error for 5.00 beta version under WCE 3.0 (even though I disabled IPv6, took out winsock2.h/ws2tcpip.h, included winsock.h, defined "struct addrinfo", etc ). The error is: Error detected on SSL (read) file descriptor: Bad protocol option (WSAENOPROTOOPT) (10042) What else I need to do to resolve or work around it? Thank you. Robert Bao Software House Tyco International

2 2

Win CE build errors: main_execute() removed from stunnel.c file? "hwnd" link error.
by Bao, Robert 07 Dec '12

07 Dec '12

Came across another Win CE build issue in the current stunnel 4.54 version. Got link error for main_execute() referenced in nogui.c file. I noticed that the implementation of "main_execute()" was in stunnel.c file in old versions, but is not there anymore. Also got "hwnd" linking issue. Looks like "hwnd" is initialized/created in gui.c file, and used in log.c/client.c/option.c files. It is not initialized/created in nogui.c file. I am using the NOGUIOBJS/tstunnel.exe option in building the stunnel, and got this linking error. Any suggestions on how to fix these or work around them? Thanks. Robert Bao Software House Tyco International 978-577-4202 Explore our new Tyco Online Learning Center Web-based Training Bundles at: www.swhouse.com/support/tyco_online_learning_center.aspx This e-mail may contain or have attached to it information or technology the export or re-export of which is restricted by U.S. laws and regulations. By viewing this e-mail and any attachments, the recipient agrees to the following: (i) the recipients use of the contents of this e-mail and any attachments shall comply with all applicable laws, rules and regulations, including, without limitation, U.S. international trade laws and regulations, and (ii) the recipient may not transfer or otherwise export or re-export any information or technology contained in this e-mail or any attachment except in full compliance with the export controls administered by the U.S. and other countries and any applicable import and use restrictions.

3 12

protocols options clarification
by John A. Wallace 06 Dec '12

06 Dec '12

The Service Level Options of the manual includes the following points: protocol = proto application protocol to negotiate SSL (e.g. starttls or stls) protocol option should not be used with SSL encryption on a separate port. Currently supported protocols: CIFS Connect Etc.. However, in the listed protocols supported neither "starttls" or "stls" appears, even though they appear to be options as far as I can see from the above explanation. Am I missing something here, or should they be among those in the list, and can one use this setting: Protocol=starttls Also, I don't really understand what this statement is telling me: "protocol option should not be used with SSL encryption on a separate port." John A. Wallace

3 2

Re: [stunnel-users] protocols options clarification
by jw72253＠verizon.net 06 Dec '12

06 Dec '12

2 1

how to use My Own Signed Wildcard cert
by robbi3j 05 Dec '12

05 Dec '12

Can anyone help ... have looked through the forums but cannot get this to work I want to configure Stunnel to use my already signed wildcard cert how to I go about importing it ? .. i have the cert file with the private key attached which is password protected can anyone help as its driving me nuts ! -- View this message in context: http://old.nabble.com/how-to-use-My-Own-Signed-Wildcard-cert-tp34756779p347… Sent from the Stunnel - Users mailing list archive at Nabble.com.

3 3

Console-only version for Windows
by Clodo 03 Dec '12

03 Dec '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 There is a binary version of stunnel for Windows WITHOUT the gui, console/terminal only? I have some different problems with the GUI edition: - - Fail to read filename with spaces? - - If is already in execution and i run stunnel.exe with some other parameters, they are ignored and simply give the focus to the current instance, so issue with launching multiple instances. Why there isn't any console-only version, exacly like the standard linux distribution? The Cygwin version works great, but isn't portable, doesn't work without Cygwin environment. There are some big trouble about that, or simply doesn't exists the .mak project file? I'm also available to pay with a donation a build like that. I'm waiting for feedback. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQEVAwUBUKPN8i/ixHrG0m4LAQLxdwf/RF1faK3tksXnl6qm8Bi6HIFaG72tmFMJ LwQuY0gJh7rYDJs3NUQwh4XczMqi+5a8/SRZFojSewI2WfeZgLuXC58iq5nkAULm quaEN5ynjen80RJ7MtGg9weoHcpV1kug5HKJUwYZLU0lp8CvEGNhl8sgGT/bCUS7 gzdfi1d3YohBbEn8XZZgmmUmp1oShY4dh47Sd4vVlzaL3WkxqNIasCJJCwWk7lUz dPuy8XCi6y+Aes1T2SF87GAwvdkr0FbPiN0GcCXGczZxNjOiGNGOwqaHnxDknibr kHoGU/vv1PKWU5AYGiryD/YiUt0nHC/7I7IKU3tFu3smmFR8BTOwKA== =lLyE -----END PGP SIGNATURE-----

4 5

Patch to fix: Wildcard SSL certificates + SNI broken on Firefox
by Stephen Balukoff 29 Nov '12

29 Nov '12

Hello! I noticed that when dealing with wildcard certs in stunnel where an SNI configuration is being used, unless a specific servername context that exactly matches the browser's requested servername is in the stunnel.conf, stunnel responds to the client (web browser in this case) with a SSL_TLSEXT_ERR_ALERT_FATAL. Most browsers fall back to a non-SNI request, at which point, stunnel responds with whatever the master service's certificate is (which, if it's a wildcard cert, just works). However, at least one popularly-used web browser (Firefox) does not do this, and instead returns an error message to the user which they cannot (and should not need to) override to view the site contents. Since it's impractical to list all the possible servernames that can match at wildcard cert, and it's also impractical to expect the Firefox developers to change the behavior of their browser (when they shouldn't have to), and even more impractical to expect all the current users of Firefox to upgrade in a timely manner... I went ahead and wrote a patch for stunnel which instructs it to look for a matching wildcard certificate, if an exactly-matching servername isn't found. I've attached this patch to this message. Beyond fixing the stunnel+wildcard cert+SNI+firefox problem above, the secondary benefits of this patch are: * stunnel now responds immediately with a matching cert in the case of a wildcard cert, thus eliminating that first exchange which results in the SSL_TLSEXT_ERR_ALERT_FATAL error above. For stupid browsers and configurations with keepalive turned off + lots of requests per page and high latency, this should help to significantly improve performance. * stunnel will still choose an exactly matching cert if it's available and configured. (ie. if the browser requests 'subdomain.example.com', and there's a certificate configured in stunnel for 'subdomain.example.com' and another for '*.example.com', stunnel will respond with the ' subdomain.example.com' cert.) * one can now use multiple wildcard certs on a single IP:Port combination thanks to SNI. (Without this patch, you can effectively only use one wildcard cert per IP:Port combination with stunnel.) One note: It's been years since I've written any C code, so can't really vouch for the quality of my patch. I'm hoping at least the maintainers of this project see the utility of the patch I'm providing and write something similar in non-stupid C. Thanks, Stephen -- Stephen Balukoff Blue Box Group, LLC (800)613-4305 x807

1 0

Question : prevent close-nofity alerts from stunnel-server
by bhakta79 29 Nov '12

29 Nov '12

Hello, I was trying MITM on a windows application (which talks to a M$ server). Stunnel was running on my windows xp machine. windows-client-app -> stunnel server ---> stunnel client --> M$ Server What I found is that stunnel server sends close notify alert to the windows client app which causes the client to suspend all further communication (busted windows-client of course!). I tried setting the TimeoutClose option to high values but I always saw the server sending close notify alert (is the timeout close only a client-side parameter?) Is there a way to configure server to not send close notify? stullen logs: 2012.11.28 18:32:12 LOG7[3908:5904]: SSL socket closed on SSL_read 2012.11.28 18:32:12 LOG7[3908:5904]: Sent socket write shutdown 2012.11.28 18:32:12 LOG7[3908:4232]: Socket closed on read 2012.11.28 18:32:12 LOG5[3908:5904]: Connection closed: 901 byte(s) sent to SSL, 38020 byte(s) sent to socket 2012.11.28 18:32:12 LOG7[3908:4232]: Sending close_notify alert 2012.11.28 18:32:12 LOG7[3908:4232]: SSL alert (write): warning: close notify 2012.11.28 18:32:12 LOG6[3908:4232]: SSL_shutdown successfully sent close_notify alert 2012.11.28 18:32:12 LOG7[3908:5904]: Remote socket (FD=356) closed <mailto:[email protected]> I finally ended up making this one line code-change to stop server from sending close alert that helped my MITM progress. src/client.c: if(!(SSL_get_shutdown(c->ssl)&SSL_SENT_SHUTDOWN) && !sock_open_rd && !c->sock_ptr) { s_log(LOG_DEBUG, "BHAKTA - HACK -> Skip Sending close_notify alert"); *! if(0 && SSL_version(c->ssl)!=SSL2_VERSION) { /* SSLv3, TLSv1 */* s_log(LOG_DEBUG, "Sending close_notify alert"); shutdown_wants_write=1; } else { /* no alerts in SSLv2, including the close_notify alert */ s_log(LOG_DEBUG, "Closing SSLv2 socket"); if(c->ssl_rfd->is_socket) shutdown(c->ssl_rfd->fd, SHUT_RD); /* notify the kernel */ if(c->ssl_wfd->is_socket) shutdown(c->ssl_wfd->fd, SHUT_WR); /* send TCP FIN */ /* notify the OpenSSL library */ SSL_set_shutdown(c->ssl, SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); } } Is there a way to prevent server from sending close notify alert by means of stunel.conf parameters? stunnel.conf: debug = 7 output = stunnel.log cert = fakecert.pem key = fakecert.key options = DONT_INSERT_EMPTY_FRAGMENTS socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [https] sslVersion = TLSv1 accept = 0.0.0.0:443 connect = 127.0.0.1:446 [https-client] client = yes sslVersion = TLSv1 accept = 127.0.0.1:446 connect = 172.24.244.11:443 TIMEOUTclose = 300

1 0

Re: [stunnel-users] WinCE link errors
by Bao, Robert 28 Nov '12

28 Nov '12

Brian, You are right. After changing the order, all wcecompatex.lib related link errors are gone! Thanks a lot. Also thank Pierre for dropping me another suggestion. Mike, When you get chance to update next time, you may consider changing this line (in evc.mak): From: LIBS=/NODEFAULTLIB coredll.lib corelibc.lib winsock.lib wcecompatex.lib libeay32.lib ssleay32.lib To: LIBS=/NODEFAULTLIB winsock.lib wcecompatex.lib libeay32.lib ssleay32.lib coredll.lib corelibc.lib Thank you all. Robert From: Brian Wilkins [mailto:[email protected]] Sent: Wednesday, November 28, 2012 5:15 PM To: Bao, Robert Subject: Re: [stunnel-users] WinCE link errors Maybe try changing the link order...? On Nov 28, 2012 5:10 PM, "Bao, Robert" <rbao(a)tycoint.com> wrote: Dear Mike and WinCE stunnel users out there, I am currently in the process of compiling/linking the latest stunnel (4.54) for our ARM and WinCE 5.0 based device. I noticed that this version requires coredll.lib and corelibc.lib in the final link process (defined in the LIBS variable), which the old ones (e.g., version 4.33) didn't. Anyway, I got a lot of linking errors (see below), and just wondering any of you have seen the same errors and how you get around with these errors. If you have any other suggestions please feel free to let me know too. Note: I could resolve the errors at the bottom, but I have trouble get rid of the errors relating to wcecompatex.lib(redir.obj). Thank you for your time. wcecompatex.lib(redir.obj) : error LNK2005: fopen already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fclose already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fread already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fwrite already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _getstdfilex already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _fileno already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fflush already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: feof already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: ferror already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: clearerr already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fseek already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: ftell already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _setmode already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fgets already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fprintf already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : warning LNK4006: fopen already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fclose already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fread already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fwrite already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _getstdfilex already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _fileno already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fflush already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: feof already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: ferror already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: clearerr already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fseek already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: ftell already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _setmode already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fgets already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fprintf already defined in coredll.lib(COREDLL.dll); second definition ignored Creating library ..\bin\ARMV4I\tstunnel.lib and object ..\bin\ARMV4I\tstunnel.exp options.obj : error LNK2001: unresolved external symbol WSAGetLastError network.obj : error LNK2001: unresolved external symbol WSAGetLastError stunnel.obj : error LNK2019: unresolved external symbol WSAGetLastError referenced in function daemon_loop ctx.obj : error LNK2001: unresolved external symbol WSAGetLastError client.obj : error LNK2019: unresolved external symbol WSAGetLastError referenced in function init_remote log.obj : error LNK2001: unresolved external symbol WSAGetLastError client.obj : error LNK2019: unresolved external symbol hwnd referenced in function win_new_chain log.obj : error LNK2019: unresolved external symbol hwnd referenced in function s_strerror options.obj : error LNK2001: unresolved external symbol hwnd log.obj : error LNK2019: unresolved external symbol WSASetLastError referenced in function s_log nogui.obj : error LNK2019: unresolved external symbol main_execute referenced in function main ..\bin\ARMV4I\tstunnel.exe : fatal error LNK1120: 4 unresolved externals NMAKE : fatal error U1077: 'link' : return code '0x460' Robert Bao Software House Tyco International 978-577-4202 Explore our new Tyco Online Learning Center Web-based Training Bundles at: www.swhouse.com/support/tyco_online_learning_center.aspx This e-mail may contain or have attached to it information or technology the export or re-export of which is restricted by U.S. laws and regulations. By viewing this e-mail and any attachments, the recipient agrees to the following: (i) the recipients use of the contents of this e-mail and any attachments shall comply with all applicable laws, rules and regulations, including, without limitation, U.S. international trade laws and regulations, and (ii) the recipient may not transfer or otherwise export or re-export any information or technology contained in this e-mail or any attachment except in full compliance with the export controls administered by the U.S. and other countries and any applicable import and use restrictions. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

1 0

WinCE link errors
by Bao, Robert 28 Nov '12

28 Nov '12

Dear Mike and WinCE stunnel users out there, I am currently in the process of compiling/linking the latest stunnel (4.54) for our ARM and WinCE 5.0 based device. I noticed that this version requires coredll.lib and corelibc.lib in the final link process (defined in the LIBS variable), which the old ones (e.g., version 4.33) didn't. Anyway, I got a lot of linking errors (see below), and just wondering any of you have seen the same errors and how you get around with these errors. If you have any other suggestions please feel free to let me know too. Note: I could resolve the errors at the bottom, but I have trouble get rid of the errors relating to wcecompatex.lib(redir.obj). Thank you for your time. wcecompatex.lib(redir.obj) : error LNK2005: fopen already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fclose already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fread already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fwrite already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _getstdfilex already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _fileno already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fflush already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: feof already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: ferror already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: clearerr already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fseek already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: ftell already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: _setmode already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fgets already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : error LNK2005: fprintf already defined in coredll.lib(COREDLL.dll) wcecompatex.lib(redir.obj) : warning LNK4006: fopen already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fclose already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fread already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fwrite already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _getstdfilex already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _fileno already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fflush already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: feof already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: ferror already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: clearerr already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fseek already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: ftell already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: _setmode already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fgets already defined in coredll.lib(COREDLL.dll); second definition ignored wcecompatex.lib(redir.obj) : warning LNK4006: fprintf already defined in coredll.lib(COREDLL.dll); second definition ignored Creating library ..\bin\ARMV4I\tstunnel.lib and object ..\bin\ARMV4I\tstunnel.exp options.obj : error LNK2001: unresolved external symbol WSAGetLastError network.obj : error LNK2001: unresolved external symbol WSAGetLastError stunnel.obj : error LNK2019: unresolved external symbol WSAGetLastError referenced in function daemon_loop ctx.obj : error LNK2001: unresolved external symbol WSAGetLastError client.obj : error LNK2019: unresolved external symbol WSAGetLastError referenced in function init_remote log.obj : error LNK2001: unresolved external symbol WSAGetLastError client.obj : error LNK2019: unresolved external symbol hwnd referenced in function win_new_chain log.obj : error LNK2019: unresolved external symbol hwnd referenced in function s_strerror options.obj : error LNK2001: unresolved external symbol hwnd log.obj : error LNK2019: unresolved external symbol WSASetLastError referenced in function s_log nogui.obj : error LNK2019: unresolved external symbol main_execute referenced in function main ..\bin\ARMV4I\tstunnel.exe : fatal error LNK1120: 4 unresolved externals NMAKE : fatal error U1077: 'link' : return code '0x460' Robert Bao Software House Tyco International 978-577-4202 Explore our new Tyco Online Learning Center Web-based Training Bundles at: www.swhouse.com/support/tyco_online_learning_center.aspx This e-mail may contain or have attached to it information or technology the export or re-export of which is restricted by U.S. laws and regulations. By viewing this e-mail and any attachments, the recipient agrees to the following: (i) the recipients use of the contents of this e-mail and any attachments shall comply with all applicable laws, rules and regulations, including, without limitation, U.S. international trade laws and regulations, and (ii) the recipient may not transfer or otherwise export or re-export any information or technology contained in this e-mail or any attachment except in full compliance with the export controls administered by the U.S. and other countries and any applicable import and use restrictions.

2 1

equivalent to SSLHonorcipherorder in stunnel?
by Mehdi Bennani 28 Nov '12

28 Nov '12

Hi, I was wondering if there were a flag available in stunnel, that would be the equivalent of the Apache directive 'SSLHonorcipherorder' ? I would like to basically be able to 'force' server preferences, rather then client ones, during cipher negotiation SSL handshake. Thank you, Elextra-

2 1

Max Cookie Size
by Scott McKeown 20 Nov '12

20 Nov '12

Hi All, I was wondering if anyone knows if its possible to pass a 'really' large cookie through STunnel. I've just built the latest version again (output below). However, we have a client that is looking to pass 16Kb (yes I know please don't tell me this is a bad idea a I know this!) via a cookie. Since we are looking to include STunnel in our offerings I was wondering if we could increase or change the maximum allowed size. I have a script that will generate a test cookie of any size that I require to test with but I can only get an 8K cookie to work. Any help would be great. ~Yours, Scott [root@localhost ~]# stunnel -version stunnel 4.54 on x86_64-unknown-linux-gnu platform Compiled/running with OpenSSL 1.0.0-fips 29 Mar 2010 Threading:PTHREAD SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:POLL+IPv6 Global options: debug = daemon.notice pid = /usr/local/var/run/stunnel/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options: ciphers = FIPS (with "fips = yes") ciphers = ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH (with "fips = no") sessionCacheSize = 1000 sessionCacheTimeout = 300 seconds sslVersion = TLSv1 (with "fips = yes") sslVersion = TLSv1 for client, all for server (with "fips = no") stack = 65536 bytes TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none [root@localhost ~]# -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org

2 2

Problem using stunnel on Windows 7
by Hal Hovland 18 Nov '12

18 Nov '12

I've spent days googling this and read everything relevant in the archives. I'm developing a Windows 7 program that connects to a financial trading exchange that expects all communication to be SSL'd. Everything I read said that stunnel is the answer because of ease of installation and use. After a day of abortive attempts to link to the exchange, I decided to create a much simpler test environment involving two Windows 7 computers next to each other here. One, let's call it Riven-II (192.168.1.9), is set up with a simple Listener program that listens on port 8000. From stunnel's viewpoint this will be a server. The second machine, Lightning (192.168.1.158), has a simple Sender program that sends a text message via port 7999 to Riven-II (192.168.1.9:8000) - this will be the Client. In the absence of stunnel, all messages sent from Lightning/Sender appears on the window of Listener. So far so good. I've downloaded and installed the very latest version (4.54) of stunnel on both machines. On installation I entered the same responses to the certificate generating process. On the Server machine, hard wired to a Broadband Router, I configured stunnel.conf as (removing comments for simplicity) debug = 7 output = stunnel.log socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 cert = stunnel.pem key = stunnel.pem options = NO_SSLv2 taskbar=yes [Listener] connect=8000 accept=8001 On the Client machine, connected to the router via wi-fi, we have in stunnel.conf debug = 7 output = stunnel.log cert = stunnel.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 fips=no options = NO_SSLv2 delay=yes taskbar=yes client=yes [sender] accept = 0.0.0.0:7999 (I've tried just 7999 and 192.168.1.158:7999, here. Makes no difference) connect = 192.168.1.9:8001 I've tried many variations with the same result, but the above is where they have ended up. My understanding of this is that stunnel both ends will be intercepting port 8000 on the Server and port 7999 on the Client and presenting/receiving SSL encoded messages across the wire on port 8001. Starting stunnel in the Server (not as a Windows service, although I did try that as well) the following log appears: 2012.11.16 22:34:08 LOG7[3484:6184]: No limit detected for the number of clients 2012.11.16 22:34:08 LOG5[3484:6184]: stunnel 4.54 on x86-pc-msvc-1500 platform 2012.11.16 22:34:08 LOG5[3484:6184]: Compiled/running with OpenSSL 1.0.1c-fips 10 May 2012 2012.11.16 22:34:08 LOG5[3484:6184]: Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 2012.11.16 22:34:08 LOG5[3484:6184]: Reading configuration from file stunnel.conf 2012.11.16 22:34:08 LOG5[3484:6184]: FIPS mode is enabled 2012.11.16 22:34:08 LOG7[3484:6184]: Compression not enabled 2012.11.16 22:34:08 LOG7[3484:6184]: Snagged 64 random bytes from C:/.rnd 2012.11.16 22:34:08 LOG7[3484:6184]: Wrote 1024 new random bytes to C:/.rnd 2012.11.16 22:34:08 LOG7[3484:6184]: PRNG seeded successfully 2012.11.16 22:34:08 LOG6[3484:6184]: Initializing service [Listener] 2012.11.16 22:34:08 LOG7[3484:6184]: Certificate: stunnel.pem 2012.11.16 22:34:08 LOG7[3484:6184]: Certificate loaded 2012.11.16 22:34:08 LOG7[3484:6184]: Key file: stunnel.pem 2012.11.16 22:34:08 LOG7[3484:6184]: Private key loaded 2012.11.16 22:34:08 LOG7[3484:6184]: Could not load DH parameters from stunnel.pem 2012.11.16 22:34:08 LOG7[3484:6184]: Using hardcoded DH parameters 2012.11.16 22:34:08 LOG7[3484:6184]: DH initialized with 2048-bit key 2012.11.16 22:34:08 LOG7[3484:6184]: ECDH initialized with curve prime256v1 2012.11.16 22:34:08 LOG7[3484:6184]: SSL options set: 0x01000004 2012.11.16 22:34:08 LOG5[3484:6184]: Configuration successful 2012.11.16 22:34:08 LOG7[3484:6184]: Service [Listener] (FD=272) bound to 0.0.0.0:8001 On the Client, the log shows: 2012.11.16 22:25:53 LOG7[4184:4948]: No limit detected for the number of clients 2012.11.16 22:25:53 LOG5[4184:4948]: stunnel 4.54 on x86-pc-msvc-1500 platform 2012.11.16 22:25:53 LOG5[4184:4948]: Compiled/running with OpenSSL 1.0.1c-fips 10 May 2012 2012.11.16 22:25:53 LOG5[4184:4948]: Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 2012.11.16 22:25:53 LOG5[4184:4948]: Reading configuration from file stunnel.conf 2012.11.16 22:25:53 LOG5[4184:4948]: FIPS mode is disabled 2012.11.16 22:25:53 LOG7[4184:4948]: Compression not enabled 2012.11.16 22:25:53 LOG7[4184:4948]: Snagged 64 random bytes from C:/.rnd 2012.11.16 22:25:53 LOG7[4184:4948]: Wrote 1024 new random bytes to C:/.rnd 2012.11.16 22:25:53 LOG7[4184:4948]: PRNG seeded successfully 2012.11.16 22:25:53 LOG6[4184:4948]: Initializing service [sender] 2012.11.16 22:25:53 LOG7[4184:4948]: Certificate: stunnel.pem 2012.11.16 22:25:53 LOG7[4184:4948]: Certificate loaded 2012.11.16 22:25:53 LOG7[4184:4948]: Key file: stunnel.pem 2012.11.16 22:25:53 LOG7[4184:4948]: Private key loaded 2012.11.16 22:25:53 LOG7[4184:4948]: SSL options set: 0x01000004 2012.11.16 22:25:53 LOG5[4184:4948]: Configuration successful 2012.11.16 22:25:53 LOG7[4184:4948]: Service [sender] (FD=224) bound to 0.0.0.0:7999 Running the Listener on the Server and Sender on the Client adds nothing to the log, and port sniffers on both machines show traffic between 7999 and 8000 (exactly the same as when stunnel is not running). No sign of the use of port 8001. I'd appreciate any input on this. I'm sure I must be doing something stupid, but I've watched hours of YouTube videos, read many hundreds of web pages, and been through the documentation quite a few times, to no avail. I have a Java based version, running in a JVM in the same Windows machines, that talks perfectly to the exchange using some inbuilt SSL capabilities of an included library, so that should probably eliminate any hardware/router issues? Regards, Hal

4 10

log rotation
by Michael Curran 11 Nov '12

11 Nov '12

Are there any built in stunnel.conf parameters for log rotation? Im looking for windows based -- not logrotate on unix -- thats simple Do I need to use windows third party logrotate tools to make this happen instead?

2 1

High memory usage problem.
by Jeremy Frady 11 Nov '12

11 Nov '12

Thanks for taking the time to read this. We're operating on a low spec system that can not be modified at this point. stunnel was introduced at the last minute, without consideration to resource requirements and now consumes enough ram to cause the kernel to issue OOM exceptions. So in short, we are trying to trade increased CPU usage for less memory usage and have tried setting “sessions” to 3600 to reduce memory pressure, but unfortunately it doesn't last. Our current solution is to cron a restart of stunnel on a regular basis, but would prefer to limit number of threads or number of cache entries or something else altogether similarly gentler. Thanks again for your consideration and assistance in this! If there's any specific information I can give, please let me know. Regards, Jeremy

2 1

How do I re-encrypt ssl traffic with stunel?
by Arsen Zahray 11 Nov '12

11 Nov '12

I'm trying to set up wireshark debugging of ssl traffic by following this article: http://www.webos-internals.org/wiki/Decrypt_SSL_(trusted_man-in-the-middle_t echnique) It lists following stunnel commands to do the job: Listen on local IP and de-SSL traffic to localhost:8080 sudo stunnel -p ps.pem -d 443 -r 8080 Listen on 8080, re-SSL to remote server on 443 sudo stunnel -c -d 8080 -r ps.palmws.com:443 The article seems outdated, and stunnel does not react on these commands anymore. Can anyone provide me with a proper configuration file to do the same?

3 2

FIPS enablement
by Michael Curran 05 Nov '12

05 Nov '12

Hello I think there is a bit of confusion within my company on what stunnel can do in regards to FIPS 140-2 out of the box. I know there are configuration options that can enable or disable FIPS 140-2 mode, but as the man page indicates fips = yes | no Enable or disable FIPS 140-2 mode. This option allows to disable entering FIPS mode if stunnel was compiled with FIPS 140-2 support. default: yesWhich to me says I have to compile stunnel on my own using openssl with fips libraries to build a Stunnel binary that can support FIPS 140-2 compliance -- if I download just the windows or unix binaries and install them -- then I am not going to be 140-2 compliant where I set the config file to yes or no , since the FIPS modules wont be compiled into the binary. I'm just looking for confirmation before I take this back to the rest of my group. Thanks!! Michael Curran

3 2

Re: [stunnel-users] Fw: Using stunnel to add https to a webserver that doesn't have ssl setup
by mkanet＠yahoo.com 02 Nov '12

02 Nov '12

Thanks for the reply. Lots of friendly people on here. I should have probably posted my solution when I figured it out. I was already using a server-based method to handle redirection. However, what I didn't consider is adding a one line exception that distinguishes incoming requests from stunnel on 127.0.0.1 in order to prevent an endless loop. I did this by modifying my IIS URL Rewrite module rule to look like below. URL Rewrite module 2.0 is highly optimized; and is ideal for this kind of thing; works perfect under any circumstance; so long as webpages contain relative elements. Works like a charm. <rewrite> <rules> <rule name="HTTP to HTTPS redirect" stopProcessing="true"> <match url="(.*)" /> <conditions logicalGrouping="MatchAll"> <add input="{HTTPS}" pattern="off" ignoreCase="true" /> <add input="{REMOTE_ADDR}" pattern="127.0.0.1" negate="true" /> </conditions> <action type="Redirect" redirectType="Found" url="https://{HTTP_HOST}/{R:1}" /> </rule> </rules> </rewrite> ----- Forwarded Message ----- On Tue, 30 Oct 2012 15:05:54 -0700 (PDT) <mkanet(a)yahoo.com> wrote: > Thanks. I typically let my webserver handle SSL whenever I can since > it's much easier that way; especially since I know how to handle > http->https urlrewrites that way already; and, plenty of examples on > the web for IIS. The reasons for adding stunnel into the mix in this > scenerio completely outweight not having it at all. I couldn't find > any examples anywhere showing how to handle a simple http to https URL redirect if stunnel is involved; not even in javascript. > Hopefully someone here has the expertise to offer a solution at least in html. The easiest way is to use a server side language as PHP and ASP or CGI/perl (if ISS is capable, that I don't know). If you relay on client (javascript, meta refresh) you can't control the behavior of the client (javascript disabled by user or meta redirects). ISS is capable of PHP and, if you are using it, because you didn't tell, is easy (easy, but I haven't done as I don't know much of PHP (I just played a couple of times with it following tutorials)). With ASP, I don't know, but should be possible too. Here you have an example with PHP: http://www.iis-aid.com/articles/how_to_guides/three_methods_redirect_http_h… or this one: http://stackoverflow.com/questions/5106313/redirecting-from-http-to-https-w… (second message). As I said, you have to do it transparent to the user without relying on them.

1 0

Fw: Using stunnel to add https to a webserver that doesn't have ssl setup
by Michael Avanessian 02 Nov '12

02 Nov '12

Thanks. I typically let my webserver handle SSL whenever I can since it's much easier that way; especially since I know how to handle http->https urlrewrites that way already; and, plenty of examples on the web for IIS. The reasons for adding stunnel into the mix in this scenerio completely outweight not having it at all. I couldn't find any examples anywhere showing how to handle a simple http to https URL redirect if stunnel is involved; not even in javascript. Hopefully someone here has the expertise to offer a solution at least in html. On 30.10.2012 20:39, MKANET wrote > Thanks for the quick reply! So... what http code do I use to break > out the infinite loop so it loads only once? I'm afraid I can't answer that one, as you're using IIS and I'm Unices centered. FWIW, in situations where the port-80 service does *nothing but* hand out redirects to port 443, I typically let the full-blown webserver handle the HTTPS (whether natively or behind an SSL wrapper) and use a boilerplate PERL script (alas, not readily usable on Windows) for the redirecting. I've seen too many kinds of webserver doing redirections to autodetermined URLs that happen to miss some vital part of the originally requested URL, including some that *cause* the browser to drop from HTTPS back to HTTP in the first place. :-S Regards, ----- Forwarded Message ---- Thanks for the quick reply! So... what http code do I use to break out the infinite loop so it loads only once? I think the other 2 circumstances may have something similar happening to them (which are forwarded using the web server instead). If I use the webserver to rewrite the URL, the web browser tries to do something (I can't tell what), then returns the error below: The page isn't redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never complete. > Normally, I could do this a few different ways (provided my webserver > had ssl added to it natively in a normal way) 1. webserver URL Rewrite > plugin 2. webserver redirect plugin > 3: > > For whatever reason, I'm having all sorts of weird issues when > trying the three methods above if I use stunnel for ssl instead of > using the webserver's builtin ssl. Please note that traffic coming out of the stunnel looks - and actually *is* - just as port-80-ish to the actual webserver as native HTTP requests do, so unless you take special measures to break the loop, the webserver will try to (re-)redirect *that, too*. Regards, J. Bern --

2 1

enabling https capability
by John A. Wallace 01 Nov '12

01 Nov '12

Not sure if this is the right place to ask, but I will give it a try because it seems likely that someone here can point me in the right direction if need be. I am not a programmer. I have an application that can make http connections but not https. The connections are made from a Windows command line interface, not a browser. I would like to enable it to make https connections too without having to reinvent the wheel. If there is some way to connect it to an intermediary proxy program that does have built-in support for the https protocol, that would be swell. Is such a thing possible or is there another solution I don't see? Thanks. John

2 1

Fwd: Trying to minimize memory usage for a scenario where we have several long-lived HTTPS connections.
by Jeremy Frady 31 Oct '12

31 Oct '12

Hello all, Thanks for taking the time to read this. We're operating on a low spec system that can not be modified at this point. stunnel was introduced at the last minute, without consideration to resource requirements and now consumes enough ram to cause the kernel to issue OOM exceptions. So in short, we are trying to trade increased CPU usage for less memory usage and have tried setting “sessions” to 3600 to reduce memory pressure, but unfortunately it doesn't last. Our current solution is to cron a restart of stunnel on a regular basis, but would prefer to limit number of threads or number of cache entries or something else altogether similarly gentler. Thanks again for your consideration and assistance in this! Regards, Jeremy

1 0

6 processes + out of memory issues on CentOS 6 stunnel (4.29)
by Todd Rinaldo 31 Oct '12

31 Oct '12

I'm experimenting with using the stunnel that comes with CentOS 6 (4.29). I have a config file that is successfully being used on stunnel version 4.15 on the same host without any issues. My issues: 1. starting stunnel creates 6 processes. I assume this has something to do with libwrap, but I'm not finding much discussion about it by doing a search. I'm also assuming that the binaries are forking after load, so it's not a significant memory expense to do this due to COW. Is this correct? 2. I'm getting 't of memory' (no "ou" in the error) messages from syslog when I do more than one request via chrome to port 2087. The process indicated from the message points to the stunnel process that has ownership of the open ports. A single request to this port doesn't seem to spawn the issue. Can anyone suggest what might be causing this? Upgrading to a newer version of stunnel is possible, but I would prefer to keep the version Red Hat provides so they can be on the hook for CVE issues. My config file follows: ----- cert = /var/cpanel/ssl/cpanel/cpanel.pem chroot = /usr/local/cpanel/var/run/stunnel/ # PID is created inside chroot jail pid = /stunnel.pid setuid = cpanel setgid = cpanel # Service-level configuration [cpanelhttps] accept = 2083 connect = 2082 TIMEOUTclose = 0 [whmhttps] accept = 2087 connect = 2086 TIMEOUTclose = 0 [webmailhttps] accept = 2096 connect = 2095 TIMEOUTclose = 0

1 0

Re: [stunnel-users] Using stunnel to add https to a webserver that doesn't have ssl setup
by Michael Avanessian 30 Oct '12

30 Oct '12

Thanks for the quick reply! So... what http code do I use to break out the infinite loop so it loads only once? I think the other 2 circumstances may have something similar happening to them (which are forwarded using the web server instead). If I use the webserver to rewrite the URL, the web browser tries to do something (I can't tell what), then returns the error below: The page isn't redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never complete. > Normally, I could do this a few different ways (provided my webserver > had ssl added to it natively in a normal way) 1. webserver URL Rewrite > plugin 2. webserver redirect plugin > 3: > > For whatever reason, I'm having all sorts of weird issues when > trying the three methods above if I use stunnel for ssl instead of > using the webserver's builtin ssl. Please note that traffic coming out of the stunnel looks - and actually *is* - just as port-80-ish to the actual webserver as native HTTP requests do, so unless you take special measures to break the loop, the webserver will try to (re-)redirect *that, too*. Regards, J. Bern --

2 1

Using stunnel to add https to a webserver that doesn't have ssl setup
by Michael Avanessian 30 Oct '12

30 Oct '12

Hi there. I appreciate that you guys are all helping each other out. I am brand new to stunnel. Currently, I'm using stunnel to add https to a webserver that doesn't have ssl setup; which works great. I prefer to do that instead of using the webserver's builtin ssl feature. CONFIGURATION: Stunnel.conf includes (which adds ssl to incoming http traffic on port 443) [https] accept = 443 connect = 80 Also, incoming http:80 traffic can also come in; which would bypass stunnel, and go directly to the webserver as http. OBJECTIVE: I am trying to make it so when someone visits: http://mywebsite.com (it forwards automatically to https://mywebsite.com) Normally, I could do this a few different ways (provided my webserver had ssl added to it natively in a normal way) 1. webserver URL Rewrite plugin 2. webserver redirect plugin 3: <meta http-equiv="refresh" content="0; url=https://mywebsite.com"> For whatever reason, I'm having all sorts of weird issues when trying the three methods above if I use stunnel for ssl instead of using the webserver's builtin ssl. The first two methods result in web browser redirect errors, the third method result in an infinite loop reloading the https website. Can someone please tell me what extra accommodation I need to make considering that using stunnel for https can complicate things. I'm using IIS 7.5 as my webserver. I've tried using the the URL rewrite 2.0 mod using the below rule (which works for normal builtin ssl support in the webserver: <rule name="Redirect to HTTPS" stopProcessing="true"> <match url="(.*)" /> <conditions><add input="{HTTPS}" pattern="^OFF$" /> </conditions> </rule> I have also tried the "http redirect" mod; which I can forward to any website except for the one I'm trying to do. Both take me to the https equivalent and give a redirect error. Could someone please be kind enough to tell me what I'm missing? Thanks!

2 1

How upgrade stunnel?
by magali morales 30 Oct '12

30 Oct '12

Hi!! I have installed the version 4.44 of stunnel, haproxy I am currently using 1.4.22. I need to update stunnel most recent version. How do I update stunnel to the latest version? And I want to know How do I uninstall stunnel? I hope you can help me, I thank you in advance!

7 7

TIMEOUTclose exceeded: closing
by Michael Wittig 25 Oct '12

25 Oct '12

Hi, I am using stunnes 4.54, my config looks like this: chroot = /opt/stunnel/jail/ setuid = stunnel setgid = stunnel pid = /stunnel.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 syslog = yes debug = local1.warning fips = no [http] cert = /opt/stunnel/www.crt key = /opt/stunnel/www.key sslVersion = all options = NO_SSLv2 renegotiation = no accept = 192.168.72.10:443 connect = 192.168.71.10:80 TIMEOUTclose = 0 xforwardedfor = yes My log is full with: Oct 25 14:49:33 www stunnel: LOG3[15114:140668359968512]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing Oct 25 14:49:36 www stunnel: LOG3[15114:140668360591104]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing Oct 25 14:50:08 www stunnel: LOG3[15114:140668360812288]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing Oct 25 14:50:13 www stunnel: LOG3[15114:140668360591104]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing The doc suggests to "set to 0 for buggy MSIE" the mailing list tells me "You requested close timeout of 0 seconds and that's exactly what you get." But i still don't understand why this is an error and what can I do to get rid of it? Or is it okay to don't look for errors in the log? Regards, Michael

2 1

some version issue
by Sergey Pimenov 25 Oct '12

25 Oct '12

Hello, I have a little problem, working with stunnel. The problem is: 25 10:50:53 LOG3[2612:1972]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number and the full log: 25 10:50:32 LOG7[2612:2988]: No limit detected for the number of clients 2012.10.25 10:50:32 LOG5[2612:2988]: stunnel 4.53 on x86-pc-mingw32-gnu platform 2012.10.25 10:50:32 LOG5[2612:2988]: Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 2012.10.25 10:50:32 LOG5[2612:2988]: Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 2012.10.25 10:50:32 LOG5[2612:2988]: Reading configuration from file stunnel.conf 2012.10.25 10:50:33 LOG5[2612:2988]: FIPS mode is enabled 2012.10.25 10:50:33 LOG7[2612:2988]: Compression not enabled 2012.10.25 10:50:33 LOG7[2612:2988]: PRNG seeded successfully 2012.10.25 10:50:33 LOG6[2612:2988]: Initializing service section [POS] 2012.10.25 10:50:33 LOG7[2612:2988]: Certificate: C:\Arcus2\SSL\pos3135pem.pem 2012.10.25 10:50:33 LOG7[2612:2988]: Certificate loaded 2012.10.25 10:50:33 LOG7[2612:2988]: Key file: C:\Arcus2\SSL\pos3135key.pem 2012.10.25 10:50:33 LOG7[2612:2988]: Private key loaded 2012.10.25 10:50:33 LOG7[2612:2988]: SSL options set: 0x00000004 2012.10.25 10:50:33 LOG5[2612:2988]: Configuration successful 2012.10.25 10:50:33 LOG7[2612:2988]: Service [POS] (FD=180) bound to 127.0.0.1:9021 2012.10.25 10:50:53 LOG7[2612:2988]: Service [POS] accepted (FD=260) from 127.0.0.1:3645 2012.10.25 10:50:53 LOG7[2612:2988]: Creating a new thread 2012.10.25 10:50:53 LOG7[2612:2988]: New thread created 2012.10.25 10:50:53 LOG7[2612:1972]: Service [POS] started 2012.10.25 10:50:53 LOG5[2612:1972]: Service [POS] accepted connection from 127.0.0.1:3645 2012.10.25 10:50:53 LOG6[2612:1972]: connect_blocking: connecting 217.69.205.63:9021 2012.10.25 10:50:53 LOG7[2612:1972]: connect_blocking: s_poll_wait 217.69.205.63:9021: waiting 10 seconds 2012.10.25 10:50:53 LOG5[2612:1972]: connect_blocking: connected 217.69.205.63:9021 2012.10.25 10:50:53 LOG5[2612:1972]: Service [POS] connected remote server from 213.156.128.147:3646 2012.10.25 10:50:53 LOG7[2612:1972]: Remote socket (FD=284) initialized 2012.10.25 10:50:53 LOG3[2612:1972]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2012.10.25 10:50:53 LOG5[2612:1972]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.10.25 10:50:53 LOG7[2612:1972]: Remote socket (FD=284) closed 2012.10.25 10:50:53 LOG7[2612:1972]: Local socket (FD=260) closed 2012.10.25 10:50:53 LOG7[2612:1972]: Service [POS] finished (0 left) my .conf file is: cert = C:\Arcus2\SSL\pos3135pem.pem key = C:\Arcus2\SSL\pos3135key.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 CAfile = C:\Arcus2\SSL\cacert.pem debug = 7 output = stunnel.log [POS] client = yes accept = 127.0.0.1:9021 connect = xxx.xxx.xxx.xxx:9021 if I change conf file, adding sslVersion = all or sslVersion = SSLv3, I have another error Section POS: sslVersion = TLSv1 is required in FIPS mode Thank your for help, Sergey Pimenov

2 1

Stunnel 4.54 manifest
by John A. Wallace 24 Oct '12

24 Oct '12

Hi, Michal. Good news about the update! I noticed that this version, the one for Windows installation, has many more files in it than the last version. It's no problem, but I was just wondering why the change this time? Thanks. John > -----Original Message----- > From: stunnel-announce-bounces(a)stunnel.org [mailto:stunnel-announce- > bounces(a)stunnel.org] On Behalf Of stunnel-announce-request(a)stunnel.org > Sent: Wednesday, October 10, 2012 5:00 AM > To: stunnel-announce(a)stunnel.org > Subject: stunnel-announce Digest, Vol 48, Issue 1 > > Send stunnel-announce mailing list submissions to > stunnel-announce(a)stunnel.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-announce > or, via email, send a message with subject or body 'help' to > stunnel-announce-request(a)stunnel.org > > You can reach the person managing the list at > stunnel-announce-owner(a)stunnel.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of stunnel-announce digest..." > > > Today's Topics: > > 1. stunnel 4.54 released (Michal Trojnara) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 09 Oct 2012 23:37:41 +0200 > From: Michal Trojnara <Michal.Trojnara(a)mirt.net> > To: stunnel-users(a)stunnel.org, stunnel-announce(a)stunnel.org, > openssl-users(a)openssl.org > Subject: [stunnel-announce] stunnel 4.54 released > Message-ID: <50749925.8030905(a)mirt.net> > Content-Type: text/plain; charset="iso-8859-1" > > Dear Users, > > > I have released version 4.54 of stunnel. The ChangeLog entry: > > > Version 4.54, 2012.10.09, urgency: MEDIUM: > * New Win32 features > - FIPS module updated to version 2.0. > - OpenSSL DLLs updated to version 1.0.1c. > - zlib DLL updated to version 1.2.7. > - Engine DLLs added: 4758cca, aep, atalla, capi, chil, cswift, gmp, > gost, nuron, padlock, sureware, ubsec. > * Other new features > - "session" option renamed to more readable "sessionCacheTimeout". > The old name remains accepted for backward compatibility. > - New service-level "sessionCacheSize" option to control session cache > size. > - New service-level option "reset" to control whether TCP RST flag is > used to indicate errors. The default value is "reset = yes". > - New service-level option "renegotiation" to disable SSL > renegotiation. > This feature is based on a public-domain patch by Janusz Dziemidowicz. > - New FreeBSD socket options: IP_FREEBIND, IP_BINDANY, IPV6_BINDANY > (thx to Janusz Dziemidowicz). > - New parameters to configure TLS v1.1/v1.2 with OpenSSL version 1.0.1 > or higher (thx to Henrik Riomar). > * Bugfixes > - Fixed "Application Failed to Initialize Properly (0xc0150002)" error. > - Fixed missing SSL state debug log entries. > - Fixed a race condition in libwrap code resulting in random stalls > (thx to Andrew Skalski). > - Session cache purged at configuration file reload to reduce memory > leak. > Remaining leak of a few kilobytes per section is yet to be fixed. > - Fixed regression bug in "transparent = destination" functionality > (thx to Stefan Lauterbach). This bug was introduced in stunnel 4.51. > - "transparent = destination" is now a valid endpoint in inetd mode. > - "delay = yes" fixed to work even if specified *after* "connect" > option. > - Multiple "connect" targets fixed to also work with delayed resolver. > - The number of resolver retries of EAI_AGAIN error has been limited > to > 3 in order to prevent infinite loops.. > > > Home page: https://www.stunnel.org/ <http://stunnel.mirt.net/> > Download: https://www.stunnel.org/downloads.html > <ftp://stunnel.mirt.net/stunnel/> > > > SHA-256 hash for stunnel-4.54.tar.gz: > > b7e1b9e63569574dbdabee8af90b8ab88db3fe13dcb1268d59a1408c56e6de7b > > > Best regards, > > Mike > > > -------------- next part -------------- A non-text attachment was > scrubbed... > Name: signature.asc > Type: application/pgp-signature > Size: 196 bytes > Desc: OpenPGP digital signature > URL: <http://www.stunnel.org/pipermail/stunnel- > announce/attachments/20121009/f9eac1e3/attachment-0001.pgp> > > ------------------------------ > > _______________________________________________ > stunnel-announce mailing list > stunnel-announce(a)stunnel.org > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-announce > > > End of stunnel-announce Digest, Vol 48, Issue 1 > ***********************************************

3 6

Re: [stunnel-users] (no subject)
by John 23 Oct '12

23 Oct '12

wrote in message news:... Path: news.gmane.org!not-for-mail From: Leandro Avila <leandro.avila(a)ymail.com> Newsgroups: gmane.network.stunnel.user Subject: Re: Safest suggested client/server stunnel configurations to prevent MITM attacks Date: Mon, 22 Oct 2012 12:50:07 -0700 (PDT) Lines: 52 Approved: news(a)gmane.org Message-ID: <1350935407.72221.YahooMailNeo(a)web111004.mail.gq1.yahoo.com> References: <4B5D7F24543C2E4DB3172B1F82446E56C8473D31(a)CBMBOX1.cloudblock.com> Reply-To: Leandro Avila <leandro.avila(a)ymail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 X-Trace: ger.gmane.org 1350935423 5511 80.91.229.3 (22 Oct 2012 19:50:23 GMT) X-Complaints-To: usenet(a)ger.gmane.org NNTP-Posting-Date: Mon, 22 Oct 2012 19:50:23 +0000 (UTC) To: "Michael K. Avanessian" <michael(a)mka.net>, "stunnel-users(a)stunnel.org" <stunnel-users(a)stunnel.org> Original-X-From: stunnel-users-bounces(a)stunnel.org Mon Oct 22 21:50:30 2012 Return-path: <stunnel-users-bounces(a)stunnel.org> Envelope-to: gnsu-stunnel-users(a)m.gmane.org Original-Received: from linode.mirt.net ([207.192.69.165]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from <stunnel-users-bounces(a)stunnel.org>) id 1TQO15-0006Lq-PI for gnsu-stunnel-users(a)m.gmane.org; Mon, 22 Oct 2012 21:50:28 +0200 Original-Received: from linode.mirt.net (localhost [127.0.0.1]) by linode.mirt.net (Postfix) with ESMTP id E06E11C115; Mon, 22 Oct 2012 21:50:13 +0200 (CEST) X-Original-To: stunnel-users(a)stunnel.org Delivered-To: stunnel-users(a)stunnel.org Original-Received: from nm7-vm0.bullet.mail.ne1.yahoo.com (nm7-vm0.bullet.mail.ne1.yahoo.com [98.138.91.66]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by linode.mirt.net (Postfix) with ESMTPS id 2914F1C0F8 for <stunnel-users(a)stunnel.org>; Mon, 22 Oct 2012 21:50:09 +0200 (CEST) Original-Received: from [98.138.90.52] by nm7.bullet.mail.ne1.yahoo.com with NNFMP; 22 Oct 2012 19:50:08 -0000 Original-Received: from [98.138.89.195] by tm5.bullet.mail.ne1.yahoo.com with NNFMP; 22 Oct 2012 19:50:08 -0000 Original-Received: from [127.0.0.1] by omp1053.mail.ne1.yahoo.com with NNFMP; 22 Oct 2012 19:50:08 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 65068.27023.bm(a)omp1053.mail.ne1.yahoo.com Original-Received: (qmail 75038 invoked by uid 60001); 22 Oct 2012 19:50:07 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ymail.com; s=s1024; t=1350935407; bh=0Y+VdggsIVZOwOr4EaEYksE57qG+K4Xf7m79PQuMl/4=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=uUP64Hu7MIb0ahLEqKeQ2rUov8flXv6sjA7h5DanB+bxl2m8dRHLsiUrFHiPFhWcsNIUGtevpvfsxYifmZPjIMTiOvHyxZPxQo2uXvlAzOZKwPuaNEvXrYVNiwVO0nZjG00eA+Gpo8dJCS50OObUbvjympoIhG60TioBD4rSw5U= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=ymail.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=wx17KKam+BlR2A3orpl30Y8/UU3T1ZQ5cDajNEkq008Ppz1baFHK10kwWYt35qPShDTswy2xduxRIzGN/JTVdE8Vb9hFmfmWPtOkptIRxMf26YV6r/x53AKs8rACXc8tNyJVeczxzNSAE1/iycwLc4Q5lwdUda4qUe8+09gtNa0=; X-YMail-OSG: b3DSDKgVM1mQHP5ZBTfIr3A5W2ZGXp385_N0YTtfmQmY8Tx PSFpP624fQl9zaJm1NcwnCvuFSUunTJ.Q6u_X6ZqnTdr.J_LYAj5IOqyykQ2 l4Al99RB4Au24agY5aySFUQj2AVKVLlThmnaaZKrM2O6i4lQj42kjXE9SjCN Ko1OE8i8SRI1X8s_OszQhSFqPwpJVxJ6a8XwsT.HHRvnjCN5oawxLfeYhi8I Nc497s5NZ3BjLmS2ddO1rE_aDEXfeZZf5G4FssKYeY.CR5XmhczPnRsqEOO0 nYj_KNi6UlLDyqhpRuMqUJYBD.JQXLJzN9IG3zKYBdvkip2LXSMmutoKPT8Z oEEAd3OEom9Rew5fODminUDtopQjgJUGkRl5fJPz2xthop6HA8XuKHCMTM6B d1YYbS_V1c5QklFH6aN6XbAYJRG36RA9gKBGsO2BVZ_5t36738Y3Bff.0ySt 6iW79amGPEIc__mjy0VELbOmQ3WPpHOPdBiH.GuHKGcmpVqApD5u2dHxOWa0 cJzYLcE0Fdfsdr6YOWGOh9jGD.P.St5QItI4sMxAhQ9WROechXtibFdHjrFO _Md3OgU8mIpgCFwIbK4b2K4cyPAiM5Kl1P_uFLQ5HE9uAg_8I64GtaSYyTGM 1aFaD9IVrniBqWo.oWvM2Lp.7TyGddU7.olqsc6MmSljcf4b.Rx5cRTwDw2R Kqc1fDQWPPxDDd1pMa1Nasg27P2qGUEy1DSofVwCgDn9MSKvSGj8- Original-Received: from [134.161.133.36] by web111004.mail.gq1.yahoo.com via HTTP; Mon, 22 Oct 2012 12:50:07 PDT X-Rocket-MIMEInfo: 001.001, Pl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gRnJvbTogTWljaGFlbCBLLiBBdmFuZXNzaWFuIDxtaWNoYWVsQG1rYS5uZXQ.Cj5UbzogInN0dW5uZWwtdXNlcnNAc3R1bm5lbC5vcmciIDxzdHVubmVsLXVzZXJzQHN0dW5uZWwub3JnPiAKPlNlbnQ6IEZyaWRheSwgT2N0b2JlciAxOSwgMjAxMiAxMDo0MSBQTQo.U3ViamVjdDogW3N0dW5uZWwtdXNlcnNdIFNhZmVzdCBzdWdnZXN0ZWQgY2xpZW50L3NlcnZlciBzdHVubmVsIGNvbmZpZ3VyYXRpb25zIHRvIHByZXZlbnQgTUlUTSBhdHRhY2tzCgoBMAEBAQE- X-Mailer: YahooMailWebService/0.8.123.460 In-Reply-To: <4B5D7F24543C2E4DB3172B1F82446E56C8473D31(a)CBMBOX1.cloudblock.com> X-BeenThere: stunnel-users(a)stunnel.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: "public, moderate-volume list - general discussion, problem reports, patches" <stunnel-users.stunnel.org> List-Unsubscribe: <https://www.stunnel.org/cgi-bin/mailman/options/stunnel-users>, <mailto:[email protected]?subject=unsubscribe> List-Archive: <http://www.stunnel.org/pipermail/stunnel-users> List-Post: <mailto:[email protected]> List-Help: <mailto:[email protected]?subject=help> List-Subscribe: <https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users>, <mailto:[email protected]?subject=subscribe> Original-Sender: stunnel-users-bounces(a)stunnel.org Errors-To: stunnel-users-bounces(a)stunnel.org Xref: news.gmane.org gmane.network.stunnel.user:5976 Archived-At: <http://permalink.gmane.org/gmane.network.stunnel.user/5976> Pl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gRnJvbTogTWljaGFlbCBLLiBBdmFu ZXNzaWFuIDxtaWNoYWVsQG1rYS5uZXQ+Cj5UbzogInN0dW5uZWwtdXNlcnNAc3R1bm5lbC5vcmci IDxzdHVubmVsLXVzZXJzQHN0dW5uZWwub3JnPiAKPlNlbnQ6IEZyaWRheSwgT2N0b2JlciAxOSwg MjAxMiAxMDo0MSBQTQo+U3ViamVjdDogW3N0dW5uZWwtdXNlcnNdIFNhZmVzdCBzdWdnZXN0ZWQg Y2xpZW50L3NlcnZlciBzdHVubmVsIGNvbmZpZ3VyYXRpb25zIHRvIHByZXZlbnQgTUlUTSBhdHRh Y2tzCgo+SeKAmW0gY3VycmVudGx5IHR1bm5lbGluZyBTU0ggb3ZlciBTU0wgdXNpbmcgc3R1bm5l bC4KPkkgdGhvdWdodCB0aGF0IHN0dW5uZWxlZCBzc2ggZGF0YSB3YXMgc2FmZS7CoCBIb3dldmVy LCByZWNlbnRseSBJ4oCZdmUgcmVhZCB0aGF0IGlmIGdvaW5nIHRocm91Z2ggYSBzb3BoaXN0aWNh dGVkIGh0dHAvaHR0cHMgcHJveHksIGl04oCZcyBwb3NzaWJsZSB0byBiZSBoYWNrZWQgYnkgYSDi gJxsZWdpdGltYXRl4oCdIG1pdG0gYXR0YWNrIHRvIGZvb2wgYW4gU1NMIGNsaWVudC4KClR1bm5l bGVkIGFuZCBub3QtdHVubmVsZWQgU1NIIGRhdGEgX2lzXyBzYWZlLiBUaGUgU1NIIHByb3RvY29s IGlzIHByZXR0eSBzZWN1cmUgYnkgaXRzZWxmLsKgCgpNeSB1bmRlcnN0YW5kaW5nIGlzIHRoYXQg dG8gcHVsbCBvZmYgdGhlIHR5cGUgb2YgU1NML1RMUyBkYXRhIGluc3BlY3Rpb24gdGhhdCB5b3Ug bWVudGlvbgpodHRwOi8vd3d3LnNvdXJjZWZpcmUuY29tL3NlY3VyaXR5LXRlY2hub2xvZ2llcy9u ZXR3b3JrLXNlY3VyaXR5L3NzbC1lbmNyeXB0aW9uLWRlY3J5cHRpb24KCnRoZXJlIGhhcyB0byBi ZSBzb21lIHdvcmsgZG9uZSBvbiB0aGUgY2xpZW50IHNpZGUgb2YgdGhlIGNvbm5lY3Rpb24uIChJ bnN0YWxsIGEgY3VzdG9tCgpDQSBjZXJ0aWZpY2F0ZSBpbiB0aGUgdHJ1c3RlZCBjZXJ0aWZpY2F0 ZSBzdG9yZSBvZiB0aGUgY2xpZW50IG1hY2hpbmUpCgpTbyBldmVuIGlmIHlvdSB3ZXJlIG9uIHN1 Y2ggYSBuZXR3b3JrLCBhcyBsb25nIGFzIHlvdXIgImF0dGFja2VyIiBkb2VzIG5vdCBoYXZlIGNv bnRyb2wKb2YgeW91ciBtYWNoaW5lLiB0aGUgU1NML1RMUyBwcm90b2NvbCB3aWxsIHByb3RlY3Qg eW91IGJlY2F1c2Ugb2YgdGhlIHdheSBrZXlzIChjZXJ0aWZpY2F0ZXMpCmFyZSB2ZXJpZmllZC4g KE5vdGljZSB0aGUga2V5IHdvcmQgaGVyZSBpcyB2ZXJpZmllZCkKCj7CoAo+SXMgaXQgc3RpbGwg cG9zc2libGUgdG8gY29uZmlndXJlIHN0dW5uZWwgc28gdGhhdCBzc2wgY2Fu4oCZdCBiZSBjb21w cm9taXNlZCBiZXR3ZWVuIGJvdGggZW5kcz8KPsKgCj5J4oCZbSBnb2luZyB0byB0YWtlIGEgd2ls ZCBndWVzcyBoZXJlOyB3aGljaCBJ4oCZbSBzdXJlIEnigJltIHByb2JhYmx5IHdyb25nLsKgIEJ1 dCwgY291bGQgSSBqdXN0IGluc3RhbGwgc3R1bm5lbDsgYW5kLCBsZXQgaXQgY3JlYXRlIGF1dG9t YXRpY2FsbHkgYSBzZWxmLXNpZ25lZCAoc3R1bm5lbC5wZW0pIGNlcnRpZmljYXRlIGZpbGXigKYg dGhlbiBqdXN0IGNvcHkgdGhhdCBmaWxlIHRvIHRoZSBzdHVubmVsIGluc3RhbGwgb24gdGhlIG90 aGVyIGVuZD/CoCBUaGF0IHdheSBib3RoIHNpZGVzIGFyZSBhbHJlYWR5IGF3YXJlIG9mIGVhY2gg b3RoZXLigJlzIHB1YmxpYyBrZXlzOyBhbmQsIHdvdWxkbuKAmXQgYmUgdnVsbmVyYWJsZSBkdXJp bmcgdGhlIGluaXRpYWwgdW5lbmNyeXB0ZWQgaGFuZHNoYWtlPwo+wqAKPknigJltIHN1cmUgSeKA mW0gcHJvYmFibHkgd2F5IG9mZjsgYW5kLCB0aGVyZeKAmXMgbW9yZSBJIG5lZWQgdG8gZG8gaW4g c3R1bm5lbOKAmXMgY29uZmlndXJhdGlvbiB0byBmdXJ0aGVyIGVuc3VyZSB0aGUgU1NMIHdvbuKA mXQgYmUgY29tcHJvbWlzZWQuLiBzdWNoIGFzIHRoZSBzdHVubmVsIOKAnHZlcmlmeeKAnSBzZXR0 aW5nLsKgIEnigJltIG5vdCBzdXJlIHdoaWNoIHNldHRpbmcgdG8gaGF2ZSBpdDsgYW5kLCB3aGF0 IGl0IGFjdHVhbGx5IGRvZXMuCj7CoAo+SeKAmW0gaG9waW5nIHNvbWVvbmUgY291bGQgc2hlZCBz b21lIGxpZ2h0IG9uIHRoaXMgd2l0aCBzaW1wbGUgc3VnZ2VzdGVkIGNsaWVudMOgIHNlcnZlciBj b25maWdzIHRoYXQgd291bGQga2VlcCBzc2wgdW5jb21wcm9taXNlZCBhcyBtdWNoIGFzIHBvc3Np YmxlLgo+wqAKPlRoYW5rcyBpbiBhZHZhbmNlIQoKVGhlIGNvbmZpZ3VyYXRpb24geW91IGFyZSBs b29raW5nIGZvciBzdHVubmVsIGludm9sdmVzIHRoZSB2ZXJpZnkgbGV2ZWwgMyBzZXR0aW5nIG9u IHRoZSBjb25maWcKKFZlcmlmeSBwZWVyIHdpdGggbG9jYWxseSBpbnN0YWxsZWQgY2VydGlmaWNh dGUpCgpQbHVzIHRoZSBrZXkgbWFuYWdlbWVudCBpbnZvbHZlZCB0byBzZXQgdGhhdCB1cC4KClRh a2UgYSBsb29rIGEgdGhpcyBkb2N1bWVudC4gSXQgaXMgYSBsaXR0bGUgb3V0IG9mIGRhdGUuIEJV VCB0aGUgcGFydCBhYm91dCBzZXR0aW5nIHVwIHRoZQpjZXJ0aWZpY2F0ZXMgb24gY2xpZW50IGFu ZCBzZXJ2ZXIgc3RpbGwgYXBwbGllcy4gYW5kIGlzIGEgZ29vZCB3YXkgdG8gc3RhcnQKaHR0cDov L3d3dy5zeW1hbnRlYy5jb20vY29ubmVjdC9hcnRpY2xlcy9yZW1vdGUtZGVza3RvcC1tYW5hZ2Vt ZW50LXNvbHV0aW9uLW1pY3Jvc29mdAoKSG9wZSB0aGlzIGhlbHBzCgoKCkxlYW5kcm8gQXZpbGEK LS0tLS0tLS0tLS0tLS0tLQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpzdHVubmVsLXVzZXJzIG1haWxpbmcgbGlzdApzdHVubmVsLXVzZXJzQHN0dW5uZWwu b3JnCmh0dHBzOi8vd3d3LnN0dW5uZWwub3JnL2NnaS1iaW4vbWFpbG1hbi9saXN0aW5mby9zdHVu bmVsLXVzZXJzCg== ------------------------ In the above data, I do not see any legible information at all. What am I missing?

2 1

Safest suggested client/server stunnel configurations to prevent MITM attacks
by Michael K. Avanessian 22 Oct '12

22 Oct '12

I'm currently tunneling SSH over SSL using stunnel. I thought that stunneled ssh data was safe. However, recently I've read that if going through a sophisticated http/https proxy, it's possible to be hacked by a "legitimate" mitm attack to fool an SSL client. Is it still possible to configure stunnel so that ssl can't be compromised between both ends? I'm going to take a wild guess here; which I'm sure I'm probably wrong. But, could I just install stunnel; and, let it create automatically a self-signed (stunnel.pem) certificate file... then just copy that file to the stunnel install on the other end? That way both sides are already aware of each other's public keys; and, wouldn't be vulnerable during the initial unencrypted handshake? I'm sure I'm probably way off; and, there's more I need to do in stunnel's configuration to further ensure the SSL won't be compromised.. such as the stunnel "verify" setting. I'm not sure which setting to have it; and, what it actually does. I'm hoping someone could shed some light on this with simple suggested client--> server configs that would keep ssl uncompromised as much as possible. Thanks in advance!

3 2

Need help building FIPS capable Stunnel for Windows CE
by Bao, Robert 18 Oct '12

18 Oct '12

I am attempting to build a FIPS-capable Openssl for an XScale processor (ARMV4I) running under Windows CE 5.0 (using openssl-1.0.1c and openssl-fips-2.0.1), that was successful. Then I built the latest Stunnel (just released few days ago) with FIPS option turned on. The build appears to complete successfully. However, at run-time, entering FIPS mode fails and the following messages are produced: error stack: 2D079089 : error:2D079089:FIPS routines:fips_pkey_signature_test:test failure FIPS_mode_set: 2D06B06F: error:2D06B06F:FIPS routines:FIPS_check_incore_fingerprint:fingerprint does not match I have reviewed the build instructions outlined in the OpenSSL FIPS user guide carefully and believe all the build instructions have been adhered to. What needs to be changed for the signature to be properly embedded? Robert Bao Tyco

2 2

Unable to Stop Service - Windows XP SP3 x86
by Thomas Eifert 16 Oct '12

16 Oct '12

I just uninstalled Stunnel version 4.53 and replaced it with 4.54 on my Windows XP SP3 x86 machine. What I generally do is stop the service, uninstall the service, then uninstall Stunnel prior to installing the new version. When I attempted to stop the version 4.53 service via the start menu shortcut, I was unsuccessful; all that happened was that the Stunnel status/log window would launch. This was repeatable. Likewise, when I attempted to stop it from an elevated command prompt using stunnel.exe -stop, the result was the same. I am administrator on this machine. I launched services.msc, and was able to stop it from there without any difficulty. After I installed 4.54, just to see what would happen, I attempted to stop the service again using the same methods. Same result.. I just can't do it in the conventional manner. I checked to ensure that there was only one Stunnel service/process running, and that checks out okay. Not sure if others are seeing this issue, but thought I'd better let someone know about it. Thanks for the new version! Regards, Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

1 0

X-Forwarded-For stunnel 4.54 patch
by Michael Wittig 16 Oct '12

16 Oct '12

Hi, I created the X-Forwarded-For stunnel 4.54 patch: https://gist.github.com/3899818 Could someone else check it? -- Michael

1 0

Client Authentication and CRL Verification
by Jean-Philippe Constant 16 Oct '12

16 Oct '12

Hi, I am using stunnel in server mode with mutual authentication. The PKI used to authenticate my client is the following : root CA -> Intermediate CA -> Client. My stunnel configuration is : CAfile = RootCA.pem CRLfile = IntermediateCACRL.pem verify = 2 RootCA.pem contains the Root CA certificate IntermediateCACRL.pem contains the CRL file of the Intermediate CA The client authentication with client certificate goes well. The problem occurs when a client certificate is revoked. After the Intermediate CA CRL updates, the client certificate is still accepted whereas it should be refused. With the following configuration the revoked certificate is refused : CAfile = IntermediateCA.pem CRLfile = IntermediateCACRL.pem verify = 2 but I would prefer using the first configuration. Everything happens like if stunnel checks the crl only for the CA certificate and not for the whole certification chain. Thank you for your answers, Jean-Philippe Constant

1 0

SSL proxy in Windows - IP Address Issue
by Brian McGinity 16 Oct '12

16 Oct '12

Thank you so much for stunnel. This program is amazing!!!! In Windows, I'd like to move SSL processing out of Apache and into stunnel. Is there a way for Apache to know the client's ip address? - In Windows, "transparent" mode is unavailable - "xforwardedfor" is for smtp and not https connections - "protocol = proxy" is for Haproxy only? Brian

2 3

Asterisk with stunnel
by manjula hettiarachchi 15 Oct '12

15 Oct '12

Hi List I am new to stunnel, Just tried today to send Asterisk SIP request to stunnel client and forward to stunnel-server --> asterisk on another machine. (server ip=x.x.x.x) (client ip=y.y.y.y) Client config: cert=/etc/stunnel/stunnel.pem client=yes pid=/tmp/stunnel.pid debug=7 output=/etc/stunnel/stunnel.log [sip] accept=16380 connect=x.x.x.x:17380 ================================ Server Config: cert=/etc/stunnel/stunnel.pem #client=no pid=/tmp/stunnel.pid debug=7 output=/etc/stunnel/stunel.log [sip-IN] accept=17380 connect=5060 When tried 'telnet localhost 16380 from client machine i could see packets coming to server. However when Asterisk sends a sip request to port 16380, exten => _X.,1,Dial(SIP/${EXTEN}@y.y.y.y:16380,20,rt) i dont see packets forwaded to the server. Pls advise if anyone has used this scenario Best Regards Manjula

2 1

Re: [stunnel-users] stunnel-users Digest, Vol 99, Issue 2
by Scott McKeown 10 Oct '12

10 Oct '12

Hi Michal, Thats great news and thank you for update. I think the 'renegotiation' option will be a great addition. -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org

1 0

stunnel 4.54 released
by Michal Trojnara 09 Oct '12

09 Oct '12

Dear Users, I have released version 4.54 of stunnel. The ChangeLog entry: Version 4.54, 2012.10.09, urgency: MEDIUM: * New Win32 features - FIPS module updated to version 2.0. - OpenSSL DLLs updated to version 1.0.1c. - zlib DLL updated to version 1.2.7. - Engine DLLs added: 4758cca, aep, atalla, capi, chil, cswift, gmp, gost, nuron, padlock, sureware, ubsec. * Other new features - "session" option renamed to more readable "sessionCacheTimeout". The old name remains accepted for backward compatibility. - New service-level "sessionCacheSize" option to control session cache size. - New service-level option "reset" to control whether TCP RST flag is used to indicate errors. The default value is "reset = yes". - New service-level option "renegotiation" to disable SSL renegotiation. This feature is based on a public-domain patch by Janusz Dziemidowicz. - New FreeBSD socket options: IP_FREEBIND, IP_BINDANY, IPV6_BINDANY (thx to Janusz Dziemidowicz). - New parameters to configure TLS v1.1/v1.2 with OpenSSL version 1.0.1 or higher (thx to Henrik Riomar). * Bugfixes - Fixed "Application Failed to Initialize Properly (0xc0150002)" error. - Fixed missing SSL state debug log entries. - Fixed a race condition in libwrap code resulting in random stalls (thx to Andrew Skalski). - Session cache purged at configuration file reload to reduce memory leak. Remaining leak of a few kilobytes per section is yet to be fixed. - Fixed regression bug in "transparent = destination" functionality (thx to Stefan Lauterbach). This bug was introduced in stunnel 4.51. - "transparent = destination" is now a valid endpoint in inetd mode. - "delay = yes" fixed to work even if specified *after* "connect" option. - Multiple "connect" targets fixed to also work with delayed resolver. - The number of resolver retries of EAI_AGAIN error has been limited to 3 in order to prevent infinite loops.. Home page: https://www.stunnel.org/ <http://stunnel.mirt.net/> Download: https://www.stunnel.org/downloads.html <ftp://stunnel.mirt.net/stunnel/> SHA-256 hash for stunnel-4.54.tar.gz: b7e1b9e63569574dbdabee8af90b8ab88db3fe13dcb1268d59a1408c56e6de7b Best regards, Mike

1 0

How to forward client's IP address with stunnel on Windows
by Emmanuel Egensperger 08 Oct '12

08 Oct '12

Dear stunnel's users, I have search on google and try many things on stunnel's configuration to forward ip address, but nothing works ? I have found this option in the FAQ : transparent = source But it seems that it doesn't work on windows ? >Line 22: "transparent = source": Specified option name is not valid here >Server is down Is there any solution to my problem ? Have I done something wrong ? Best regards, Manu Egen

2 1

Timeouts and inetd mode
by Bruce Guenter 28 Sep '12

28 Sep '12

Hi. As far as I can tell, if stunnel is running in "inetd mode", at least TIMEOUTbusy does not work. In particularl, stunnel will never timeout waiting for the SSL handshake to complete. If I'm reading the sources right, this is because the code to set up the SSL session calls SSL_accept before checking for data on stdin, and stdin is never set to non-blocking mode (only newly created sockets and/or pipes are). Would it make sense to set stdin (and stdout) to non-blocking mode when timeouts are enabled? Something in init_local maybe? -- Bruce Guenter <bruce(a)untroubled.org> http://untroubled.org/

1 0

SNI with wildcard certificates
by Gustavo Machado 27 Sep '12

27 Sep '12

Hi, I would like to use SNI in combination with wildcard certificates. I currently have the following configuration: [https] accept = 443 connect = 80 TIMEOUTclose = 0 cert = C:\default.pem key = C:\default.key ;SNI Config ;========== [https_a] sni = https:one.org connect = 80 cert = C:\a.pem key = C:\a.key [https_a_wc] sni = https:*.one.org connect = 80 cert = C:\b.pem key = C:\b.key If I go to https://one.org then I can see a.pem in the browser. If I go to https://mysubdomain.one.org I see default.pem. What am I missing?? Thanks! Gustavo

2 1

Chain pem files
by Gustavo Machado 27 Sep '12

27 Sep '12

Hi guys, Sorry for the newbie question, but I have the following configuration for an HTTPS endpoint: [https_one] sni = https:one.org connect = 44300 cert = D:\node\https\default.crt key = D:\node\https\default.key It works wonders, however I need to provide to this configuration two more .pem files for "chain". How would go about doing that? Thanks, Gustavo

1 1

Stunnel build with openssl 1.0+
by Gustavo Machado 27 Sep '12

27 Sep '12

Hi guys, I would like to use SNI and looks like I need a build with openssl 1.0+ Can you guys point me to a download link to the installer for that build? Thanks, Gustavo

2 2

(no subject)
by larisaka＠yahoo.com 25 Sep '12

25 Sep '12

http://www.steam-n-gleam.com/wp-content/plugins/bookingbug/google.html?fs=z…

1 0

Stunnel blocks booting process when no network connectivity
by Muschi Stevenson 25 Sep '12

25 Sep '12

My stunnel implementation works fine when the network is plugged in but it does not start at all, which stops the whole boot process, when there is no network connected on the machine (as a client). As extra information: - I'm using "delay=yes" - I'm using an fqdn (e.g: stunnel.mydomain.com) for the connections - Using stunnel 4.53 - Using ubuntu 12.04 but this also happened with centos5 previously however after some time it did boot on centos which doesn't happen in ubuntu How can this be avoided or a timeout specified? Doing an strace as suggested by symcbean shows the following (including the last part where it hangs): [...] --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 0 close(3) = 0 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6039 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff9ce0c79d0) = 6046 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046 --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 6046 write(1, "[Started: /etc/stunnel/stunnel.c"..., 37) = 37 write(1, "stunnel.\n", 9) = 9 exit_group(0) = ? [...] stunnel hangs in this line: wait4(-1, and when i plug in the network cable it continues to show [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046 Any help would be appreciated as this is critically blocking our deployment http://serverfault.com/questions/429072/stunnel-delaying-boot

2 6

[patch] options-related-to-TLS-v1.1-v1.2
by Henrik Riomar 21 Sep '12

21 Sep '12

Hi, When building stunnel against OpenSSL 1.0.1 support for TLS v1.1/v1.2 gets included. This patch adds options to configure these protocols in stunnel.conf. The patch is against 4.53 and under public domain. Best Regards, Henrik

2 3

"Broken pipe" issue
by Kai M. Becker 20 Sep '12

20 Sep '12

Hi :) although several postings state that this issue has been fixed, I'm still getting this error message: Error detected on SSL (read) file descriptor: Broken pipe (32) OS: OpenSuSE 11.4 stunnel: 4.53 The original problem for taking a closer look though, are hanging incoming connections. I.e. a https request is not forwarded to the backend application, but hangs somewhere in limbo. My current workaround are TIMEOUT* settings to kill these connections. Does anyone have some suggestions how to solve these issues? Kai -- == Kai M. Becker == kmb(a)kai-m-becker.de == Bremen, Germany == "Any technology distinguishable from magic is insufficiently advanced"

2 2

SSL renegotiation patch
by Janusz Dziemidowicz 19 Sep '12

19 Sep '12

Hi, since I couldn't find a better place I'm sending a simple patch that allows to disable SSL renegotiation here. Possible reasons for this: - famous renegotiation SSL flaw, patched in OpenSSL a long time ago, but not everyone can or want to upgrade OpenSSL - renegotiation makes some DoS attacks much easier (see http://www.thc.org/thc-ssl-dos/) regardless of it being a secure one or not - it is really not needed in many cases The approach is based on what is being done in Apache. The default is to allow renegotation, so there should be no surprises for anyone after upgrade. Patch applies on latest (4.54b4) stunnel beta. Feel free to comment:) -- Janusz Dziemidowicz

3 13

Re: [stunnel-users] Binding to non-local sockets
by Janusz Dziemidowicz 19 Sep '12

19 Sep '12

2012/9/12 Willy Tarreau <w(a)1wt.eu>: > Janusz, > > I just saw your mail on stunnel-users. You don't need to use IP_FREEBIND > to bind to a non-existent address under Linux. You can simply enable > sys.net.ipv4.ip_nonlocal_bind to do this. This is how most users deal > with VRRP setups. It does not allow the backup server to receive the > traffic aimed at the missing address, but it allows the process to bind > even when the address is missing so that it becomes operational upon a > switchover. I am aware of this sysctl. However, this will allows any process on the system to bind to any address. In my case I prefer to enable this on per process basis to avoid any possible configuration errors in any other service running on my machines. Since stunnel already had low level socket options exposed I've simply added IP_FREEBIND to the list;) -- Janusz Dziemidowicz

1 0

Re: [stunnel-users] Trouble with smtp client connection and TLS inWindows
by David Schomaker 13 Sep '12

13 Sep '12

Adding "protocol = smtp" was the solution to my problem. Thank you Leonardo! Regards, David Schomaker ----- Original Message ----- From: "Leandro Avila" <leandro.avila(a)ymail.com> To: "David Schomaker" <david(a)schomaker.net>, "stunnel" <stunnel-users(a)stunnel.org> Date: Thu, 13 Sep 2012 09:26:00 -0700 Subject: Re: [stunnel-users] Trouble with smtp client connection and TLS inWindows David, Perhaps the issue is on the server side. A quick look to the SMTP server on smtp.smarshmail.com will show 220 smtp.smarshmail.com ESMTP Service is ready on Server 1 (EQ). EHLO 250-smtp.smarshmail.com Hello [123.456.790.101] 250-SIZE 36700160 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-AUTH GSSAPI NTLM 250-8BITMIME 250-BINARYMIME 250 CHUNKING QUIT 221 2.0.0 Service closing transmission channel I would try adding the following option to your stunnel configuration protocol = smtp I'm not certain but looks like you need to issue the STARTTLS to negociate the secure connection with this server. Check the stunnel manual for further explanation on the option http://www.stunnel.org/static/stunnel.html Hope this helps ----------------- Leandro Avila ----- Original Message ----- From: David Schomaker <david(a)schomaker.net> To: stunnel <stunnel-users(a)stunnel.org> Cc: Sent: Monday, September 10, 2012 10:32 PM Subject: [stunnel-users] Trouble with smtp client connection and TLS in Windows I need to configure stunnel to connect to smtp via TLS and am not able to get it to work either running 4.53 or 4.54beta. Perhaps I have the conf file created incorrectly. The stunnel.conf is as follows: +++++++++++++++++++++++++++++++++++++++ ; Debugging stuff (may useful for troubleshooting) debug = 7 output = c:\temp\stunnel.log ; Disable FIPS mode to allow non-approved protocols and algorithms ;fips = no ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 [SMARSH-pop3] client = yes accept = 127.0.0.1:110 connect = pop.smarshmail.com:995 [SMARSH-smtp] client = yes SSLversion=TLSv1 accept = 127.0.0.1:25 connect = smtp.smarshmail.com:587 +++++++++++++++++++++++++ Pop works great. The log on an smtp session is as follows: +++++++++++++++++++++++++ 2012.09.10 12:48:31 LOG7[1984:300]: Service [SMARSH-smtp] accepted (FD=508) from 127.0.0.1:49517 2012.09.10 12:48:31 LOG7[1984:300]: Creating a new thread 2012.09.10 12:48:31 LOG7[1984:300]: New thread created 2012.09.10 12:48:31 LOG7[1984:2796]: Service [SMARSH-smtp] started 2012.09.10 12:48:31 LOG5[1984:2796]: Service [SMARSH-smtp] accepted connection from 127.0.0.1:49517 2012.09.10 12:48:31 LOG6[1984:2796]: connect_blocking: connecting 199.47.168.58:587 2012.09.10 12:48:31 LOG7[1984:2796]: connect_blocking: s_poll_wait 199.47.168.58:587: waiting 10 seconds 2012.09.10 12:48:31 LOG5[1984:2796]: connect_blocking: connected 199.47.168.58:587 2012.09.10 12:48:31 LOG5[1984:2796]: Service [SMARSH-smtp] connected remote server from 192.168.108.158:49518 2012.09.10 12:48:31 LOG7[1984:2796]: Remote socket (FD=528) initialized 2012.09.10 12:48:31 LOG7[1984:2796]: SNI: host name: smtp.smarshmail.com 2012.09.10 12:48:31 LOG7[1984:2796]: SSL state (connect): before/connect initialization 2012.09.10 12:48:31 LOG7[1984:2796]: SSL state (connect): SSLv3 write client hello A 2012.09.10 12:48:31 LOG7[1984:2796]: SSL alert (write): fatal: protocol version 2012.09.10 12:48:31 LOG3[1984:2796]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2012.09.10 12:48:31 LOG5[1984:2796]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.09.10 12:48:31 LOG7[1984:2796]: Remote socket (FD=528) closed 2012.09.10 12:48:31 LOG7[1984:2796]: Local socket (FD=508) closed 2012.09.10 12:48:31 LOG7[1984:2796]: Service [SMARSH-smtp] finished (0 left) 2012.09.10 12:48:40 LOG7[1984:300]: Dispatching signals from the signal pipe 2012.09.10 12:48:43 LOG7[1984:300]: Processing SIGNAL_TERMINATE 2012.09.10 12:48:43 LOG5[1984:300]: Terminated ++++++++++++++++++++++++++ Is sTunnel using SSLv3 rather than TLSv1? If so how do I force TLS? Thanks... _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

1 0

Trouble with smtp client connection and TLS in Windows
by David Schomaker 13 Sep '12

13 Sep '12

I need to configure stunnel to connect to smtp via TLS and am not able to get it to work either running 4.53 or 4.54beta. Perhaps I have the conf file created incorrectly. The stunnel.conf is as follows: +++++++++++++++++++++++++++++++++++++++ ; Debugging stuff (may useful for troubleshooting) debug = 7 output = c:\temp\stunnel.log ; Disable FIPS mode to allow non-approved protocols and algorithms ;fips = no ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 [SMARSH-pop3] client = yes accept = 127.0.0.1:110 connect = pop.smarshmail.com:995 [SMARSH-smtp] client = yes SSLversion=TLSv1 accept = 127.0.0.1:25 connect = smtp.smarshmail.com:587 +++++++++++++++++++++++++ Pop works great. The log on an smtp session is as follows: +++++++++++++++++++++++++ 2012.09.10 12:48:31 LOG7[1984:300]: Service [SMARSH-smtp] accepted (FD=508) from 127.0.0.1:49517 2012.09.10 12:48:31 LOG7[1984:300]: Creating a new thread 2012.09.10 12:48:31 LOG7[1984:300]: New thread created 2012.09.10 12:48:31 LOG7[1984:2796]: Service [SMARSH-smtp] started 2012.09.10 12:48:31 LOG5[1984:2796]: Service [SMARSH-smtp] accepted connection from 127.0.0.1:49517 2012.09.10 12:48:31 LOG6[1984:2796]: connect_blocking: connecting 199.47.168.58:587 2012.09.10 12:48:31 LOG7[1984:2796]: connect_blocking: s_poll_wait 199.47.168.58:587: waiting 10 seconds 2012.09.10 12:48:31 LOG5[1984:2796]: connect_blocking: connected 199.47.168.58:587 2012.09.10 12:48:31 LOG5[1984:2796]: Service [SMARSH-smtp] connected remote server from 192.168.108.158:49518 2012.09.10 12:48:31 LOG7[1984:2796]: Remote socket (FD=528) initialized 2012.09.10 12:48:31 LOG7[1984:2796]: SNI: host name: smtp.smarshmail.com 2012.09.10 12:48:31 LOG7[1984:2796]: SSL state (connect): before/connect initialization 2012.09.10 12:48:31 LOG7[1984:2796]: SSL state (connect): SSLv3 write client hello A 2012.09.10 12:48:31 LOG7[1984:2796]: SSL alert (write): fatal: protocol version 2012.09.10 12:48:31 LOG3[1984:2796]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2012.09.10 12:48:31 LOG5[1984:2796]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.09.10 12:48:31 LOG7[1984:2796]: Remote socket (FD=528) closed 2012.09.10 12:48:31 LOG7[1984:2796]: Local socket (FD=508) closed 2012.09.10 12:48:31 LOG7[1984:2796]: Service [SMARSH-smtp] finished (0 left) 2012.09.10 12:48:40 LOG7[1984:300]: Dispatching signals from the signal pipe 2012.09.10 12:48:43 LOG7[1984:300]: Processing SIGNAL_TERMINATE 2012.09.10 12:48:43 LOG5[1984:300]: Terminated ++++++++++++++++++++++++++ Is sTunnel using SSLv3 rather than TLSv1? If so how do I force TLS? Thanks...

2 1

Stunnel message
by Philip Wong 13 Sep '12

13 Sep '12

Hi all, I'm still learning stunnel for my company support. l feel difficult to understand what's the meaning of some stunnel log message. Is there any doc listed the log messages with some explanation? Thanks, Philip

1 0

stunnel conf alternatives
by John A. Wallace 11 Sep '12

11 Sep '12

I have stunnel 4.53 on x86-pc-mingw32-gnu platform on Win7 OS. I use it minimally at this point but I would like to see whether I can expand my use of it if possible. When I installed it, I simply saved all the program's files into one folder without actually using the Windows installer program, and then I made some entries in the "stunnel.conf" to make it serve my purpose. Right now to start the program I can go to a Windows command prompt in the stunnel folder and type "stunnel stunnel.conf". Then a little icon appears in the notification area of Windows Taskbar. What would happen, I mean how would it differ, if I just typed "stunnel" instead of having to specify the "stunnel.conf" file too? And how would I be able to make use of it in that case? Thanks.

2 1

Binding to non-local sockets
by Janusz Dziemidowicz 09 Sep '12

09 Sep '12

Hi, attached is very simple patch that allows to set IP_FREEBIND under Linux (IP_BINDANY/IPV6_BINDANY under FreeBSD) on an accept socket. I've stumbled upon this need due to the following situation (which I believe might be quite common): - I've already had stunnel instance happily serving one website on port 443, single domain - a need occurred to set up another domain - SNI cannot be used, because Windows XP doesn't support it (and it is still a very large user base) - no problem, I thought, I have a few public IPs available, just set stunnel up on another IP - and here comes the problem, I have two frontend servers with VRRP configured to migrate public IP between them, only one server has the public IP at a time - under normal circumstances it is impossible to bind to an address that does not exist on the server (in case of one domain I've simply bound stunnel to 0.0.0.0) - starting stunnel manually when the address migrates is not an option (VRRP daemon probably can start it, but I was not happy with that solution, I want all services working constantly on both servers so there are no surprises in case of a failover) - setting IP_FREEBIND on accept socket solves the problem, stunnel is working on both machines and I can migrate the public IPs however I want As stunnel already exposes low level socket options, adding support for IP_FREEBIND is very simple. I've also added similar FreeBSD options (tested on FreeBSD 9.0). Oh, and the patch is public domain;) -- Janusz Dziemidowicz

1 0

SSL3_GET_RECORD:wrong version number
by Bob Tentinger 06 Sep '12

06 Sep '12

I have a POS application (SWIFTLINK) that uses Stunnel to send email on Windows XP. This is the error**************** SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number ***************** I have searched the Internet and none of the resolutions help.

2 1

Race condition in libwrap_auth can hang threads waiting on libwrap process
by Andrew Skalski 05 Sep '12

05 Sep '12

I ran into an issue with stunnel (verified with the latest version) where under certain conditions, client connections will hang in the "Waiting for a libwrap process" state. The problem is a race condition in src/libwrap.c: 170 --num_busy; /* the child process has been released */ 171 if(num_busy==num_processes-1) { /* need to wake up a thread */ 172 retval=pthread_cond_signal(&cond); /* signal waiting threads */ 173 if(retval) { 174 errno=retval; 175 ioerror("pthread_cond_signal"); 176 longjmp(c->err, 1); 177 } 178 } Removing the statement "if (num_busy==num_processes-1)" is one way to fix the problem. The conditions under which the race condition occur are: - All libwrap processes are busy, and multiple threads are waiting [num_busy == num_processes] - One thread releases its libwrap process (this signals one of the waiting threads) - Another thread releases its libwrap process before the signaled thread has a chance to acquire and increment num_busy. Once that happens, all queued threads are stuck waiting on the condition variable, until stunnel is hit with enough concurrent connections to max out num_busy again. (Depending on traffic patterns, this may not happen for a long time.) Andy Skalski

2 1

transpartent=destination setting fails with runtime error
by Stefan Lauterbach 03 Sep '12

03 Sep '12

*In the latest versions of stunnel including stunnel-4.54b8, activating the option for transparent destination with transparent=destination fails. The following error is found in the log with this configuration (tested on CentOS 6.2 and 6.3): INTERNAL ERROR: No target for remote socket This bug seems to be introduced with version 4.51 by rewriting the code and introducing additional sanity checks for the configuration. The following patch seems to resolve the problem: --- src/client.c.~1~ 2012-03-05 12:11:06.000000000 +0100 +++ src/client.c 2012-08-27 00:29:36.000000000 +0200 @@ -303,7 +303,7 @@ c->bind_addr=NULL; /* don't bind */ /* setup c->remote_fd, now */ - if(c->opt->option.remote) { /* try remote first for exec+connect targets */ + if(c->opt->option.remote || c->opt->option.transparent_dst) { /* try remote first for exec+connect targets */ c->remote_fd.fd=connect_remote(c); } else if(c->opt->option.program) { /* exec+connect uses local fd */ c->remote_fd.fd=connect_local(c); *

1 0

MySQL replication + SSL/stunnel
by Gareth Evans 27 Aug '12

27 Aug '12

Hello, I'm failing miserably to implement replication over any kind of SSL (that is, MySQL's native (alleged) SSL support) or stunnel. I'd be grateful for any tips or advice. I have tried using OpenSSL and MySQL in various flavours: CentOS 6.2, OpenSSL v1.0.0, MySQL v5.1.63 Ubuntu 12.04, OpenSSL v1.0.1, MySQL v 5.5.24 and stunnel4 on both - certs created with OpenSSL in each case. I get an eror 1045 access denied from the MySQL native SSL approach, and mysql -u ejbkslave -pejbkslavepw -h127.0.0.1 -P3307 ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 104 from stunnel (connecting two Ubuntu 12.04 VM's on my PC, with the latest updates) - if you know what causes this error and/or could point me towards some good documentation, I'd be grateful. I've copied and amended stunnel.conf-sample and just added debug and accept/connect info in each case. I've seen various reports around the web that OpenSSL+MySQL don't work together at the moment, but it seems some people can repicate the problem while others can't - I've tried the previous version of OpenSSL (1.0.0e on Ubuntu) still without success. Most frustrating!! Thanks Gareth

2 1

Stunnel performance about multiple session
by Yuqiong Sun 27 Aug '12

27 Aug '12

Hi, I am using stunnel as an encrypted channel between one server and multiple clients. Each client will transfer a very small piece of data every 20 seconds. Therefore I want to compare the tradeoff between maintaining multiple sessions with tearing down and re-establish connection every time. I read the performance table in stunnel doc and got a brief idea, but I hope to evaluate the performance for my specific hardware and software setup to make a better decision. I guess my question is how to measure the Max. concurrent sessions? Should I start multiple stunnel instances on client side? Also, how can I tear down a connection automatically after each time data transfer? Thanks Yuqiong

2 1

Behavior
by Javier 17 Aug '12

17 Aug '12

Hi, I want to report 2 different behaviors, one, related to logs and, the other, to close delay. - About the logs, there is a funny thing. If you reload stunnel.conf the log style and amount of information differs from the starting one. I'm under Windows 2000 and these are the general options in stunnel.conf: debug = debug delay = yes output = stunnel.log fips = no The differences can be seen in the attached text file. First part is how is being seen if you don't reload the conf file. The second, after you reload. I, by myself, prefer the second log style. - About the close delay, I don't know when it started to happen (maybe in the version you removed the multiple instance of stunnel or maybe later), but what happens is that stunnel delays about 1-2 seconds to close. It didn't happen before. It was immediately. And has nothing to do with how many services you have, it delays with one service or ten services or… whatever. My system specs, the same as above. But it happens in Windows XP as well, and with the latest 4.54 beta too (the one that has removed the annoying app error (thank you so much for this :-) )). Have a look to them ;-) and confirm if possible :-) Thanks.

1 0

Stunnel high memory usage?
by Matt Wise 16 Aug '12

16 Aug '12

We use Stunnel 4.5.2 in our environment of Ubuntu 10.04/12.04 systems in various clouds. We're leveraging PGPool for SSL encryption of a lot of different types of traffic ... Zookeeper, Postgresql, and AMQP traffic are some examples for us. Mostly everything works great .. its fast, and very reliable. I've just noticed though that on a particular group of machines we are seeing really high memory usage on the Stunnel process that seems to grow and grow over time. I found this Stunnel process using over 350MB of ram yesterday ... and on an m1.small in Amazon, thats a big chunk! Here's our client config file: > cert = /etc/stunnel/localhost-pgpool.pem > key = /etc/stunnel/localhost-pgpool.key > CAfile = /etc/stunnel/localhost-pgpool_ca.pem > verify = 2 > delay = no > sslVersion = TLSv1 > client = yes > setuid = stunnel4 > setgid = stunnel4 > pid = /var/lib/stunnel4/localhost-pgpool.stunnel4.pid > socket = l:TCP_NODELAY=1 > socket = r:TCP_NODELAY=1 > TIMEOUTconnect = 2 > session = 86400 > debug = 4 > [localhost-pgpool] > accept = 127.0.0.1:5001 > failover = rr > connect = prod-pgpool1-uswest1:6433 > connect = prod-pgpool2-uswest1:6433 My first thought was that perhaps the Session cache was too large... so I dropped it to '3600'. Now instead of 360MB, I'm seeing Stunnel sit at around 170MB. Is the session ID cache just caching thousands and thousands of new session IDs without properly re-using them? It seems like the session ID cache should never have more than: Currently_Used_Session_IDs + Session_IDs_unused_but_last_used_within_the_last_hour Any thoughts on what might be going on? --Matt

1 0

Application Failed to Initialize Properly (0xc0150002)
by Thomas Eifert 09 Aug '12

09 Aug '12

New problem here. Stunnel version 4.53. I just did a fresh install of Windows XP Pro x86 SP3, and did all the Windows updates as well. Whenever I try to launch Stunnel or install the service, I get the error: "Application Failed to Initialize Properly (0xc0150002)" I've never seen this before. I thought it might have something to do with not having the Visual C++ Redistributables, so I installed those too, with the same result. Has anyone else seen this issue? Regards, Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

3 4

Stunnel waits for a long time if client does not negotiate SSL
by Denis Solovyov 09 Aug '12

09 Aug '12

Hello, I use stunnel 4.53 to provide pop3s for existing pop3 service. I start stunnel from xinetd, and then exec pop3 utility from stunnel. If a legal pop3s client connects to a server, everything's fine. But if I try to do "telnet host 995" with a simple telnet client and then just do nothing (or even close telnet client without quitting) stunnel process keeps waiting for a very long time (actually maybe forever, I just kill it). The last line in log in such case "Service [stunnel] accepted connection from xx.xx.xx.xx:xxxx". No stunnel TIMEOUT* options have effect in this situation. What can I do to avoid such "waiting"? Maybe stunnel should have something like "SSL negotiation timeout"? Or is there a way to emulate it? (Analyzing `ps` or `netstat` is a bad idea of course.) With the best regards, Denis Solovyov

2 3

Re: [stunnel-users] Application Failed to Initialize Properly (0xc0150002)
by Generic Poster 08 Aug '12

08 Aug '12

Hi Thomas, I have the exact same error when trying to run stunnel on a virtual XP machine under windows 7. I asked here and the only reply I got was that it sounded like a configuration problem. I have tried everything I can think of, but to no avail. I just gave up trying in the end. Wednesday, August 8, 2012, 2:20:43 AM, you wrote: > New problem here. Stunnel version 4.53. > I just did a fresh install of Windows XP Pro x86 SP3, and did all the > Windows updates as well. > Whenever I try to launch Stunnel or install the service, I get the error: > "Application Failed to Initialize Properly (0xc0150002)" > I've never seen this before. I thought it might have something to do > with not having the Visual C++ Redistributables, so I installed those too, > with the same result. > Has anyone else seen this issue? > Regards, > Thomas -- Best regards, GP

2 1

Getting Stunnel to Work Under Windows 7 64-bit
by Hacker, Dietmar 06 Aug '12

06 Aug '12

Some thoughts about a thread from may: Stunnel works ok under Windows7 64bit. But: There are some windows7-specific security restraints one should be aware of: Windows7 does not allow programs to have write-access to c:\program files and c:\program files (x86) (win7 64bit). You can find the logfile in hidden directory c:\users\Youruser\appdata\local\virtualstore\program files\stunnel\stunnel.log ( Youruser is the windows user which started stunnel ) If you want a common logfile for all users, either you install stunnel in another writeable directory (security risk ?) or if installing in program files change your stunnel.conf file to have the log file in a writeable directory e.g. c:\temp or the standard common data directory c:\programData (also a hidden directory ) I use stunnel as a service and defined "output = c:\programData\stunnel\stunnel.log" stunnel writes there and only users with admin access could change the logfile. Dietmar Hacker

1 0

Build stunnel 4.53 binaries for windows error
by Anton Tkachev 01 Aug '12

01 Aug '12

Hey Guys, I'm trying to build stunnel 4.53 binaries for windows on Debian Squeeze x86 using instructions in INSTALL.W32 file. I use the latest openssl-1.0.1c (libssl-dev debian package installed also). At the last step 'make stunnel.exe' returns following error: # make stunnel.exe i586-mingw32msvc-gcc -c -I/usr/src/openssl-0.9.8s-fips/inc32 -mthreads -fstack-protector -O2 -Wall -Wextra -Wno-long-long -pedantic -o str.obj str.c In file included from str.c:38: common.h:392:33: error: openssl/opensslconf.h: No such file or directory common.h:405:27: error: openssl/lhash.h: No such file or directory common.h:406:25: error: openssl/ssl.h: No such file or directory common.h:407:25: error: openssl/err.h: No such file or directory common.h:408:66: error: openssl/crypto.h: No such file or directory common.h:409:26: error: openssl/rand.h: No such file or directory common.h:411:25: error: openssl/md4.h: No such file or directory common.h:413:25: error: openssl/des.h: No such file or directory common.h:417:28: error: openssl/engine.h: No such file or directory In file included from str.c:38: common.h:449: warning: return type defaults to ‘int’ common.h: In function ‘STACK_OF’: common.h:449: error: expected declaration specifiers before ‘*’ token In file included from str.c:39: prototypes.h:50: error: storage class specified for parameter ‘LOG_MODE’ prototypes.h:61: error: storage class specified for parameter ‘SOCKADDR_UNION’ prototypes.h:64: error: expected specifier-qualifier-list before ‘SOCKADDR_UNION’ prototypes.h:67: warning: struct has no members prototypes.h:67: error: storage class specified for parameter ‘SOCKADDR_LIST’ prototypes.h:72: error: storage class specified for parameter ‘COMP_TYPE’ prototypes.h:78: error: expected specifier-qualifier-list before ‘COMP_TYPE’ prototypes.h:114: warning: struct has no members prototypes.h:114: error: storage class specified for parameter ‘GLOBAL_OPTIONS’ prototypes.h:116: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘global_options’ prototypes.h:124: error: expected specifier-qualifier-list before ‘SSL_CTX’ prototypes.h:222: error: storage class specified for parameter ‘SERVICE_OPTIONS’ prototypes.h:224: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘service_options’ prototypes.h:236: error: storage class specified for parameter ‘VAL_TYPE’ prototypes.h:244: error: storage class specified for parameter ‘OPT_UNION’ prototypes.h:250: error: expected specifier-qualifier-list before ‘VAL_TYPE’ prototypes.h:252: error: storage class specified for parameter ‘SOCK_OPT’ prototypes.h:256: error: storage class specified for parameter ‘CONF_TYPE’ prototypes.h:269: error: storage class specified for parameter ‘s_poll_set’ prototypes.h:278: error: storage class specified for parameter ‘DISK_FILE’ prototypes.h:285: error: storage class specified for parameter ‘FD’ prototypes.h:290: error: storage class specified for parameter ‘max_clients’ prototypes.h:291: error: storage class specified for parameter ‘num_clients’ prototypes.h:327: warning: parameter names (without types) in function declaration prototypes.h:347: error: storage class specified for parameter ‘cli_index’ prototypes.h:347: error: storage class specified for parameter ‘opt_index’ prototypes.h:350: error: expected ‘)’ before ‘*’ token prototypes.h:355: error: expected declaration specifiers or ‘...’ before ‘CONF_TYPE’ prototypes.h:361: error: expected specifier-qualifier-list before ‘SERVICE_OPTIONS’ prototypes.h:363: warning: struct has no members prototypes.h:363: error: storage class specified for parameter ‘UI_DATA’ prototypes.h:365: error: expected ‘)’ before ‘*’ token prototypes.h:370: error: expected ‘)’ before ‘*’ token prototypes.h:374: error: expected declaration specifiers before ‘s_poll_set’ prototypes.h:375: error: expected ‘)’ before ‘*’ token prototypes.h:376: error: expected ‘)’ before ‘*’ token prototypes.h:377: error: expected ‘)’ before ‘*’ token prototypes.h:378: error: expected ‘)’ before ‘*’ token prototypes.h:379: error: expected ‘)’ before ‘*’ token prototypes.h:380: error: expected ‘)’ before ‘*’ token prototypes.h:381: error: expected ‘)’ before ‘*’ token prototypes.h:401: error: expected specifier-qualifier-list before ‘SSL’ prototypes.h:422: error: storage class specified for parameter ‘CLI’ prototypes.h:424: error: expected declaration specifiers before ‘CLI’ prototypes.h:426: error: expected ‘)’ before ‘*’ token prototypes.h:430: error: expected ‘)’ before ‘*’ token prototypes.h:431: error: expected ‘)’ before ‘*’ token prototypes.h:432: error: expected ‘)’ before ‘*’ token prototypes.h:433: error: expected ‘)’ before ‘*’ token prototypes.h:434: error: expected ‘)’ before ‘*’ token prototypes.h:436: error: expected ‘)’ before ‘*’ token prototypes.h:450: error: storage class specified for parameter ‘PROTOCOL_TYPE’ prototypes.h:453: error: expected ‘)’ before ‘*’ token prototypes.h:457: error: expected ‘)’ before ‘*’ token prototypes.h:458: error: expected ‘)’ before ‘*’ token prototypes.h:459: error: expected ‘)’ before ‘*’ token prototypes.h:460: error: expected ‘)’ before ‘*’ token prototypes.h:461: error: expected ‘)’ before ‘*’ token prototypes.h:462: warning: type defaults to ‘int’ in declaration of ‘SOCKADDR_UNION’ prototypes.h:462: error: expected ‘;’, ‘,’ or ‘)’ before ‘*’ token prototypes.h:493: error: storage class specified for parameter ‘SECTION_CODE’ prototypes.h:495: warning: parameter names (without types) in function declaration prototypes.h:496: warning: parameter names (without types) in function declaration prototypes.h:500: error: expected declaration specifiers or ‘...’ before ‘CLI’ prototypes.h:526: error: storage class specified for parameter ‘hwnd’ prototypes.h:530: error: expected ‘)’ before ‘*’ token prototypes.h:535: error: storage class specified for parameter ‘GETADDRINFO’ prototypes.h:536: error: storage class specified for parameter ‘FREEADDRINFO’ prototypes.h:538: error: storage class specified for parameter ‘GETNAMEINFO’ prototypes.h:539: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘s_getaddrinfo’ prototypes.h:540: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘s_freeaddrinfo’ prototypes.h:541: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘s_getnameinfo’ prototypes.h:550: error: expected declaration specifiers before ‘DISK_FILE’ prototypes.h:551: error: expected ‘)’ before ‘*’ token prototypes.h:552: error: expected ‘)’ before ‘*’ token prototypes.h:553: error: expected ‘)’ before ‘*’ token prototypes.h:563: error: expected ‘)’ before ‘*’ token str.c:49: error: storage class specified for parameter ‘canary’ str.c:50: error: storage class specified for parameter ‘canary_initialized’ str.c:50: error: parameter ‘canary_initialized’ is initialized str.c:52: error: storage class specified for parameter ‘ALLOC_LIST’ str.c:55: error: expected specifier-qualifier-list before ‘ALLOC_LIST’ str.c:57: warning: struct has no members str.c:57: error: storage class specified for parameter ‘ALLOC_TLS’ str.c:60: error: expected specifier-qualifier-list before ‘ALLOC_LIST’ str.c:67: warning: struct has no members str.c:59: warning: empty declaration str.c:73: error: expected ‘)’ before ‘*’ token str.c:74: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:75: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:77: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:85: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:95: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:175: error: storage class specified for parameter ‘tls_index’ str.c:177: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:181: error: expected ‘)’ before ‘*’ token str.c:185: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:191: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:198: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:210: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:228: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:262: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:291: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:315: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:326: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token common.h:449: warning: type of ‘SSL_COMP’ defaults to ‘int’ str.c:175: error: declaration for parameter ‘tls_index’ but no such parameter str.c:57: error: declaration for parameter ‘ALLOC_TLS’ but no such parameter str.c:52: error: declaration for parameter ‘ALLOC_LIST’ but no such parameter str.c:50: error: declaration for parameter ‘canary_initialized’ but no such parameter str.c:49: error: declaration for parameter ‘canary’ but no such parameter prototypes.h:581: error: declaration for parameter ‘str_printf’ but no such parameter prototypes.h:580: error: declaration for parameter ‘str_vprintf’ but no such parameter prototypes.h:579: error: declaration for parameter ‘str_dup’ but no such parameter prototypes.h:577: error: declaration for parameter ‘str_free_debug’ but no such parameter prototypes.h:575: error: declaration for parameter ‘str_detach_debug’ but no such parameter prototypes.h:573: error: declaration for parameter ‘str_realloc_debug’ but no such parameter prototypes.h:571: error: declaration for parameter ‘str_alloc_debug’ but no such parameter prototypes.h:570: error: declaration for parameter ‘str_stats’ but no such parameter prototypes.h:569: error: declaration for parameter ‘str_cleanup’ but no such parameter prototypes.h:568: error: declaration for parameter ‘str_canary_init’ but no such parameter prototypes.h:567: error: declaration for parameter ‘str_init’ but no such parameter prototypes.h:562: error: declaration for parameter ‘libwrap_init’ but no such parameter prototypes.h:557: error: declaration for parameter ‘tstr2str’ but no such parameter prototypes.h:556: error: declaration for parameter ‘str2tstr’ but no such parameter prototypes.h:537: error: declaration for parameter ‘GETNAMEINFO’ but no such parameter prototypes.h:536: error: declaration for parameter ‘FREEADDRINFO’ but no such parameter prototypes.h:534: error: declaration for parameter ‘GETADDRINFO’ but no such parameter prototypes.h:528: error: declaration for parameter ‘passwd_cb’ but no such parameter prototypes.h:526: error: declaration for parameter ‘hwnd’ but no such parameter prototypes.h:500: error: declaration for parameter ‘create_client’ but no such parameter prototypes.h:499: error: declaration for parameter ‘stunnel_thread_id’ but no such parameter prototypes.h:498: error: declaration for parameter ‘stunnel_process_id’ but no such parameter prototypes.h:497: error: declaration for parameter ‘sthreads_init’ but no such parameter prototypes.h:496: error: declaration for parameter ‘leave_critical_section’ but no such parameter prototypes.h:495: error: declaration for parameter ‘enter_critical_section’ but no such parameter prototypes.h:493: error: declaration for parameter ‘SECTION_CODE’ but no such parameter prototypes.h:479: error: declaration for parameter ‘local_getnameinfo’ but no such parameter prototypes.h:463: error: declaration for parameter ‘s_gai_strerror’ but no such parameter prototypes.h:452: error: declaration for parameter ‘find_protocol_id’ but no such parameter prototypes.h:450: error: declaration for parameter ‘PROTOCOL_TYPE’ but no such parameter prototypes.h:425: error: declaration for parameter ‘client_thread’ but no such parameter prototypes.h:422: error: declaration for parameter ‘CLI’ but no such parameter prototypes.h:395: error: declaration for parameter ‘make_sockets’ but no such parameter prototypes.h:394: error: declaration for parameter ‘get_socket_error’ but no such parameter prototypes.h:393: error: declaration for parameter ‘set_socket_options’ but no such parameter prototypes.h:366: error: declaration for parameter ‘sslerror’ but no such parameter prototypes.h:363: error: declaration for parameter ‘UI_DATA’ but no such parameter prototypes.h:356: error: declaration for parameter ‘apply_conf’ but no such parameter prototypes.h:355: error: declaration for parameter ‘parse_conf’ but no such parameter prototypes.h:354: error: declaration for parameter ‘parse_commandline’ but no such parameter prototypes.h:349: error: declaration for parameter ‘ssl_init’ but no such parameter prototypes.h:347: error: declaration for parameter ‘opt_index’ but no such parameter prototypes.h:347: error: declaration for parameter ‘cli_index’ but no such parameter prototypes.h:343: error: declaration for parameter ‘pty_allocate’ but no such parameter prototypes.h:339: error: declaration for parameter ‘s_strerror’ but no such parameter prototypes.h:338: error: declaration for parameter ‘log_error’ but no such parameter prototypes.h:337: error: declaration for parameter ‘sockerror’ but no such parameter prototypes.h:336: error: declaration for parameter ‘ioerror’ but no such parameter prototypes.h:334: error: declaration for parameter ‘fatal_debug’ but no such parameter prototypes.h:328: error: declaration for parameter ‘s_log’ but no such parameter prototypes.h:327: error: declaration for parameter ‘log_flush’ but no such parameter prototypes.h:326: error: declaration for parameter ‘log_close’ but no such parameter prototypes.h:325: error: declaration for parameter ‘log_open’ but no such parameter prototypes.h:317: error: declaration for parameter ‘set_nonblock’ but no such parameter prototypes.h:316: error: declaration for parameter ‘s_accept’ but no such parameter prototypes.h:315: error: declaration for parameter ‘s_socketpair’ but no such parameter prototypes.h:314: error: declaration for parameter ‘s_pipe’ but no such parameter prototypes.h:313: error: declaration for parameter ‘s_socket’ but no such parameter prototypes.h:311: error: declaration for parameter ‘get_limits’ but no such parameter prototypes.h:306: error: declaration for parameter ‘stunnel_info’ but no such parameter prototypes.h:302: error: declaration for parameter ‘signal_post’ but no such parameter prototypes.h:298: error: declaration for parameter ‘bind_ports’ but no such parameter prototypes.h:297: error: declaration for parameter ‘unbind_ports’ but no such parameter prototypes.h:296: error: declaration for parameter ‘daemon_loop’ but no such parameter prototypes.h:295: error: declaration for parameter ‘main_configure’ but no such parameter prototypes.h:294: error: declaration for parameter ‘main_initialize’ but no such parameter prototypes.h:291: error: declaration for parameter ‘num_clients’ but no such parameter prototypes.h:290: error: declaration for parameter ‘max_clients’ but no such parameter prototypes.h:285: error: declaration for parameter ‘FD’ but no such parameter prototypes.h:278: error: declaration for parameter ‘DISK_FILE’ but no such parameter prototypes.h:269: error: declaration for parameter ‘s_poll_set’ but no such parameter prototypes.h:256: error: declaration for parameter ‘CONF_TYPE’ but no such parameter prototypes.h:252: error: declaration for parameter ‘SOCK_OPT’ but no such parameter prototypes.h:244: error: declaration for parameter ‘OPT_UNION’ but no such parameter prototypes.h:236: error: declaration for parameter ‘VAL_TYPE’ but no such parameter prototypes.h:222: error: declaration for parameter ‘SERVICE_OPTIONS’ but no such parameter prototypes.h:114: error: declaration for parameter ‘GLOBAL_OPTIONS’ but no such parameter prototypes.h:72: error: declaration for parameter ‘COMP_TYPE’ but no such parameter prototypes.h:67: error: declaration for parameter ‘SOCKADDR_LIST’ but no such parameter prototypes.h:61: error: declaration for parameter ‘SOCKADDR_UNION’ but no such parameter prototypes.h:50: error: declaration for parameter ‘LOG_MODE’ but no such parameter str.c:342: error: expected ‘{’ at end of input common.h:449: warning: unused parameter ‘SSL_COMP’ str.c:175: warning: unused parameter ‘tls_index’ str.c:57: warning: unused parameter ‘ALLOC_TLS’ str.c:52: warning: unused parameter ‘ALLOC_LIST’ str.c:50: warning: unused parameter ‘canary_initialized’ str.c:49: warning: unused parameter ‘canary’ prototypes.h:581: warning: unused parameter ‘str_printf’ prototypes.h:580: warning: unused parameter ‘str_vprintf’ prototypes.h:579: warning: unused parameter ‘str_dup’ prototypes.h:577: warning: unused parameter ‘str_free_debug’ prototypes.h:575: warning: unused parameter ‘str_detach_debug’ prototypes.h:573: warning: unused parameter ‘str_realloc_debug’ prototypes.h:571: warning: unused parameter ‘str_alloc_debug’ prototypes.h:570: warning: unused parameter ‘str_stats’ prototypes.h:569: warning: unused parameter ‘str_cleanup’ prototypes.h:568: warning: unused parameter ‘str_canary_init’ prototypes.h:567: warning: unused parameter ‘str_init’ prototypes.h:562: warning: unused parameter ‘libwrap_init’ prototypes.h:557: warning: unused parameter ‘tstr2str’ prototypes.h:556: warning: unused parameter ‘str2tstr’ prototypes.h:537: warning: unused parameter ‘GETNAMEINFO’ prototypes.h:536: warning: unused parameter ‘FREEADDRINFO’ prototypes.h:534: warning: unused parameter ‘GETADDRINFO’ prototypes.h:528: warning: unused parameter ‘passwd_cb’ prototypes.h:526: warning: unused parameter ‘hwnd’ prototypes.h:500: warning: unused parameter ‘create_client’ prototypes.h:499: warning: unused parameter ‘stunnel_thread_id’ prototypes.h:498: warning: unused parameter ‘stunnel_process_id’ prototypes.h:497: warning: unused parameter ‘sthreads_init’ prototypes.h:496: warning: unused parameter ‘leave_critical_section’ prototypes.h:495: warning: unused parameter ‘enter_critical_section’ prototypes.h:493: warning: unused parameter ‘SECTION_CODE’ prototypes.h:479: warning: unused parameter ‘local_getnameinfo’ prototypes.h:463: warning: unused parameter ‘s_gai_strerror’ prototypes.h:452: warning: unused parameter ‘find_protocol_id’ prototypes.h:450: warning: unused parameter ‘PROTOCOL_TYPE’ prototypes.h:425: warning: unused parameter ‘client_thread’ prototypes.h:422: warning: unused parameter ‘CLI’ prototypes.h:395: warning: unused parameter ‘make_sockets’ prototypes.h:394: warning: unused parameter ‘get_socket_error’ prototypes.h:393: warning: unused parameter ‘set_socket_options’ prototypes.h:366: warning: unused parameter ‘sslerror’ prototypes.h:363: warning: unused parameter ‘UI_DATA’ prototypes.h:356: warning: unused parameter ‘apply_conf’ prototypes.h:355: warning: unused parameter ‘parse_conf’ prototypes.h:354: warning: unused parameter ‘parse_commandline’ prototypes.h:349: warning: unused parameter ‘ssl_init’ prototypes.h:347: warning: unused parameter ‘opt_index’ prototypes.h:347: warning: unused parameter ‘cli_index’ prototypes.h:343: warning: unused parameter ‘pty_allocate’ prototypes.h:339: warning: unused parameter ‘s_strerror’ prototypes.h:338: warning: unused parameter ‘log_error’ prototypes.h:337: warning: unused parameter ‘sockerror’ prototypes.h:336: warning: unused parameter ‘ioerror’ prototypes.h:334: warning: unused parameter ‘fatal_debug’ prototypes.h:328: warning: unused parameter ‘s_log’ prototypes.h:327: warning: unused parameter ‘log_flush’ prototypes.h:326: warning: unused parameter ‘log_close’ prototypes.h:325: warning: unused parameter ‘log_open’ prototypes.h:317: warning: unused parameter ‘set_nonblock’ prototypes.h:316: warning: unused parameter ‘s_accept’ prototypes.h:315: warning: unused parameter ‘s_socketpair’ prototypes.h:314: warning: unused parameter ‘s_pipe’ prototypes.h:313: warning: unused parameter ‘s_socket’ prototypes.h:311: warning: unused parameter ‘get_limits’ prototypes.h:306: warning: unused parameter ‘stunnel_info’ prototypes.h:302: warning: unused parameter ‘signal_post’ prototypes.h:298: warning: unused parameter ‘bind_ports’ prototypes.h:297: warning: unused parameter ‘unbind_ports’ prototypes.h:296: warning: unused parameter ‘daemon_loop’ prototypes.h:295: warning: unused parameter ‘main_configure’ prototypes.h:294: warning: unused parameter ‘main_initialize’ prototypes.h:291: warning: unused parameter ‘num_clients’ prototypes.h:290: warning: unused parameter ‘max_clients’ prototypes.h:285: warning: unused parameter ‘FD’ prototypes.h:278: warning: unused parameter ‘DISK_FILE’ prototypes.h:269: warning: unused parameter ‘s_poll_set’ prototypes.h:256: warning: unused parameter ‘CONF_TYPE’ prototypes.h:252: warning: unused parameter ‘SOCK_OPT’ prototypes.h:244: warning: unused parameter ‘OPT_UNION’ prototypes.h:236: warning: unused parameter ‘VAL_TYPE’ prototypes.h:222: warning: unused parameter ‘SERVICE_OPTIONS’ prototypes.h:114: warning: unused parameter ‘GLOBAL_OPTIONS’ prototypes.h:72: warning: unused parameter ‘COMP_TYPE’ prototypes.h:67: warning: unused parameter ‘SOCKADDR_LIST’ prototypes.h:61: warning: unused parameter ‘SOCKADDR_UNION’ prototypes.h:50: warning: unused parameter ‘LOG_MODE’ make: *** [str.obj] Error 1 It seems it has hardcoded path to openssl (/usr/src/openssl-0.9.8s-fips). I tried to change this path to the right one in Makefile*, but with no luck - I get the same error. I also tried to build stunnel with openssl-0.9.8s, but openssl configure command from the instruction doesn't work: root@debian:/usr/src/openssl-0.9.8s-i586# ./Configure --cross-compile-prefix=i586-mingw32msvc- mingw shared zlib-dynamic Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [enable-montasm] [no-asm] [no-dso] [no-krb5] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--test-sanity] os/compiler[:flags] Regards, Anton.

3 11

"application failed to initialize properly"
by Generic Poster 31 Jul '12

31 Jul '12

Hello Stunnel-users, Whenever I run Stunnel from a Windows 7 Virtual XP machine I receive the following error message: --------------------------- stunnel.exe - Application Error --------------------------- The application failed to initialize properly (0xc0150002). Click on OK to terminate the application. --------------------------- Any ideas as to what causes it or how I can get around the problem? The result is the same regardless of version. -- Best regards, Generic

2 1

Newbie: Success, now failure???
by Roger Bohl (Sr.) 25 Jul '12

25 Jul '12

For several days, I've been using Stunnel (with Blat) successfully (possibly with no intervening re-boots). A day or so ago, the system was re booted Today, however, Stunnel failed. I got the following Stunnel reply message: No limit detected for the number of clients stunnel 4.53 on x86-pc-mingw32-gnu platform Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 Reading configuration from file stunnel.conf FIPS mode is enabled Compression not enabled Snagged 64 random bytes from .rnd Wrote 1024 new random bytes to .rnd PRNG seeded successfully Initializing inetd mode configuration Certificate: client.pem Certificate loaded Key file: client.pem Private key loaded SSL options set: 0x00000004 Accept option is not allowed in inetd mode Remove accept option or define a [section] Server is down The stunnel.conf file in the Stunnel directory is: CAfile = cert.pem cert = client.pem client = yes RNDfile = .rnd [gmail smtp] ; (I may have had this in or out before. In "cleaning up" various files, I may have thought this to be a comment, and removed it.) accept = 25 connect = smtp.gmail.com:465 The program fails both with and without the [gmail smtp] line included. Except, possibly, for removing ;[comment] lines, no other changes occurred. Can somebody give me a clue as to the cause, and suggest the fix. I'm running Windows Vista. (I found the 17+ page instruction file, by Michal Trojnara, but didn't see a solution, there.) Thanks. Roger Bohl rhbohl(a)gmail.com 707-939-8459 PDT

1 0

please unsubscribe my email - thx
by Rüdiger Konte 24 Jul '12

24 Jul '12

1 0

stunnel and http
by John 23 Jul '12

23 Jul '12

I am running the latest stunnel for Windows on 64-bit Win7 as an application, not as a service. I simply unzipped everything to one folder, configured the "stunnel.conf" file; and when I need to run the program, I can open a command prompt in its folder and type "stunnel stunnel.conf". It then reads my stunnel.conf file and works its magic. This works fine for capturing the data from those programs which I can configure to use localhost and a specific port because I can configure stunnel.conf with accept = ip.address:port Now I have a program that I want to use to download some text files from the internet using http or https. However, this program cannot be manually configured to make a connection with a certain IP and port. Instead, I have to give it an alias-like name, which it then maps to one of several different domain names, makes a DNS query for the IP and transmits to that address the instructions for downloading some text files. So, is it possible to have stunnel "capture" any and all http transports (port 80) or https transports (port 443) from a specific program, regardless of which IP that connection was destined for, so that I can then direct this data traffic from stunnel to socat or from stunnel to an http proxy which I can manually direct to a specific connection? Is this a kind of thing for which stunnel can be used? If so, where can I find the instructions for setting it up? Thanks.

2 2

Reboot Requires Manual: "service stunnel restart"
by John Vasko 21 Jul '12

21 Jul '12

On FreeBSD 9.0 stunnel 4.43 works fine after running "service stunnel restart", but stunnel fails loading on boot. My desired config includes: /usr/local/etc/stunnel/stunnel.conf -------------------------------------------- [attsmtp] client = yes verify = 0 accept = 2525 connect = smtp.att.yahoo.com:465 delay = yes Please advise. See below for messages after bootup: /var/run/stunnel/stunnel.log ------------------------------------ 2012.07.21 02:52:06 LOG7[1378:675300096]: No limit detected for the number of clients 2012.07.21 02:52:06 LOG7[1378:675300096]: signal_pipe: FD=3 allocated (non-blocking mode) 2012.07.21 02:52:06 LOG7[1378:675300096]: signal_pipe: FD=4 allocated (non-blocking mode) 2012.07.21 02:52:06 LOG5[1378:675300096]: stunnel 4.43 on i386-portbld-freebsd9.0 platform 2012.07.21 02:52:06 LOG5[1378:675300096]: Compiled/running with OpenSSL 1.0.0e 6 Sep 2011 2012.07.21 02:52:06 LOG5[1378:675300096]: Threading:PTHREAD SSL:ENGINE Auth:LIBWRAP Sockets:POLL,IPv6 2012.07.21 02:52:06 LOG5[1378:675300096]: Reading configuration from file /usr/local/etc/stunnel/stunnel.conf 2012.07.21 02:52:06 LOG7[1378:675300096]: Snagged 64 random bytes from //.rnd 2012.07.21 02:52:06 LOG7[1378:675300096]: Wrote 1024 new random bytes to //.rnd 2012.07.21 02:52:06 LOG7[1378:675300096]: PRNG seeded successfully 2012.07.21 02:52:08 LOG6[1378:675300096]: Initializing SSL context for service attsmtp 2012.07.21 02:52:08 LOG7[1378:675300096]: SSL options set: 0x00000004 2012.07.21 02:52:08 LOG6[1378:675300096]: SSL context initialized 2012.07.21 02:52:08 LOG5[1378:675300096]: Configuration successful 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=5 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=6 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=6 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=7 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=7 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=8 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=8 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=9 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=9 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: libwrap_init: FD=10 allocated (blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: accept socket: FD=11 allocated (non-blocking mode) 2012.07.21 02:52:08 LOG7[1378:675300096]: Option SO_REUSEADDR set on accept socket 2012.07.21 02:52:08 LOG7[1378:675300096]: Service attsmtp bound to 0.0.0.0:2525 2012.07.21 02:52:08 LOG7[1378:675300096]: Service attsmtp opened FD=11 2012.07.21 02:52:08 LOG7[1378:675300096]: Created pid file /stunnel.pid 2012.07.21 02:52:15 LOG7[1378:675300096]: Dispatching signals from the signal pipe 2012.07.21 02:52:15 LOG3[1378:675300096]: Received signal 2; terminating 2012.07.21 02:52:15 LOG7[1378:675300096]: str_stats: 43 block(s), 3554 byte(s) 2012.07.21 02:52:15 LOG7[1378:675300096]: removing pid file /stunnel.pid

1 1

Re: [stunnel-users] Reverse tunnel with middle server
by Javier 19 Jul '12

19 Jul '12

[To the mailing list: Sorry for these non-english messages, I started, previously, a private communication to avoid it] On Thu, 19 Jul 2012 20:26:45 +0200 "Jorge A." <curruscataphractus(a)gmail.com> wrote: > Hola Javier, > > Igual no me he explicado bien. Lo que quiero es conectar dos > máquinas, una dentro de una NAT detrás de un router que no tiene > redirigidos los puertos a la máquina claro, pero que sí tiene > Internet y acceso a la máquina servidor. Esto me sigue sin quedar claro. Ya perdonarás. Una (Objetivo) está conectada a un router, que sirve internet a una red local, pero que no tiene redirigidos los puertos a la máquina que tiene el servidor http. Esta no tiene acceso a internet porque no se le ha configurado una puerta de enlace y además no la pueden alcanzar porque no hay puertos redirigidos hacia ella. Hasta ahí, todo bien ;) Lo que quería saber es si la máquina que hace de Servidor hacia internet está en la misma subred local o no que la máquina objetivo. El que la máquina objetivo vea al servidor no implica necesariamente que el servidor vea al objetivo. Además, si está conectada al mismo router, porque decías que era accesible desde internet. Lo que entiendo es que quieres redirigir el tráfico proveniente al servidor desde el exterior al objetivo http. Si el servidor, ve a la máquina http, bastaría con decir en la configuración de stunnel que conecte con el servidor http de esa maquina indicándole la ip:puerto. Por eso te dije que no tenía mayor complicación. En esa configuración no hace falta que la máquina objetivo tenga un servidor stunnel y viceversa para comunicarse entre ellos. La comunicación entre el servidor y la máquina objetivo puede ser abierta sin problemas. Lo importante ya existe, que el servidor haga de puente ssl entre internet y el objetivo http. > Durante el día de hoy lo he conseguido hacer más o menos usando > pppd y stunnel entre 2 linux pero no sé si sería posible hacerlo > sólo con stunnel (y *ifconfig*, *ip*, *route* o similares). Sobre > todo porque la máquina cliente objetivo está bastante limitada y no > puedo instalar de manera fácil pppd (tiene un kernel custom, hay > que compilar el módulo pppd del kernel, el demonio, etc). > > Lo que estoy mirando ahora es el comando *ip tunnel* para per si > puedo hacer algo parecido con pppd pero no sé si me estoy dando > golpes contra la pared. > > Muchas gracias de antemano por tu ayuda. De nada, aunque con Linux he topado. Conozco muy por encima los comandos. Pero, olvidándonos de las herramientas a utilizar, sabiendo exactamente el entorno en el que están esas máquinas, todo es coser y cantar, a no ser que sea un imposible ;) De ahí la importancia de saber si están en la misma red local o no, etc. Saludos.

1 1

Reverse tunnel with middle server
by Jorge A. 18 Jul '12

18 Jul '12

Hi everyone, I've search into archives trying to found a solution for my problem without success. The problem is simple: make a machine available on HTTP port when it's behind a e.g. common DSL. I have a middle server for which I have full access to install any program, linux. What I was trying to do is the following: Three machines: Middle server (Server), Target (linux machine behind DSL) and Client. Same stunnel version on both Server and Target. Latests. Server is available on the Internet, running stunnel Target is behind a nat router, e.g. inside a common DSL. I assume this must run stunnel as well. Client connects to Server and Server forwards traffic to Target seamlessly. As far as I know, running stunnel on client mode from e.g. Target and trying to connect to whichever service on Server does not work on reverse: you cannot connect backwards to target. Am I correct? If not, how do I configure both ends and how do I know port to use to connect to Target (log file?) ? What I've tested: 1. Run stunnel on Server on server mode accepting ('accept') connections on a fixed port, e.g. 5000. Here, as far as I know, you must define the 'connect' directive to forward traffic to either local or remote host. The problem is, from Server, you don't know Target ip nor it's accessible 2. Run stunnel on Server and, on Target launch stunnel on client mode to try Thanks in advance and congratulations as it's a great piece of software. Best regards, Jorge

1 0

Stunnel on WIndows Server 2008 R2 SP1 x 64 fails - Microsoft.VC90.CRT.MANIFEST
by Rüdiger Konte 15 Jul '12

15 Jul '12

Hi Stunnel users, I am trying to run stunnel "4.53 installer.exe" on a MS Windows Server 2008 R2 SP1 64 Bit (under VMWARE Workstation 6.5 as a virtual system; Physical Host OS is WIN7 Ultimate 32 BIT) The installation of stunnel was done as an "Administrator" and it ran through without issues. But I cannot se any service running. And when I try to launch the stunnel shortcut on the desktop, i got a error message like: "The application was unable to start correctly (0xc0150002). Click OK to close the application." I assume it has something to do with the Microsoft.VC90.CRT.MANIFEST file. But i am not an expert. This is shown in the Event log: ########################## Protokollname: Application Quelle: SideBySide Datum: 15.07.2012 12:17:01 Ereignis-ID: 35 Aufgabenkategorie:Keine Ebene: Fehler Schlüsselwörter:Klassisch Benutzer: Nicht zutreffend Computer: WIN-C1K2E115MV1 Beschreibung: Fehler beim Generieren des Aktivierungskontextes für "C:\Program Files (x86)\stunnel\LIBEAY32.dll". Fehler in Manifest- oder Richtliniendatei "C:\Program Files (x86)\stunnel\Microsoft.VC90.CRT.MANIFEST" in Zeile 4. Die im Manifest gefundene Komponenten-ID stimmt nicht mit der ID der angeforderten Komponente überein. Verweis: Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8". Definition: Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.30729.6161". Verwenden Sie das Programm "sxstrace.exe" für eine detaillierte Diagnose. Ereignis-XML: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="SideBySide" /> <EventID Qualifiers="49409">35</EventID> <Level>2</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-07-15T10:17:01.000000000Z" /> <EventRecordID>197</EventRecordID> <Channel>Application</Channel> <Computer>WIN-C1K2E115MV1</Computer> <Security /> </System> <EventData> <Data>Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8"</Data> <Data>Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.30729.6161"</Data> <Data>C:\Program Files (x86)\stunnel\LIBEAY32.dll</Data> <Data>C:\Program Files (x86)\stunnel\Microsoft.VC90.CRT.MANIFEST</Data> <Data>4</Data> ########################## I ran the MS tool sxstrace.exe to get more details: See the outcome below: ######################################### INFORMATION: Die Manifestsdefinitionsidentität ist "Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.30729.6161"". FEHLER: Die im Manifest gefundene Komponentenidentität stimmt nicht mit der Identität der angeforderten Komponente überein. Verweis: Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8". Definition: Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.30729.6161". FEHLER: Bei der Generierung des Aktivierungskontextes ist ein Fehler aufgetreten. Beendet die Generierung des Aktivierungskontextes. ######################################### Is anything missing? .NET or another library ? Note: I installed on the same server in a different snapshot stunnel version 4.4 and it seems to work, at least no error message. But i want to use the latest version. Any help would be nice. Best Rudi

1 0

Conf question: HTTP to HTTPS with SNI
by John Moser 03 Jul '12

03 Jul '12

I have a particular task I need to accomplish in which an HTTP-only caching proxy server is to accept SSL. The architecture in mind is as follows: - Receive request { HTTP request: - Received by caching proxy at localhost:80 HTTPS request: - Received by Pound - Decoded to HTTP - X-FROM-SSL header added - Forwarded to localhost:80 (caching proxy) } Proxy receives HTTP request - Perform caching - If X-FROM-SSL, forward to localhost:8088 - Else forward to HTTP server It is at this point that two design options come into play, both using stunnel. Either use SNI or use stunnel and HTTP. Via SNI, this would appear as follows: Stunnel receives HTTP request - Forward to https://http-server:443/ with SNI This of course requires that stunnel can read the 'Host' header out of an HTTP request and use that for SNI automatically (there's some 300 virtual hosts on that server). If not, this is infeasible. Which is my question, of course: can this be done? If this isn't an option, then the next logical way to handle this problem is: Stunnel receives HTTP request: - SSL encrypt - Forward to http-server:8443 http-server receives HTTP over stunnel - stunnel receives on http-server:8443 - Decrypt and forward to http://localhost:80/ In this way the entire connection would be encrypted, and the HTTP server would see the Host: header and use that to figure out the virtual host etc. Is that the better/only way?

1 0

more than 1000 concurrent connections?
by Trenton Ashburn 03 Jul '12

03 Jul '12

Hi There - I'd like to use stunnel as the SSL termination point for a bunch of persistent TCP connections. I'm running it on an EC2 instance and it's only allowing me about 1000 concurrent connections. It doesn't matter if the connections come from one client IP or two. How can I raise this limit? I've already raised the OS tcp connection limit with ulimit and it doesn't improve things. Thanks, T

4 5

Re: [stunnel-users] Interoperability problems with .net client software
by josealf＠rocketmail.com 30 Jun '12

30 Jun '12

Not as far as I know. You need to check with the client application developers. Maybe they can use a debugger to trace the program flow and see where and why it fails (assuming they understand the protocols and the tools). The application must be coded to present the certificate, and my guess (just a guess), is that it isn't or is blocking before getting to that point. -----Original Message----- From: ProPharma Systems AG - Gregor Bürgisser <g.buergisser(a)propharma.ch> Date: Fri, 29 Jun 2012 06:59:14 To: <josealf(a)rocketmail.com> Subject: Re: [stunnel-users] Interoperability problems with .net client software Yes I did. Also the CA used to sign the server cert. All to no avail. Do you know if there are any (known) interoperability issues between stunnel and .net applications? On 06/28/2012 02:05 PM, josealf(a)rocketmail.com wrote: > Looks like your client is not presenting the certificate to the stunnel server. Maybe because it does not trust the server certificate? Did you import your stunnel server cert into windows certificate store? > > > -----Original Message----- > From: ProPharma Systems AG - Gregor Bürgisser > <g.buergisser(a)propharma.ch> > Sender: stunnel-users-bounces(a)stunnel.org > Date: Thu, 28 Jun 2012 12:48:53 > To:<stunnel-users(a)stunnel.org> > Subject: [stunnel-users] Interoperability problems with .net client software > > Hi all, > > I'm using stunnel 4.53 under Linux to secure a service. There are two > different clients connecting to this service: My own client, also Linux > based and using libcurl and another (third party!) client being > developed using Microsoft .net stuff. > > Of course with my own client all works well. But we are not able to get > the Microsoft client running. stunnel keeps on telling: > > SSL_accept: 140890C7: error:140890C7:SSL > routines:SSL3_GET_CLIENT_CERTIFICATE:peer did not return a certificate > > We have tried diffierent things... I will outline them here if you think > it is helpful (in short: tried using certificates generated on the > Microsoft side, then tried using certificates created on the Linux side). > If "verify" ist set to 0 or 1 it works (of course) but with a higher > value the above message is logged. > > Are there any known pitfalls, problems or whatsoever when using stunnel > with a .net client? > Any advice would be appreciated! > > Regards, > Gregor > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users

1 0

clean installation on Windows
by John 29 Jun '12

29 Jun '12

Hello. I would like to install stunnel on 64-bit Win7, and I would like to know whether it is possible to do so by just unzipping the downloaded files into one folder and then clicking on the main executable, that is, to avoid making registry entries, etc. I would like to have a minimal impact to whatever extent is possible. Can it be done in this way, or does it need the whole shebang installer procedure to be run?

4 5

Stunnel, Pan and the SSL23_GET_SERVER_HELLO:unknown protocol
by mike 28 Jun '12

28 Jun '12

Hello All, Running Debian 6.0, stunnel4 and Pan 0.133 I have set up Pan and installed stunnel so that I can use ssl with nntp. Installing Pan and stunnel was easy. I've edited Pan to use localhost:119 and edited my config file in stunnel to point to my nntp server. I have allowed nntp in my hosts.allow for ALL:ALL. The problem I am running into is that Pan does not connect. I get the following error: Error reading from localhost. Connection reset by peer Checking with the following openssl command produced this error: root@triglav:/etc/stunnel# openssl s_client -ssl3 -connect localhost:119 CONNECTED(00000003) write:errno=104 Looking at the logs for stunnel I see many repetitions of this message: 2012.06.25 14:18:26 LOG7[16355:3074153328]: nntp started 2012.06.25 14:18:26 LOG7[16355:3074153328]: FD 13 in non-blocking mode 2012.06.25 14:18:26 LOG7[16355:3074153328]: TCP_NODELAY option set on local socket 2012.06.25 14:18:26 LOG7[16355:3074153328]: Waiting for a libwrap process 2012.06.25 14:18:26 LOG7[16355:3074153328]: Acquired libwrap process #0 2012.06.25 14:18:26 LOG7[16355:3074153328]: Releasing libwrap process #0 2012.06.25 14:18:26 LOG7[16355:3074153328]: Released libwrap process #0 2012.06.25 14:18:26 LOG7[16355:3074153328]: nntp permitted by libwrap from 127.0.0.1:59451 2012.06.25 14:18:26 LOG5[16355:3074153328]: nntp accepted connection from 127.0.0.1:59451 2012.06.25 14:18:26 LOG7[16355:3074153328]: FD 14 in non-blocking mode 2012.06.25 14:18:26 LOG6[16355:3074153328]: connect_blocking: connecting 209.197.15.238:119 2012.06.25 14:18:26 LOG7[16355:3074153328]: connect_blocking: s_poll_wait 209.197.15.238:119: waiting 10 seconds 2012.06.25 14:18:26 LOG5[16355:3074153328]: connect_blocking: connected 209.197.15.238:119 2012.06.25 14:18:26 LOG5[16355:3074153328]: nntp connected remote server from 192.168.2.56:51455 2012.06.25 14:18:26 LOG7[16355:3074153328]: Remote FD=14 initialized 2012.06.25 14:18:26 LOG7[16355:3074153328]: TCP_NODELAY option set on remote socket 2012.06.25 14:18:26 LOG7[16355:3074153328]: SSL state (connect): before/connect initialization 2012.06.25 14:18:26 LOG7[16355:3074153328]: SSL state (connect): SSLv2/v3 write client hello A 2012.06.25 14:18:26 LOG3[16355:3074153328]: SSL_connect: 140770FC: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol 2012.06.25 14:18:26 LOG5[16355:3074153328]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2012.06.25 14:18:26 LOG7[16355:3074153328]: nntp finished (0 left) Anyone know what is missing? It almost looks like it cant talk in either SSLv2 or v3 which makes no sense. Here is my stunnel config: ; Sample stunnel configuration file by Michal Trojnara 2002-2009 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of the chroot jail) ; Certificate/key is needed in server mode and optional in client mode ;cert = /etc/ssl/certs/stunnel.pem ;key = /etc/ssl/certs/stunnel.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = all ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /var/lib/stunnel4/ setuid = stunnel4 setgid = stunnel4 ; PID is created inside the chroot jail pid = /stunnel4.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = zlib ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; Authentication stuff ;verify = 2 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail ;CApath = /certs ; It's often easier to use CAfile ;CAfile = /etc/stunnel/certs.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 output = /var/log/stunnel4/stunnel.log foreground = no ; Use it for client mode client = yes ; Service-level configuration [nntp] accept = localhost:119 connect = news.aliant.net:119 ;[https] ;accept = 443 ;connect = 80 ;TIMEOUTclose = 0 ; vim:ft=dosini

2 4

Interoperability problems with .net client software
by ProPharma Systems AG - Gregor Bürgisser 28 Jun '12

28 Jun '12

Hi all, I'm using stunnel 4.53 under Linux to secure a service. There are two different clients connecting to this service: My own client, also Linux based and using libcurl and another (third party!) client being developed using Microsoft .net stuff. Of course with my own client all works well. But we are not able to get the Microsoft client running. stunnel keeps on telling: SSL_accept: 140890C7: error:140890C7:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:peer did not return a certificate We have tried diffierent things... I will outline them here if you think it is helpful (in short: tried using certificates generated on the Microsoft side, then tried using certificates created on the Linux side). If "verify" ist set to 0 or 1 it works (of course) but with a higher value the above message is logged. Are there any known pitfalls, problems or whatsoever when using stunnel with a .net client? Any advice would be appreciated! Regards, Gregor

2 1

Accept on same port to ethernet aliases
by John Morrison 27 Jun '12

27 Jun '12

Hi, Is it possible to configure stunnel to use the same port on different IP addresses that are Ethernet aliases? I have successfully set up a configuration file accepting SSL connections. Firstly I did this on all IP addresses by using the following configuration lines: accept = 443 connect = 80 This worked correctly. I then attempted to setup a second configuration file on an aliased Ethernet address. The configuration file settings are: test1.conf accept = 10.168.1.132:443 connect = 10.168.1.132:80 test2.conf accept = 10.168.1.133:443 connect = 10.168.1.133:80 Stunnel is able to start the first configuration file, but not the second. The error message I can see when I run the second configuration file in the foreground is: accept socket: FD=11 allocated (non-blocking mode) Option SO_REUSEADDR set on accept socket Error binding https to 10.168.1.133:443 bind: Address already in use (98) and if I telnet to 10.168.1.133 on port 443 the connection is accepted. I have attempted to use the binding socket options in the configuration files as described in the manual: socket = a:SO_BINDTODEVICE=eth0:0 and socket = a:SO_BINDTODEVICE=eth0:1 However in this case stunnel will not start either configuration file. The error message I receive is: Option SO_REUSEADDR set on accept socket SO_BINDTODEVICE: No such device (19) Is there a different way to configure stunnel to allow this to work? My ipconfig settings are below. I am running the ubuntu 10.04 version of stunnel. The version output is: stunnel 4.35 on x86_64-pc-linux-gnu with OpenSSL 1.0.0e 6 Sep 2011 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Thanks, John eth0:0 Link encap:Ethernet HWaddr 3c:4a:92:6d:0b:08 inet addr:10.168.1.132 Bcast:10.168.1.132 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:16 Memory:f4000000-f4012800 eth0:1 Link encap:Ethernet HWaddr 3c:4a:92:6d:0b:08 inet addr:10.168.1.133 Bcast:10.168.1.133 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:16 Memory:f4000000-f4012800

2 2

Confused about stunnel + haproxy
by Robin Lee Powell 27 Jun '12

27 Jun '12

I've set up stunnel + haproxy using the "protocol = proxy" method, but stunnel doesn't seem to pass to haproxy any information about the source IP of the original connection, which I thought was the point of using this method? Can someone tell me what I'm missng? I just want to have haproxy with SSL support without losing the client IP information completely. -Robin -- http://singinst.org/ : Our last, best hope for a fantastic future. .i ko na cpedu lo nu stidi vau loi jbopre .i danfu lu na go'i li'u .e lu go'i li'u .i ji'a go'i lu na'e go'i li'u .e lu go'i na'i li'u .e lu no'e go'i li'u .e lu to'e go'i li'u .e lu lo mamta be do cu sofybakni li'u

1 1

socket status
by Dee Ayy 20 Jun '12

20 Jun '12

My socket in Eiffel will report that it is connected, but when it tries to write to the socket, it will fail and report Connection reset by peer I/O error The syslog shows 1) ... accepted connection from 127.0.0.1:.. 2) connect_blocking: getsockopt A_REMOTE_IP:A_REMOTE_PORT: Connection refused (111) 3) Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket I believe that my socket is connecting locally fine 127.0.0.1:.. in step 1, and then the remote connection via stunnel is failing in step 2, but I have tried to write to the socket in between steps 1 and 2. Is this proper behavior? How can I know the status of the remote connection? Wait a while and then test? Is the socket state really just the state of the local stunnel connection? Should stunnel report a different state (as seen by my socket) until it determines the remote socket state?

1 0

What version of stunnel am I using?
by Dee Ayy 20 Jun '12

20 Jun '12

I don't see a version here stunnel -version 2012.06.20 16:44:05 LOG7[25078:3074172608]: RAND_status claims sufficient entropy for the PRNG 2012.06.20 16:44:05 LOG7[25078:3074172608]: PRNG seeded successfully 2012.06.20 16:44:05 LOG3[25078:3074172608]: /etc/stunnel/stunnel.pem: No such file or directory (2) apt-cache search stunnel on Ubuntu has stunnel4

1 0

Error connecting through IE6
by Karl Kloppenborg 15 Jun '12

15 Jun '12

Hey Stunnel guys! I've got a bit of an issue in which users on ie6 cannot connect through HTTPs to my haproxy cluster, they get a 404 page cannot be displayed. Works fine in all other browsers ;) The logs from Stunnel are: 2012.06.13 01:06:09 LOG7[28347:47884616028640]: local socket: FD=14 allocated (non-blocking mode) 2012.06.13 01:06:09 LOG7[28347:47884616028640]: Service incoming-https accepted FD=14 from [ClientIP]:1208 2012.06.13 01:06:09 LOG7[28347:1078843712]: Service incoming-https started 2012.06.13 01:06:09 LOG7[28347:1078843712]: Option TCP_NODELAY set on local socket 2012.06.13 01:06:09 LOG7[28347:1078843712]: Waiting for a libwrap process 2012.06.13 01:06:09 LOG7[28347:1078843712]: Acquired libwrap process #0 2012.06.13 01:06:09 LOG7[28347:1078843712]: Releasing libwrap process #0 2012.06.13 01:06:09 LOG7[28347:1078843712]: Released libwrap process #0 2012.06.13 01:06:09 LOG7[28347:1078843712]: Service incoming-https permitted by libwrap from [ClientIP]:1208 2012.06.13 01:06:09 LOG5[28347:1078843712]: Service incoming-https accepted connection from [ClientIP]:1208 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): before/accept initialization 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 read client hello A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 write server hello A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 write certificate A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 write server done A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 flush data 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 read client key exchange A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 read finished A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 write change cipher spec A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 write finished A 2012.06.13 01:06:09 LOG7[28347:1078843712]: SSL state (accept): SSLv3 flush data 2012.06.13 01:06:09 LOG7[28347:1078843712]: 1 items in the session cache 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 client connects (SSL_connect()) 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 client connects that finished 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 client renegotiations requested 2012.06.13 01:06:09 LOG7[28347:1078843712]: 1 server connects (SSL_accept()) 2012.06.13 01:06:09 LOG7[28347:1078843712]: 1 server connects that finished 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 server renegotiations requested 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 session cache hits 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 external session cache hits 2012.06.13 01:06:09 LOG7[28347:1078843712]: 1 session cache misses 2012.06.13 01:06:09 LOG7[28347:1078843712]: 0 session cache timeouts 2012.06.13 01:06:09 LOG6[28347:1078843712]: SSL accepted: new session negotiated 2012.06.13 01:06:09 LOG6[28347:1078843712]: Negotiated ciphers: DES-CBC3-SHA SSLv3 Kx=RSA Au=RSA Enc=3DES(168) Mac=SHA1 2012.06.13 01:06:09 LOG7[28347:1078843712]: remote socket: FD=15 allocated (non-blocking mode) 2012.06.13 01:06:09 LOG6[28347:1078843712]: connect_blocking: connecting [HAPROXY IP]:81 2012.06.13 01:06:09 LOG7[28347:1078843712]: connect_blocking: s_poll_wait [HAPROXY IP]:81: waiting 10 seconds 2012.06.13 01:06:09 LOG5[28347:1078843712]: connect_blocking: connected [HAPROXY IP]:81 2012.06.13 01:06:09 LOG5[28347:1078843712]: Service incoming-https connected remote server from [HAPROXY IP]:55823 2012.06.13 01:06:09 LOG7[28347:1078843712]: Remote FD=15 initialized 2012.06.13 01:06:09 LOG7[28347:1078843712]: Option TCP_NODELAY set on remote socket 2012.06.13 01:06:09 LOG5[28347:1078843712]: Error detected on SSL (read) file descriptor: Connection reset by peer (104) 2012.06.13 01:06:09 LOG5[28347:1078843712]: Connection reset: 0 bytes sent to SSL, 320 bytes sent to socket 2012.06.13 01:06:09 LOG7[28347:1078843712]: Service incoming-https finished (0 left) 2012.06.13 01:06:09 LOG7[28347:1078843712]: str_stats: 0 block(s), 0 data byte(s), 0 control byte(s) Could stunnel be at play here or am I looking at the wrong thing? Thanks! Karl. Karl Kloppenborg Programming Ninja Crucial Paradigm Pty Ltd Suite 1 Level 3 104-106 Commonwealth St Surry Hills NSW 2010 Australia 1300 884 839 - Sales & Support (AU Only) <https://support.crucialp.com/> Click here for the Support Desk d: 02 8202 9994 f: 02 92818261 m: 0416 236 908 e: <mailto:[email protected]> karl(a)crucial.com.au Crucial Paradigm is a leading Web Hosting provider that specialises in Cloud solutions. We are commited to keeping our planet green, please reduce, reuse and recycle your office paper. Description: crucial_2012

2 3

Stunnel 4.53 for win32 - without config file
by Ivanko B 14 Jun '12

14 Jun '12

How to bypass reading any config file so that all needed options were fed from command line ? (security reasons)

5 7

Re: [stunnel-users] Getting Stunnel to Work Under Windows 7 64-bit
by Brian Wilkins 14 Jun '12

14 Jun '12

I should note that I have been running stunnel 4.45 on Windows 7 since Oct-2011 with no problems whatsoever. It has been running non-stop on Windows 7 to this date with no problems. I have not upgraded to the latest because I have not been able to have time to test the FIPS changes with my configuration yet. Brian

4 6

stunnel version 4.53 says SSL server needs a certificate on Windows 7?
by Wayne Walter 13 Jun '12

13 Jun '12

I have been using stunnel previous versions just fine. It didn't apparently have the feature of a certificate in SSL server mode. That's alright but not necessary for us as we're simply running a localhost server to tunnel to the remote server. Anyway, I have read the FAQ tutorial and such related to this and tried everything. No mater what I do with the cert or key settings it still gives this same error here's the complete output.... No limit detected for the number of clients stunnel 4.53 on x86-pc-mingw32-gnu platform Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 Reading configuration from file stunnel.conf FIPS mode is enabled Compression not enabled Snagged 64 random bytes from C:/.rnd Wrote 0 new random bytes to C:/.rnd PRNG seeded successfully Initializing service section [FIX] Section FIX: SSL server needs a certificate Server is down And here is the stunnel.conf file contents: ; Certificate/key is needed in server mode and optional in client mode cert = stunnel.pem ;key = stunnel.pem ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 [FIX] accept = 127.0.0.1:5679 connect = 216.52.236.112:5680 TIMEOUTconnect = 5 [FIXLIVE] accept = 127.0.0.1:5680 connect = 216.52.236.185:51581 TIMEOUTconnect = 5 Please not that stunnel came installed with an stunnel.pem file. I tried uncommenting the config line for the key. Also regenerated the key using openssh per instructions. I tried using absolute path to the cert file. Nothing makes any difference. Is this a defect in stunnel? Or am I doing something wrong?

2 1

Re: [stunnel-users] Log rollover
by Michael Curran 11 Jun '12

11 Jun '12

Windows our linux? Linux just add the log file location to the file that are part of rotate.d and thats solved daily. Sent from my Verizon Wireless 4GLTE smartphone. From : Brian Wilkins Subject : [stunnel-users] Log rollover I have noticed my stunnel log has reached 100MB on an unmanned system. Is there an option to cause the stunnel log to rollover and delete the old log file after a pre-defined period of time? If not, I can try adding it to log.c. Brian -----Original Message----- From: Brian Wilkins Sent: 6/11/2012 3:48:22 PM To: stunnel-users(a)stunnel.org Subject: [stunnel-users] Log rollover I have noticed my stunnel log has reached 100MB on an unmanned system. Is there an option to cause the stunnel log to rollover and delete the old log file after a pre-defined period of time? If not, I can try adding it to log.c. Brian

2 1

Log rollover
by Brian Wilkins 11 Jun '12

11 Jun '12

I have noticed my stunnel log has reached 100MB on an unmanned system. Is there an option to cause the stunnel log to rollover and delete the old log file after a pre-defined period of time? If not, I can try adding it to log.c. Brian

1 0

Using stunnel with Brother MFC-8890
by Scott McKeown 08 Jun '12

08 Jun '12

Hi Rolando, Can you please give us a bit more detail. What have you tried doing? How is your network setup? Whats your current STunnel Configuration file settings? Hopefully with this information we should be able to assist. -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org

1 0

Using stunnel with Brother MFC-8890
by Rolando Pineda 07 Jun '12

07 Jun '12

Hi, Someone can help me to use stunnel and set up my Brother MFC-8890 to send email through SSL using the stunnel? Thanks in advanced. -- Saludos, _____________ Rolando Pineda

1 0

stunnel - haproxy setup with protocol = proxy
by Scott McKeown 07 Jun '12

07 Jun '12

Hi Robert, I've been doing some work on both HAProxy and STunnel myself over the last month or so. Your actual configuration files both look fine but one thing that you possibly missed is that you will have needed to have build HAProxy with the TProxy flag enabled, and I'm going to guess that you have also written and applied the Firewall rules for the transparent proxy. I've attached a DRAFT pdf of the work that I have been doing, its a very basic how-to on setting up both STunnel and HAProxy in Transparent mode on a Centos 6.2 system. -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org

2 4

stunnel - haproxy setup with protocol = proxy
by Robert Garcia 07 Jun '12

07 Jun '12

I am trying to setup stunnel with protocol = proxy through haproxy to my apache2 cluster. I have been using haproxy for a while, and wanted to try this before having to go to nginx, or some other proxy. My config works fine as is if I remove the "accept proxy" from the haproxy.cfg and the protocol=proxy from stunnel config, as soon as those are in, I get a 502 bad gateway. My haproxy.cfg: global log 127.0.0.1 local0 log 127.0.0.1 local1 debug #log loghost local0 info maxconn 50000 #chroot /usr/share/haproxy user haproxy group haproxy daemon #debug #quiet defaults log global mode http option httplog option dontlognull option forwardfor retries 3 option redispatch maxconn 50000 contimeout 5000 clitimeout 60000 srvtimeout 300000 stats uri /haproxy_xxxx stats realm Global\ statistics stats auth xxxxxx:xxxxxxx frontend dev-stg bind *:80 mode http timeout client 5m option forwardfor default_backend dev-www frontend dev-stg-ssl bind *:81 accept-proxy mode http option httpclose option forwardfor timeout client 5m default_backend dev-www backend dev-www mode http timeout connect 10s timeout server 600s balance roundrobin #begin_web_config server ws1 10.0.2.10 maxconn 1000 check port 80 #end_web_config stats uri /haproxy_xxxx stats realm Global\ statistics stats auth xxxxxx:xxxxxxx My stunnel config: ; ***************************************************************************** ; * Global Options * ; ***************************************************************************** ; A copy of some devices and system files is needed within the chroot jail ; Chroot conflicts with configuration file reload and many other features chroot = /var/lib/stunnel4/ ; Chroot jail can be escaped if setuid option is not used setuid = stunnel4 setgid = stunnel4 ; PID is created inside the chroot jail pid = /stunnel4.pid ; Debugging stuff (may useful for troubleshooting) debug = 7 output = /var/log/stunnel4/stunnel.log ; ***************************************************************************** ; * Service Defaults (may also be specified in individual service sections) * ; ***************************************************************************** ; Certificate/key is needed in server mode and optional in client mode cert = /usr/local/certs/server.crt key = /usr/local/certs/server.key ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; The following options provide additional security at some performance penalty ; Default ECDH/DH parameters are strong/conservative, so it is quite safe to ; comment out these lines in order to get a performance boost ;options = SINGLE_ECDH_USE ;options = SINGLE_DH_USE ; ***************************************************************************** ; * Service Definitions (remove all services for inetd mode) * ; ***************************************************************************** ; Example SSL server mode services ; Example SSL front-end to a web server [proxy] accept = 443 connect = 127.0.0.1:81 ; "TIMEOUTclose = 0" is a workaround for a design flaw in Microsoft SSL ; It does not use SSL close-notify alert designed to prevent truncation attacks TIMEOUTclose = 0 protocol = proxy ; vim:ft=dosini And here is the syslog for haproxy and stunner (ip address in log and cfgs are changed to protect the innocent ;-) ) Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193127680]: Service [proxy] accepted (FD=3) from 1.2.3.4:35045 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Service [proxy] started Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG5[1737:140557193119488]: Service [proxy] accepted connection from 1.2.3.4:35045 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: connect_blocking: connecting 127.0.0.1:81 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: connect_blocking: s_poll_wait 127.0.0.1:81: waiting 10 seconds Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG5[1737:140557193119488]: connect_blocking: connected 127.0.0.1:81 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG5[1737:140557193119488]: Service [proxy] connected remote server from 127.0.0.1:49010 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Remote socket (FD=8) initialized Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: Server-mode proxy protocol negotiations started Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: -> PROXY TCP4 1.2.3.4 10.0.2.9 35045 443 Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: Server-mode proxy protocol negotiations succeeded Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: SSL accepted: new session negotiated Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: Negotiated TLSv1/SSLv3 ciphersuite: DHE-RSA-AES256-SHA (256-bit encryption) Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: Compression: null, expansion: null Jun 7 07:10:50 localhost haproxy[1710]: 1.2.3.4:35045 [07/Jun/2012:07:10:50.496] dev-stg-ssl dev-www/ws1 214/0/1/-1/216 502 754 - - PH-- 0/0/0/0/0 0/0 "GET / HTTP/1.1" Jun 7 07:10:50 localhost haproxy[1710]: 1.2.3.4:35045 [07/Jun/2012:07:10:50.496] dev-stg-ssl dev-www/ws1 214/0/1/-1/216 502 754 - - PH-- 0/0/0/0/0 0/0 "GET / HTTP/1.1" Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Socket closed on read Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Sending close_notify alert Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG6[1737:140557193119488]: SSL_shutdown successfully sent close_notify alert Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG3[1737:140557193119488]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG5[1737:140557193119488]: Connection closed: 204 byte(s) sent to SSL, 137 byte(s) sent to socket Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Remote socket (FD=8) closed Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Local socket (FD=3) closed Jun 7 07:10:50 ec2-204-236-129-168 stunnel: LOG7[1737:140557193119488]: Service [proxy] finished (0 left) 1.2.3.4 = my external ip I am testing with 10.0.2.9 = haproxy/stunnel server 10.0.2.10 = my apache server Any ideas greatly appreciated. -- Robert Garcia BigHead Technology 15520 Coutolenc Rd Magalia, Ca 95954 ph: 530.645.4040 x222 fax: 530.645.4040 rgarcia(a)bighead.net (mailto:[email protected]) - http://bighead.net/

1 0

Re: [stunnel-users] Outlook and stunnel
by James Devine 05 Jun '12

05 Jun '12

I'm using stunnel as a reverse proxy. I have an smtp server smtp1 and an stunnel server proxy1. Clients connect to and negotiate ssl on proxy1 which then connects to smtp1 via a plaintext connection. stunnel does not reside on the client. If I connect the client directly to smtp1 via ssl it works fine. On Tue, Jun 5, 2012 at 12:20 PM, Pierre DELAAGE <delaage.pierre(a)free.fr>wrote: > Hmmm if you are using stunnel on client side (as suggested by your > correction) it is that YOU DO NOT WANT TO USE SSL OPTION in OUTLOOK. > > because stunnel will act as an "almost transparent' ssl tunnel. > > So in outlook : uncheck ssl option and give "localhost" as your smtp > server. > > and adapt local port according to your stunnel conf. > > Apart from that : I use stunnel on the server ONLY, with self signed > certificate coming from openssl, > and outlook configured as ssl client is working. > SSLversion = all is always GOOD > > works with stunnel 4.20 on linux mandriva 2008, outlook 2007 > > Pierre > > > > Le 05/06/2012 20:08, James Devine a écrit : > > > On Tue, Jun 5, 2012 at 10:52 AM, James Devine <fxmulder(a)gmail.com> wrote: > >> I am trying to setup stunnel to ssl proxy mail to an smtp server and this >> seems to work fine for thunderbird but when I try using outlook 2010 to >> connect via ssl I get the error: >> >> Send test e-mail message: Your server does not support the connection >> encryption type you have specified. Try changing the encryption method. >> >> For sslVersion I have the option of SSLv3 and TLSv1, all and SSLv2 do >> not seem to work so I'm not sure if that is the problem >> >> Anyone else run in to this or know what I might do to resolve it? >> > > I can get it to work if I setup ssl on the end server directly and bypass > stunnel > > > _______________________________________________ > stunnel-users mailing [email protected]://stunnel.mirt.net/mailman/listinfo/stunnel-users > > >

1 0

Outlook and stunnel
by James Devine 05 Jun '12

05 Jun '12

I am trying to setup stunnel to ssl proxy mail to an smtp server and this seems to work fine for thunderbird but when I try using outlook 2010 to connect via ssl I get the error: Send test e-mail message: Your server does not support the connection encryption type you have specified. Try changing the encryption method. For sslVersion I have the option of SSLv3 and TLSv1, all and SSLv2 do not seem to work so I'm not sure if that is the problem Anyone else run in to this or know what I might do to resolve it?

1 1

stunnel 4.53 released
by Michal Trojnara 03 Jun '12

03 Jun '12

Dear Users, I have released version 4.53 of stunnel. This is major a bugfix release. Upgrade is highly recommended. The ChangeLog entry: Version 4.53, 2012.03.19, urgency: MEDIUM: * New features - Added client-mode "sni" option to directly control the value of TLS Server Name Indication (RFC 3546) extension. - Added support for IP_FREEBIND socket option with a pached Linux kernel. - Glibc-specific dynamic allocation tuning was applied to help unused memory deallocation. - Non-blocking OCSP implementation. * Bugfixes - Compilation fixes for old versions of OpenSSL (tested against 0.9.6). - Usage of uninitialized variables fixed in exec+connect services. - Occasional logging subsystem crash with exec+connect services. - OpenBSD compilation fix (thx to Michele Orru'). - Session id context initialized with session name rather than a constant. - Fixed handling of a rare inetd mode use case, where either stdin or stdout is a socket, but not both of them at the same time. - Fixed missing OPENSSL_Applink http://www.openssl.org/support/faq.html#PROG2 - Fixed crash on termination with FORK threading model. - Fixed dead canary after configuration reload with open connections. - Fixed missing file descriptors passed to local mode processes. - Fixed required jmp_buf alignment on Itanium platform. - Removed creating /dev/zero in the chroot jail on Solaris platform. - Fixed detection of WSAECONNREFUSED Winsock error. - Missing Microsoft.VC90.CRT.manifest added to Windows installer. Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.53.tar.gz: 3e640aa4c96861d10addba758b66e99e7c5aec8697764f2a59ca2268901b8e57 Best regards, Mike

3 2

Re: [stunnel-users] BEAST Attack
by Scott McKeown 31 May '12

31 May '12

Hi Mike, Thank you for your input. I'll rebuild today and retest. Our company openly supports Open Source projects that we use and we will continue to do so. However, since we are still in a R&D position with STunnel at the moment I thought it would be better to continue to use the users group. I'll post again once I've rebuilt and tested, which might not be until the end of next week now as we have an nice extended weekend in the UK for the Golden Jubilee which is nice. ~Yours, Scott -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org

1 0

Re: [stunnel-users] BEAST Attack
by Scott McKeown 30 May '12

30 May '12

Hi Michal, Thanks for following this up. I'm using the latest build of STunnel v4.53 as shown below (I check the site once a week just to make sure too) # stunnel -version stunnel 4.53 on x86_64-unknown-linux-gnu platform Compiled/running with OpenSSL 1.0.0-fips 29 Mar 2010 Threading:PTHREAD SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:POLL+IPv6 Global options: debug = daemon.notice pid = /usr/local/var/run/stunnel/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options: ciphers = FIPS (with "fips = yes") ciphers = ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH (with "fips = no") session = 300 seconds sslVersion = TLSv1 (with "fips = yes") sslVersion = TLSv1 for client, all for server (with "fips = no") stack = 65536 bytes TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none I've also included a copy of my stunnel.cfg file below: # more /etc/stunnel/stunnel.cfg # STunnel configuration file generated by loadbalancer.org appliance setgid = nobody pid = /stunnel.pid debug = 0 [S1] accept = 192.168.82.182:443 connect = 192.168.82.181:81 cert = /etc/loadbalancer.org/certs/S1.pem ciphers = RC4:HIGH:!MD5:!aNULL options = NO_SSLv2 protocol = proxy I'm looking to include the STunnel Product within our Loadbalancer Appliance in our next upcoming release but with everyone now using the SSL checker that I mentioned in one of my last e-Mails more customers are becoming concerned about MITM Attacks etc. so I would really like to get this solved before I move forward with the project. Oh, I guess I should also mention that this is running on a Centos 6.2 box. ~Yours, Scott

2 1

BEAST Attack
by Scott McKeown 29 May '12

29 May '12

Hi All, Has anyone looked at the current issue with the BEAST Attack. I'm looking at https://www.ssllabs.com/ssltest/index.html which can be used for testing SSL Certificates I also use Pound Proxy which I have now patched and this has removed the threat. However, I don't seem to be able to get the same result from a STunnel installation. If anyone can give some advice that would be great. ~Yours, Scott

3 5

limit to number of services
by Terren Suydam 25 May '12

25 May '12

Hi there, I seem to be hitting a limit on the number of stunnel services I can run simultaneously. According to the log, they appear to set up without any issues, but after 64 services they don't pass traffic. Is this something stunnel itself limits, or is it an OS limitation? I am running the latest windows build on Windows Server 2008. Either way, is there an easy way to increase the number of services? Thanks, Terren

1 0

Stunnel quitted unexpectedly repeated for a number of times
by Im Q 24 May '12

24 May '12

Hi all, We have encountered a strange situation that stunnel We have the following setup in our production servers. > Windows [ ... -> Apache -> Stunnel 4.50 ] --> AIX [Stunnel 4.50 -> JBoss] * As we had experienced the Stunnel in AIX died in a random time during testing stage, we added a cron job to start Stunnel in case stunnel disappeared. Recently, in our production servers, the stunnel disappeared and being started by corn repeatedly during a short period of time in the same day. We so far encounter similar problem for 2 times. Below are the restart time of the most recent incident. > 09:22:00,09:38:00,09:45:00, > 10:24:00,10:34:00,10:50:00, > 11:06:00,11:16:01,11:17:00,11:19:00,11:22:00,11:23:00,11:29:01,11:32:00,11:34:01,11:35:00,11:39:01 We found that in the logs, they always ended with the following: > 2012.05.23 11:16:03 LOG7[12517524:1]: Dispatching signals from the signal pipe > ... > 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD > ...(same message repeatly for serveral time) > 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD Here is the active options in config file: [Windows Side] > debug = 7 > output = D:\app-logs\stunnel\stunnel.log > verify = 0 > options = NO_SSLv2 > client = yes > taskbar = no > [prdweb01_out_app01] > accept = PRDWEB01:18009 > connect = PRDAPP01:18010 > [prdweb01_out_app02] > accept = PRDWEB01:18019 > connect = PRDAPP02:18010 [AIX Side] > pid = /opt/stunnel/4.50/prd/stunnel0-app/stunnel.pid > debug = 7 > output = /opt/stunnel/4.50/prd/stunnel0-app/log/stunnel.log > cert = /opt/stunnel/4.50/prd/stunnel0-app/PRD.certnew-b64.cer > key = /opt/stunnel/4.50/prd/stunnel0-app/PRD.private.key > options = NO_SSLv2 > [prdweb_in] > accept = PRDAPP01:18010 > connect = PRDAPP01:8009 Start up command > nohup stunnel /opt/stunnel/4.50/prd/stunnel0-app/stunnel-server.conf Attached at the end is the one of the log during the incident. Is there any suggestion on how to find out the cause of the problem? What are the possible causes that would make it disappeared after those processing of SIGCHLD signal? What may caused the signal dispatching other than killing them manually for shutdown? Thank you very much! Best Regards, Jacky -- LOG FILE CONTENT BELOW -- 2012.05.23 11:16:01 LOG7[11862064:1]: Clients allowed=31999 2012.05.23 11:16:01 LOG5[11862064:1]: stunnel 4.50 on powerpc-ibm-aix6.1.0.0 platform 2012.05.23 11:16:01 LOG5[11862064:1]: Compiled/running with OpenSSL 0.9.8m 25 Feb 2010 2012.05.23 11:16:01 LOG5[11862064:1]: Threading:PTHREAD SSL:ENGINE Auth:none Sockets:POLL,IPv6 2012.05.23 11:16:01 LOG5[11862064:1]: Reading configuration from file /opt/stunnel/4.50/prd/stunnel0-app/stunnel-server.conf 2012.05.23 11:16:01 LOG6[11862064:1]: Unable to retrieve any random data from /home/appadmin/.rnd 2012.05.23 11:16:01 LOG7[11862064:1]: Wrote 0 new random bytes to /home/appadmin/.rnd 2012.05.23 11:16:01 LOG7[11862064:1]: PRNG seeded successfully 2012.05.23 11:16:01 LOG6[11862064:1]: Initializing SSL context for service prdweb_in 2012.05.23 11:16:01 LOG4[11862064:1]: Insecure file permissions on /opt/stunnel/4.50/prd/stunnel0-app/PRD.private.key 2012.05.23 11:16:01 LOG7[11862064:1]: Certificate: /opt/stunnel/4.50/prd/stunnel0-app/PRD.certnew-b64.cer 2012.05.23 11:16:01 LOG7[11862064:1]: Certificate loaded 2012.05.23 11:16:01 LOG7[11862064:1]: Key file: /opt/stunnel/4.50/prd/stunnel0-app/PRD.private.key 2012.05.23 11:16:01 LOG7[11862064:1]: Private key loaded 2012.05.23 11:16:01 LOG7[11862064:1]: Could not load DH parameters from /opt/stunnel/4.50/prd/stunnel0-app/PRD.certnew-b64.cer 2012.05.23 11:16:01 LOG7[11862064:1]: Using hardcoded DH parameters 2012.05.23 11:16:01 LOG7[11862064:1]: DH initialized with 2048-bit key 2012.05.23 11:16:01 LOG7[11862064:1]: SSL options set: 0x01000004 2012.05.23 11:16:01 LOG6[11862064:1]: SSL context initialized 2012.05.23 11:16:01 LOG5[11862064:1]: Configuration successful 2012.05.23 11:16:01 LOG7[11862064:1]: Option SO_REUSEADDR set on accept socket 2012.05.23 11:16:01 LOG7[11862064:1]: Service prdweb_in bound to 10.18.7.71:18010 2012.05.23 11:16:01 LOG7[11862064:1]: Service prdweb_in opened FD=7 2012.05.23 11:16:01 LOG7[12517524:1]: Created pid file /opt/stunnel/4.50/prd/stunnel0-app/stunnel.pid 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=0 from 10.18.7.11:61657 2012.05.23 11:16:01 LOG7[12517524:258]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:258]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:258]: Service prdweb_in accepted connection from 10.18.7.11:61657 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=1 from 10.18.7.11:61685 2012.05.23 11:16:01 LOG7[12517524:515]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:515]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:515]: Service prdweb_in accepted connection from 10.18.7.11:61685 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=2 from 10.18.7.11:61667 2012.05.23 11:16:01 LOG7[12517524:772]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:772]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:772]: Service prdweb_in accepted connection from 10.18.7.11:61667 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=9 from 10.18.7.11:61659 2012.05.23 11:16:01 LOG7[12517524:1029]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:1029]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:1029]: Service prdweb_in accepted connection from 10.18.7.11:61659 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=10 from 10.18.7.12:64270 2012.05.23 11:16:01 LOG7[12517524:1286]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:1286]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:1286]: Service prdweb_in accepted connection from 10.18.7.12:64270 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=11 from 10.18.7.11:61669 2012.05.23 11:16:01 LOG7[12517524:1543]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:1543]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:1543]: Service prdweb_in accepted connection from 10.18.7.11:61669 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=12 from 10.18.7.12:64268 2012.05.23 11:16:01 LOG7[12517524:1800]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:1800]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:1800]: Service prdweb_in accepted connection from 10.18.7.12:64268 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=13 from 10.18.7.11:61671 2012.05.23 11:16:01 LOG7[12517524:2057]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:2057]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:2057]: Service prdweb_in accepted connection from 10.18.7.11:61671 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=14 from 10.18.7.11:61673 2012.05.23 11:16:01 LOG7[12517524:2314]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:2314]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:2314]: Service prdweb_in accepted connection from 10.18.7.11:61673 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=15 from 10.18.7.11:61677 2012.05.23 11:16:01 LOG7[12517524:2571]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:2571]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:2571]: Service prdweb_in accepted connection from 10.18.7.11:61677 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=16 from 10.18.7.11:61676 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=18 from 10.18.7.12:64272 2012.05.23 11:16:01 LOG7[12517524:3085]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:3085]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:3085]: Service prdweb_in accepted connection from 10.18.7.12:64272 2012.05.23 11:16:01 LOG7[12517524:2828]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:2828]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:2828]: Service prdweb_in accepted connection from 10.18.7.11:61676 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=17 from 10.18.7.11:61661 2012.05.23 11:16:01 LOG7[12517524:3342]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:3342]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:3342]: Service prdweb_in accepted connection from 10.18.7.11:61661 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=19 from 10.18.7.11:61687 2012.05.23 11:16:01 LOG7[12517524:3599]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:3599]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:3599]: Service prdweb_in accepted connection from 10.18.7.11:61687 2012.05.23 11:16:01 LOG6[12517524:1286]: SSL accepted: new session negotiated 2012.05.23 11:16:01 LOG6[12517524:1286]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:01 LOG6[12517524:1286]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:1286]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:1286]: Service prdweb_in connected remote server from 10.18.7.71:56505 2012.05.23 11:16:01 LOG7[12517524:1286]: Remote FD=20 initialized 2012.05.23 11:16:01 LOG7[12517524:1286]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=21 from 10.18.7.11:61663 2012.05.23 11:16:01 LOG7[12517524:3856]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:3856]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:3856]: Service prdweb_in accepted connection from 10.18.7.11:61663 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=22 from 10.18.7.11:61665 2012.05.23 11:16:01 LOG7[12517524:4113]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=23 from 10.18.7.12:64274 2012.05.23 11:16:01 LOG7[12517524:4370]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:4113]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG7[12517524:4370]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:4370]: Service prdweb_in accepted connection from 10.18.7.12:64274 2012.05.23 11:16:01 LOG5[12517524:4113]: Service prdweb_in accepted connection from 10.18.7.11:61665 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=24 from 10.18.7.11:61681 2012.05.23 11:16:01 LOG7[12517524:4627]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:4627]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:4627]: Service prdweb_in accepted connection from 10.18.7.11:61681 2012.05.23 11:16:01 LOG6[12517524:1800]: SSL accepted: new session negotiated 2012.05.23 11:16:01 LOG6[12517524:1800]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:01 LOG6[12517524:1800]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:1800]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:1800]: Service prdweb_in connected remote server from 10.18.7.71:35492 2012.05.23 11:16:01 LOG7[12517524:1800]: Remote FD=25 initialized 2012.05.23 11:16:01 LOG7[12517524:1800]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=26 from 10.18.7.11:61689 2012.05.23 11:16:01 LOG7[12517524:4884]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:4884]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:4884]: Service prdweb_in accepted connection from 10.18.7.11:61689 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=27 from 10.18.7.12:64276 2012.05.23 11:16:01 LOG7[12517524:5141]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:5141]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:5141]: Service prdweb_in accepted connection from 10.18.7.12:64276 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=28 from 10.18.7.12:64278 2012.05.23 11:16:01 LOG7[12517524:5398]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:5398]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:5398]: Service prdweb_in accepted connection from 10.18.7.12:64278 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=29 from 10.18.7.12:64280 2012.05.23 11:16:01 LOG7[12517524:5655]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:5655]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:5655]: Service prdweb_in accepted connection from 10.18.7.12:64280 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=30 from 10.18.7.11:61680 2012.05.23 11:16:01 LOG7[12517524:5912]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:5912]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:5912]: Service prdweb_in accepted connection from 10.18.7.11:61680 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=31 from 10.18.7.12:64282 2012.05.23 11:16:01 LOG7[12517524:6169]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:6169]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:6169]: Service prdweb_in accepted connection from 10.18.7.12:64282 2012.05.23 11:16:01 LOG6[12517524:3085]: SSL accepted: new session negotiated 2012.05.23 11:16:01 LOG6[12517524:3085]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:01 LOG6[12517524:3085]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:3085]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:3085]: Service prdweb_in connected remote server from 10.18.7.71:52373 2012.05.23 11:16:01 LOG7[12517524:3085]: Remote FD=32 initialized 2012.05.23 11:16:01 LOG7[12517524:3085]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=33 from 10.18.7.11:61683 2012.05.23 11:16:01 LOG7[12517524:6426]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:6426]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:6426]: Service prdweb_in accepted connection from 10.18.7.11:61683 2012.05.23 11:16:01 LOG7[12517524:1]: Service prdweb_in accepted FD=34 from 10.18.7.12:64284 2012.05.23 11:16:01 LOG7[12517524:6683]: Service prdweb_in started 2012.05.23 11:16:01 LOG7[12517524:6683]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:01 LOG5[12517524:6683]: Service prdweb_in accepted connection from 10.18.7.12:64284 2012.05.23 11:16:01 LOG6[12517524:258]: SSL accepted: new session negotiated 2012.05.23 11:16:01 LOG6[12517524:258]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:01 LOG6[12517524:258]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:258]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:01 LOG5[12517524:258]: Service prdweb_in connected remote server from 10.18.7.71:33167 2012.05.23 11:16:01 LOG7[12517524:258]: Remote FD=35 initialized 2012.05.23 11:16:01 LOG7[12517524:258]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:4370]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:4370]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:4370]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:4370]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:4370]: Service prdweb_in connected remote server from 10.18.7.71:53609 2012.05.23 11:16:02 LOG7[12517524:4370]: Remote FD=36 initialized 2012.05.23 11:16:02 LOG7[12517524:4370]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:5398]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:5398]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:5398]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:5398]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:5398]: Service prdweb_in connected remote server from 10.18.7.71:40822 2012.05.23 11:16:02 LOG7[12517524:5398]: Remote FD=37 initialized 2012.05.23 11:16:02 LOG7[12517524:5398]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=38 from 10.18.7.11:61691 2012.05.23 11:16:02 LOG7[12517524:6940]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:6940]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:6940]: Service prdweb_in accepted connection from 10.18.7.11:61691 2012.05.23 11:16:02 LOG6[12517524:5655]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:5655]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:5655]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:5655]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:5655]: Service prdweb_in connected remote server from 10.18.7.71:53430 2012.05.23 11:16:02 LOG7[12517524:5655]: Remote FD=39 initialized 2012.05.23 11:16:02 LOG7[12517524:5655]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=40 from 10.18.7.12:64286 2012.05.23 11:16:02 LOG7[12517524:7197]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:7197]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:7197]: Service prdweb_in accepted connection from 10.18.7.12:64286 2012.05.23 11:16:02 LOG7[12517524:5655]: SSL closed on SSL_read 2012.05.23 11:16:02 LOG7[12517524:5655]: Sending socket write shutdown 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=41 from 10.18.7.11:61693 2012.05.23 11:16:02 LOG7[12517524:7454]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:7454]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:7454]: Service prdweb_in accepted connection from 10.18.7.11:61693 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=42 from 10.18.7.11:61695 2012.05.23 11:16:02 LOG7[12517524:7711]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:7711]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:7711]: Service prdweb_in accepted connection from 10.18.7.11:61695 2012.05.23 11:16:02 LOG6[12517524:515]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:515]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:515]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:515]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:515]: Service prdweb_in connected remote server from 10.18.7.71:50558 2012.05.23 11:16:02 LOG7[12517524:515]: Remote FD=43 initialized 2012.05.23 11:16:02 LOG7[12517524:515]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:1029]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:1029]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:1029]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:1029]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:1029]: Service prdweb_in connected remote server from 10.18.7.71:57414 2012.05.23 11:16:02 LOG7[12517524:1029]: Remote FD=44 initialized 2012.05.23 11:16:02 LOG7[12517524:1029]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=45 from 10.18.7.12:64288 2012.05.23 11:16:02 LOG7[12517524:7968]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:7968]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:7968]: Service prdweb_in accepted connection from 10.18.7.12:64288 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=46 from 10.18.7.12:64290 2012.05.23 11:16:02 LOG7[12517524:8225]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:8225]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:8225]: Service prdweb_in accepted connection from 10.18.7.12:64290 2012.05.23 11:16:02 LOG6[12517524:772]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:772]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:772]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:772]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:772]: Service prdweb_in connected remote server from 10.18.7.71:33957 2012.05.23 11:16:02 LOG7[12517524:772]: Remote FD=47 initialized 2012.05.23 11:16:02 LOG7[12517524:772]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:8225]: SSL accepted: previous session reused 2012.05.23 11:16:02 LOG6[12517524:8225]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:8225]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG6[12517524:7968]: SSL accepted: previous session reused 2012.05.23 11:16:02 LOG5[12517524:8225]: Service prdweb_in connected remote server from 10.18.7.71:36648 2012.05.23 11:16:02 LOG6[12517524:7968]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG7[12517524:8225]: Remote FD=48 initialized 2012.05.23 11:16:02 LOG7[12517524:8225]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG5[12517524:7968]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:7968]: Service prdweb_in connected remote server from 10.18.7.71:38529 2012.05.23 11:16:02 LOG7[12517524:7968]: Remote FD=49 initialized 2012.05.23 11:16:02 LOG7[12517524:7968]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=50 from 10.18.7.11:61697 2012.05.23 11:16:02 LOG7[12517524:8482]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:8482]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:8482]: Service prdweb_in accepted connection from 10.18.7.11:61697 2012.05.23 11:16:02 LOG6[12517524:3599]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:3599]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:3599]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:3599]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:3599]: Service prdweb_in connected remote server from 10.18.7.71:65426 2012.05.23 11:16:02 LOG7[12517524:3599]: Remote FD=51 initialized 2012.05.23 11:16:02 LOG7[12517524:3599]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:3856]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:3856]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:3856]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:3856]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:3856]: Service prdweb_in connected remote server from 10.18.7.71:51278 2012.05.23 11:16:02 LOG7[12517524:3856]: Remote FD=52 initialized 2012.05.23 11:16:02 LOG7[12517524:3856]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:3856]: SSL closed on SSL_read 2012.05.23 11:16:02 LOG7[12517524:3856]: Sending socket write shutdown 2012.05.23 11:16:02 LOG7[12517524:4370]: SSL closed on SSL_read 2012.05.23 11:16:02 LOG7[12517524:4370]: Sending socket write shutdown 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=53 from 10.18.7.11:61699 2012.05.23 11:16:02 LOG7[12517524:8739]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:8739]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:8739]: Service prdweb_in accepted connection from 10.18.7.11:61699 2012.05.23 11:16:02 LOG6[12517524:4113]: SSL accepted: new session negotiated 2012.05.23 11:16:02 LOG6[12517524:4113]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:02 LOG6[12517524:4113]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:4113]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:4113]: Service prdweb_in connected remote server from 10.18.7.71:33279 2012.05.23 11:16:02 LOG7[12517524:4113]: Remote FD=54 initialized 2012.05.23 11:16:02 LOG7[12517524:4113]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG6[12517524:8482]: SSL accepted: previous session reused 2012.05.23 11:16:02 LOG7[12517524:4113]: SSL closed on SSL_read 2012.05.23 11:16:02 LOG7[12517524:4113]: Sending socket write shutdown 2012.05.23 11:16:02 LOG6[12517524:8482]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:8482]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:02 LOG5[12517524:8482]: Service prdweb_in connected remote server from 10.18.7.71:50727 2012.05.23 11:16:02 LOG7[12517524:8482]: Remote FD=55 initialized 2012.05.23 11:16:02 LOG7[12517524:8482]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=56 from 10.18.7.11:61701 2012.05.23 11:16:02 LOG7[12517524:8996]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:8996]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:8996]: Service prdweb_in accepted connection from 10.18.7.11:61701 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=57 from 10.18.7.11:61703 2012.05.23 11:16:02 LOG7[12517524:9253]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:9253]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:9253]: Service prdweb_in accepted connection from 10.18.7.11:61703 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=58 from 10.18.7.11:61705 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=59 from 10.18.7.11:61707 2012.05.23 11:16:02 LOG7[12517524:9510]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:9510]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:9510]: Service prdweb_in accepted connection from 10.18.7.11:61705 2012.05.23 11:16:02 LOG7[12517524:9767]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:9767]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:9767]: Service prdweb_in accepted connection from 10.18.7.11:61707 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=60 from 10.18.7.11:61709 2012.05.23 11:16:02 LOG7[12517524:10024]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:10024]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:10024]: Service prdweb_in accepted connection from 10.18.7.11:61709 2012.05.23 11:16:02 LOG7[12517524:1]: Service prdweb_in accepted FD=61 from 10.18.7.12:64292 2012.05.23 11:16:02 LOG7[12517524:10281]: Service prdweb_in started 2012.05.23 11:16:02 LOG7[12517524:10281]: Option TCP_NODELAY set on local socket 2012.05.23 11:16:02 LOG5[12517524:10281]: Service prdweb_in accepted connection from 10.18.7.12:64292 2012.05.23 11:16:03 LOG6[12517524:5912]: SSL accepted: new session negotiated 2012.05.23 11:16:03 LOG6[12517524:5912]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2012.05.23 11:16:03 LOG6[12517524:5912]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:5912]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:5912]: Service prdweb_in connected remote server from 10.18.7.71:59860 2012.05.23 11:16:03 LOG7[12517524:5912]: Remote FD=62 initialized 2012.05.23 11:16:03 LOG7[12517524:5912]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:8739]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:8739]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:8739]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:8739]: Service prdweb_in connected remote server from 10.18.7.71:33186 2012.05.23 11:16:03 LOG7[12517524:8739]: Remote FD=63 initialized 2012.05.23 11:16:03 LOG7[12517524:8739]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:8996]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:8996]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:8996]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:8996]: Service prdweb_in connected remote server from 10.18.7.71:46952 2012.05.23 11:16:03 LOG7[12517524:8996]: Remote FD=64 initialized 2012.05.23 11:16:03 LOG7[12517524:8996]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:9510]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:9510]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9510]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9510]: Service prdweb_in connected remote server from 10.18.7.71:48237 2012.05.23 11:16:03 LOG7[12517524:9510]: Remote FD=65 initialized 2012.05.23 11:16:03 LOG7[12517524:9510]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:9253]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:9253]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9253]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9253]: Service prdweb_in connected remote server from 10.18.7.71:54984 2012.05.23 11:16:03 LOG7[12517524:9253]: Remote FD=66 initialized 2012.05.23 11:16:03 LOG7[12517524:9253]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:9767]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:9767]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9767]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:9767]: Service prdweb_in connected remote server from 10.18.7.71:33305 2012.05.23 11:16:03 LOG7[12517524:9767]: Remote FD=67 initialized 2012.05.23 11:16:03 LOG7[12517524:9767]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:10024]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:10024]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:10024]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:10024]: Service prdweb_in connected remote server from 10.18.7.71:48123 2012.05.23 11:16:03 LOG6[12517524:7197]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:7197]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:7197]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:7197]: Service prdweb_in connected remote server from 10.18.7.71:38228 2012.05.23 11:16:03 LOG7[12517524:7197]: Remote FD=69 initialized 2012.05.23 11:16:03 LOG7[12517524:7197]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:6683]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:6683]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:6683]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:6683]: Service prdweb_in connected remote server from 10.18.7.71:51522 2012.05.23 11:16:03 LOG7[12517524:6683]: Remote FD=70 initialized 2012.05.23 11:16:03 LOG7[12517524:6683]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG6[12517524:10281]: SSL accepted: previous session reused 2012.05.23 11:16:03 LOG6[12517524:10281]: connect_blocking: connecting 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:10281]: connect_blocking: connected 10.18.7.71:8009 2012.05.23 11:16:03 LOG5[12517524:10281]: Service prdweb_in connected remote server from 10.18.7.71:51109 2012.05.23 11:16:03 LOG7[12517524:10281]: Remote FD=71 initialized 2012.05.23 11:16:03 LOG7[12517524:10281]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG7[12517524:10024]: Remote FD=68 initialized 2012.05.23 11:16:03 LOG7[12517524:1]: Dispatching signals from the signal pipe 2012.05.23 11:16:03 LOG7[12517524:10024]: Option TCP_NODELAY set on remote socket 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD 2012.05.23 11:16:03 LOG7[12517524:1]: Processing SIGCHLD

1 0

Re: [stunnel-users] Stunnel not working
by Ludolf Holzheid 21 May '12

21 May '12

On Mon, 2012-05-21 18:09:35 +1000, Peter Connor wrote: > > Hi > I tried to reload stunnel.conf but I received error message says "Stunnel server is down due to error. You need to exit and correct the problem. Click OK to see the error log window". So I looked in error log window, it says: > "Server is downReading configuration from file stunnel.confFIPS mode is enabledCompression not enabledSnagged 64 random bytes from C:/.rndWrote 1024 new random bytes to C:/.rndPRNG seeded successfullyLine 66: "connect secure.giganews.com:563": No '=' found > Server is down" > My operating system windows home XP. Any ideas how to fix this problem. Please help. Thanks > Peter Peter, I don't know why you are asking me and not the stunnel users list. Anyway, it seems to be what the error log says: Line 66 of your stunnel.conf is lacking an equal sign. HTH, Ludolf -- --------------------------------------------------------------- Ludolf Holzheid Tel: +49 621 339960 Bihl+Wiedemann GmbH Fax: +49 621 3392239 Floßwörthstraße 41 e-mail: lholzheid(a)bihl-wiedemann.de D-68199 Mannheim, Germany ---------------------------------------------------------------

1 0

First message flows through second one does not
by George Cardenas 19 May '12

19 May '12

I been chasing my tail a few days now reading through every post and searching in the internet how to work around this issue. The first message will flow though but any other messages after that wont. The log doesn't tell me anything besides that the first attempt sent more bytes than the second attempt. Can someone see anything else I might have overlooked? 2012.05.18 12:07:14 LOG7[2236:3940]: Service [SMTP Outgoing] accepted (FD=360) from 127.0.0.1:1638 2012.05.18 12:07:14 LOG7[2236:3940]: Creating a new thread 2012.05.18 12:07:14 LOG7[2236:3940]: New thread created 2012.05.18 12:07:14 LOG7[2236:580]: Service [SMTP Outgoing] started 2012.05.18 12:07:14 LOG5[2236:580]: Service [SMTP Outgoing] accepted connection from 127.0.0.1:1638 2012.05.18 12:07:14 LOG6[2236:580]: connect_blocking: connecting 157.56.234.134:587 2012.05.18 12:07:14 LOG7[2236:580]: connect_blocking: s_poll_wait 157.56.234.134:587: waiting 10 seconds 2012.05.18 12:07:14 LOG5[2236:580]: connect_blocking: connected 157.56.234.134:587 2012.05.18 12:07:14 LOG5[2236:580]: Service [SMTP Outgoing] connected remote server from 10.0.0.65:1639 2012.05.18 12:07:14 LOG7[2236:580]: Remote socket (FD=372) initialized 2012.05.18 12:07:14 LOG6[2236:580]: Client-mode smtp protocol negotiations started 2012.05.18 12:07:14 LOG7[2236:580]: <- 220 pod51011.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 18 May 2012 16:07:13 +0000 2012.05.18 12:07:14 LOG7[2236:580]: -> 220 pod51011.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 18 May 2012 16:07:13 +0000 2012.05.18 12:07:14 LOG7[2236:580]: -> EHLO localhost 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-pod51011.outlook.com Hello [65.23.214.191] 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-SIZE 36700160 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-PIPELINING 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-DSN 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-ENHANCEDSTATUSCODES 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-STARTTLS 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-AUTH 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-8BITMIME 2012.05.18 12:07:14 LOG7[2236:580]: <- 250-BINARYMIME 2012.05.18 12:07:14 LOG7[2236:580]: <- 250 CHUNKING 2012.05.18 12:07:14 LOG7[2236:580]: -> STARTTLS 2012.05.18 12:07:14 LOG7[2236:580]: <- 220 2.0.0 SMTP server ready 2012.05.18 12:07:14 LOG6[2236:580]: Client-mode smtp protocol negotiations succeeded 2012.05.18 12:07:15 LOG6[2236:580]: SSL connected: new session negotiated 2012.05.18 12:07:15 LOG6[2236:580]: Negotiated TLSv1/SSLv3 ciphersuite: AES128-SHA (128-bit encryption) 2012.05.18 12:07:15 LOG6[2236:580]: Compression: null, expansion: null 2012.05.18 12:07:18 LOG7[2236:580]: SSL socket closed on SSL_read 2012.05.18 12:07:18 LOG7[2236:580]: Sent socket write shutdown 2012.05.18 12:07:18 LOG5[2236:580]: Connection closed: 1498 byte(s) sent to SSL, 498 byte(s) sent to socket 2012.05.18 12:07:18 LOG7[2236:580]: Remote socket (FD=372) closed 2012.05.18 12:07:18 LOG7[2236:580]: Local socket (FD=360) closed 2012.05.18 12:07:18 LOG7[2236:580]: Service [SMTP Outgoing] finished (0 left) 2012.05.18 12:07:18 LOG7[2236:580]: str_stats: 12 block(s), 298 data byte(s), 504 control byte(s) 2012.05.18 12:08:05 LOG7[2236:3940]: Service [SMTP Outgoing] accepted (FD=336) from 127.0.0.1:1644 2012.05.18 12:08:05 LOG7[2236:3940]: Creating a new thread 2012.05.18 12:08:05 LOG7[2236:3940]: New thread created 2012.05.18 12:08:05 LOG7[2236:4044]: Service [SMTP Outgoing] started 2012.05.18 12:08:05 LOG5[2236:4044]: Service [SMTP Outgoing] accepted connection from 127.0.0.1:1644 2012.05.18 12:08:05 LOG6[2236:4044]: connect_blocking: connecting 157.56.236.118:587 2012.05.18 12:08:05 LOG7[2236:4044]: connect_blocking: s_poll_wait 157.56.236.118:587: waiting 10 seconds 2012.05.18 12:08:05 LOG5[2236:4044]: connect_blocking: connected 157.56.236.118:587 2012.05.18 12:08:05 LOG5[2236:4044]: Service [SMTP Outgoing] connected remote server from 10.0.0.65:1645 2012.05.18 12:08:05 LOG7[2236:4044]: Remote socket (FD=376) initialized 2012.05.18 12:08:05 LOG6[2236:4044]: Client-mode smtp protocol negotiations started 2012.05.18 12:08:05 LOG7[2236:4044]: <- 220 pod51011.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 18 May 2012 16:08:04 +0000 2012.05.18 12:08:05 LOG7[2236:4044]: -> 220 pod51011.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 18 May 2012 16:08:04 +0000 2012.05.18 12:08:05 LOG7[2236:4044]: -> EHLO localhost 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-pod51011.outlook.com Hello [65.23.214.191] 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-SIZE 36700160 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-PIPELINING 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-DSN 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-ENHANCEDSTATUSCODES 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-STARTTLS 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-AUTH 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-8BITMIME 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250-BINARYMIME 2012.05.18 12:08:05 LOG7[2236:4044]: <- 250 CHUNKING 2012.05.18 12:08:05 LOG7[2236:4044]: -> STARTTLS 2012.05.18 12:08:06 LOG7[2236:4044]: <- 220 2.0.0 SMTP server ready 2012.05.18 12:08:06 LOG6[2236:4044]: Client-mode smtp protocol negotiations succeeded 2012.05.18 12:08:06 LOG6[2236:4044]: SSL connected: new session negotiated 2012.05.18 12:08:06 LOG6[2236:4044]: Negotiated TLSv1/SSLv3 ciphersuite: AES128-SHA (128-bit encryption) 2012.05.18 12:08:06 LOG6[2236:4044]: Compression: null, expansion: null 2012.05.18 12:08:06 LOG7[2236:4044]: SSL socket closed on SSL_read 2012.05.18 12:08:06 LOG7[2236:4044]: Sent socket write shutdown 2012.05.18 12:08:06 LOG5[2236:4044]: Connection closed: 6 byte(s) sent to SSL, 48 byte(s) sent to socket 2012.05.18 12:08:06 LOG7[2236:4044]: Remote socket (FD=376) closed 2012.05.18 12:08:06 LOG7[2236:4044]: Local socket (FD=336) closed 2012.05.18 12:08:06 LOG7[2236:4044]: Service [SMTP Outgoing] finished (0 left) 2012.05.18 12:08:06 LOG7[2236:4044]: str_stats: 12 block(s), 298 data byte(s), 504 control byte(s)

2 1

Problem With GMail
by Van Brown 09 May '12

09 May '12

I am trying to use stunnel to act as a forwarder to GMail. My config file looks like:client = yes socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [gmail] accept = 25 connect = smtp.gmail.com:465 ;CAfile = peer-gmail.pem ;verify = 3 I saved the peer certificate and when I attempt to send mail, the log looks like this: 2012.05.08 16:01:35 LOG5[31036:19408]: Service [gmail] connected remote server from 192.168.1.9:42580 2012.05.08 16:01:35 LOG4[31036:19408]: CERT: Verification error: unable to get local issuer certificate 2012.05.08 16:01:35 LOG4[31036:19408]: Certificate check failed: depth=1, /C=US/O=Google Inc/CN=Google Internet Authority 2012.05.08 16:01:35 LOG3[31036:19408]: SSL_connect: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed 2012.05.08 16:01:35 LOG5[31036:19408]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.05.08 16:02:35 LOG5[31036:34312]: Service [gmail] accepted connection from 192.168.1.10:49303 2012.05.08 16:02:35 LOG5[31036:34312]: connect_blocking: connected 173.194.79.108:465 2012.05.08 16:02:35 LOG5[31036:34312]: Service [gmail] connected remote server from 192.168.1.9:42619 2012.05.08 16:02:36 LOG4[31036:34312]: CERT: Verification error: unable to get local issuer certificate 2012.05.08 16:02:36 LOG4[31036:34312]: Certificate check failed: depth=1, /C=US/O=Google Inc/CN=Google Internet Authority 2012.05.08 16:02:36 LOG3[31036:34312]: SSL_connect: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed 2012.05.08 16:02:36 LOG5[31036:34312]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket Please tell me what I'm doing wrong so I can fix it. Van Brown

2 1

Compiling stunnel without a cert
by Donovan Sydow 08 May '12

08 May '12

I'm trying to automate the compilation of stunnel from source and was curious if there was a hidden flag to prevent stunnel from trying to generate a certificate after running make install. I do know I can make a file called stunnel.pem in the system configuration directory prior to running make install to prevent the cert from being made, but ideally wanted a way to have stunnel install without having a cert pregenerated. I didn't see any configure flags to prevent this behavior. Does any one know how to bypass this requirement and compile without generating a certificate or having one already exist? Alternately I would be interested in hearing any suggestions on how to quietly generate the initial certificate as well in an automated (i.e. no input, quiet, etc.) fashion. Cheers, Donovan

1 0

Getting Stunnel to Work Under Windows 7 64-bit
by Thomas Eifert 03 May '12

03 May '12

For the benefit of the group, I thought I'd share some experiences I had when attempting to get Stunnel to run under Windows 7 SP1 64-bit. I initially installed Stunnel version 4.53 to the default location, which in Windows 7 64-bit is: C:\Program Files (x86)\stunnel\ I installed the service from the start menu option, then rebooted my machine. I have administrator rights, and User Account Control is disabled. My observations included the following: 1. The Stunnel status window displayed only configuration loads. No output from any active connection was ever displayed, despite the fact that Stunnel was passing traffic to/from SSL-enabled servers. 2. Stunnel would not write to the log file. The error message indicated that Stunnel was unable to open stunnel.log. Initially, I thought this might be a factor in the lack of status window connection output, so I commented the log statement out to eliminate it. I then reloaded the configuration. The issue of not seeing any connection info was unaffected. 3. The notification area icon would not appear on Stunnel service load. It would mysteriously appear, then disappear, at seemingly random times. 4. Once the service was installed, it was not possible to stop it or uninstall it from the provided start menu shortcuts. Whenever I attempted to do so, the Stunnel status window would appear. However, I was able to perform these actions successfully by opening a command prompt, then issuing the commands from there. In an effort to unravel these issues, I tried the following workarounds: 1. I re-installed stunnel to a non-system controlled directory. In my case, it was C:\Apps\stunnel\. 2. I attempted to run stunnel in compatibility mode, set for Windows XP SP3. 3. I tried installing 2 previous versions of Stunnel. All combinations produced exactly the same undesired result. Finally, I stopped and uninstalled the service. Instead of using that method, I created a shortcut to stunnel.exe, and placed it in the start menu's startup folder, then rebooted. Stunnel started at boot time, and all of the above issues were resolved. As such, it seems like Stunnel just doesn't like to be run as a service on a Windows 7 64-bit machine; at least not on the one I own. If you're encountering any stability issues with the Stunnel service in the Windows 7 64-bit environment, try my method. It works. I'd like to extend a special thank you to Carter Browne, who provided valuable input throughout the course of my testing. Regards, Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

2 2

ssl3 handshake error
by Colin Chalmers 28 Apr '12

28 Apr '12

Hi all, I'm pretty new to stunnel but did get this config to work on a linux box - now I am trying the same/similiar config on a win7 box but keep getting the handshake error below. I am using the latest version of stunnel and have tried searching for an answer via google, making the proposed changes as described No matter what settings I use it always seems to use the sslv3 handshake which then goes wrong :-( I'd appreciate any help on this Colin My config is as follows: ; ************************************************************************** ; * Global options * ; ************************************************************************** ; Debugging stuff (may useful for troubleshooting) ; Some debugging stuff useful for troubleshooting debug = 7 output = c:\temp\stunnel.log ; Use it for client mode client = yes rndbytes = 256 rndfile = c:\temp\randseed.bin ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Disable FIPS mode to allow non-approved protocols and algorithms fips = no ; ************************************************************************** ; * Service defaults may also be specified in individual service sections * ; ************************************************************************** ; Certificate/key is needed in server mode and optional in client mode cert = CT_20110324.pem ; Disable support for insecure SSLv2 protocol sslVersion = TLSv1 options = NO_SSLv2 options = NO_SSLv3 [CT] ; incoming connection from the client application accept = 444 ; outgoing connection connect = remote.server.com:443 TIMEOUTclose = 0 Error in log file 2012.04.11 18:33:54 LOG7[3684:3640]: Remote socket (FD=440) initialized 2012.04.11 18:33:54 LOG3[3684:3640]: SSL_connect: 14094410: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure 2012.04.11 18:33:54 LOG5[3684:3640]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.04.11 18:33:54 LOG7[3684:3640]: Remote socket (FD=440) closed 2012.04.11 18:33:54 LOG7[3684:3640]: Local socket (FD=408) closed 2012.04.11 18:33:54 LOG7[3684:3640]: Service [CT] finished (0 left)

3 2

Using Stunnel client but not Stunnel server with Apache mod_ssl
by Lilienberg, Daniel () 27 Apr '12

27 Apr '12

Hi, My supplier is using a somewhat strange setup looking like this: CLIENT: Stunnel running in client mode accepting incoming requests on port 8080. It will forward it to port to a server, port 443. SERVER: NOT running Stunnel at all, but running Apache with mod_ssl. It also acts as a proxy server, proxying all requests. Can this work, if so, how do I set it up ? [http://www.volvocars.net/support/IT/Services/IT_workplace/Email/outlook/sig…] Daniel Lilienberg Architect Connectivity Foundation Volvo Car Corporation Dept. 61630/PV2A Göteborg Sweden Telephone +46-31-3542317 dlilien2(a)volvocars.com<mailto:[email protected]> www.volvocars.com<http://www.volvocars.com/> Registered Office Göteborg, Sweden Registration No. 556074-3089

1 0

Windows 7 64-Bit
by Thomas Eifert 23 Apr '12

23 Apr '12

Has anyone attempted to install and run Stunnel on Windows 7 64-bit? If so, which version did you use, and were any issues experienced? Regards. Thomas -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

1 0

Possible error in stunnel 4.20
by Andreea Ion 20 Apr '12

20 Apr '12

Hi, I am running stunnel 4.2 on windows and I get the following log. I don't know if it's ok, if the problem is at the stunnel lovel or at the application level. SSL state (connect): before/connect initialization 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 write client hello A 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 read server hello A 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 read finished A 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 write change cipher spec A 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 write finished A 2012.04.20 11:46:09 LOG7[5684:4492]: SSL state (connect): SSLv3 flush data 2012.04.20 11:46:09 LOG7[5684:4492]: 2 items in the session cache 2012.04.20 11:46:09 LOG7[5684:4492]: 5 client connects (SSL_connect()) 2012.04.20 11:46:09 LOG7[5684:4492]: 5 client connects that finished 2012.04.20 11:46:09 LOG7[5684:4492]: 0 client renegotiations requested 2012.04.20 11:46:09 LOG7[5684:4492]: 0 server connects (SSL_accept()) 2012.04.20 11:46:09 LOG7[5684:4492]: 0 server connects that finished 2012.04.20 11:46:09 LOG7[5684:4492]: 0 server renegotiations requested 2012.04.20 11:46:09 LOG7[5684:4492]: 3 session cache hits 2012.04.20 11:46:09 LOG7[5684:4492]: 0 session cache misses 2012.04.20 11:46:09 LOG7[5684:4492]: 0 session cache timeouts 2012.04.20 11:46:09 LOG6[5684:4492]: SSL connected: previous session reused 2012.04.20 11:46:54 LOG3[5684:4492]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2012.04.20 11:46:54 LOG5[5684:4492]: Connection reset: 154 bytes sent to SSL, 0 bytes sent to socket 2012.04.20 11:46:54 LOG7[5684:4492]: Session finished (0 left) The last 3 lines are those that interests me most. Is this ok ? Regards, Andreea

1 0

(no subject)
by Guylhem 18 Apr '12

18 Apr '12

Hello With verify=3 and the certs loaded in the conf file with CAfile=startssl-chain.pem cert=mycert.pem, I get : CERT: Certificate not found in local repository Using the latest stunnel recompiled on a debian squeeze, the best I can get is: error queue: 140B0009: error:140B0009:SSL routines:SSL_CTX_use_PrivateKey_file:PEM lib SSL_CTX_use_PrivateKey_file: 906D06C: error:0906D06C:PEM routines:PEM_read_bio:no start line However, if I put these very same pem files in a directory as a CApath option instead (c_rehash applied) everything works fine. But The pem files are identical ! I've read http://stunnel.mirt.net/pipermail/stunnel-users/2010-November/002854.html but it seems a bit different The startssl-chain.pem was created with: wget http://www.startssl.com/certs/ca.pem wget http://www.startssl.com/certs/startssl.ca.pem cat sub.class1.server.ca.pem ca.pem > startssl-chain.pem I guess that may be the cause of the problem? What should I do to pass these pem files as stunnel.conf options instead of using the CApath? Guylhem

1 0

(no subject)
by Marco Tulio Jimenez Abrego 18 Apr '12

18 Apr '12

Buenos días El mensaje de error es: Error resolving 'smtp.gmail.com': Neither nodename nor servname known (EAI_NONAME). Gracias por su atención. -- Saludos. Att. Marco T. Jiménez ================ Tel. 6619-6782

3 2

Stunnel compiled with openssl 1.0.1 local binaries are 0.9.8k
by Michael Curran 11 Apr '12

11 Apr '12

Are there any potential known issues with stunnel being compiled using openssl 1.0.1 build and leaving the local system binaries at 0.9.8k Do you know of any way to test this for any incompatibilities? This was not my design, Im just being asked to support it and Im looking to make sure this method is not going to cause anything unusual.

2 1

PPID of child process
by Philip Wong 11 Apr '12

11 Apr '12

Hi, I’m trying to setup stunnel listening to multiple ports. The PPID of processes created are always root. Can we change that to the right PPID? Here I can see all the processes by killing 10764 and I expect this is the PPID. But all the children PPID are still 1; UID PID PPID C STIME TTY TIME CMD philwong 10759 1 0 16:27 pts/78 00:00:00 stunnel self.conf philwong 10760 1 0 16:27 pts/78 00:00:00 stunnel self.conf philwong 10761 1 0 16:27 pts/78 00:00:00 stunnel self.conf philwong 10762 1 0 16:27 pts/78 00:00:00 stunnel self.conf philwong 10763 1 0 16:27 pts/78 00:00:00 stunnel self.conf philwong 10764 1 0 16:27 ? 00:00:00 stunnel self.conf Regards, Philip

3 6

the connection had to be retried using SSL 3.0. This typically means that the server is using very old software and may have other security issues :(
by Thomas Manson 10 Apr '12

10 Apr '12

Hi, while I'm trying to get stunnel working for more than a few hours, I've also notice this warning in google chrome : the connection had to be retried using SSL 3.0. This typically means that > the server is using very old software and may have other security issues. [image: Inline image 1] gmail for example has AES_128_CBC for crypting, can we get that without much effort? What should be set to get rid of this warning ? I thought SSL v3 was the best (quickly pick acrross several example on the net) what is the best setting for this ? Thanks for your help, Thomas. My config : debug = 7 output = /var/log/stunnel4/extranet.service.com_stunnel.log setuid = stunnel4 setgid = stunnel4 pid = /var/run/stunnel4/extranet.service.com.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [extranet.service.com] key = /etc/stunnel/sites/extranet.service.com/extranet.service.com.key cert = /etc/stunnel/sites/extranet.service.com/extranet.service.com.crt accept = 8.90.17.4:443 connect = 127.0.0.1:82 sslVersion = SSLv3 TIMEOUTclose = 0

3 4

[Stunnel Guru needed] stunnel running, but no longer serve connection after a while ("Dispatching signals from the signal pipe" in logs ==> all stops)
by Thomas Manson 09 Apr '12

09 Apr '12

Hi All, I'm really struggling to make stunnel working for more than a few hours. (and the client is yelling hard...) (I solved some other issue : logging per website and making more than one stunnel works) To put it in a nutshell : - stunnel is running and working correctly (I can reach the website in https correctly) - after some hours I get the following situation : - stunnel is still running on linux - trying to connect to a website result in the connection taking very long time and then fails : "*The connection to * extranet.serviceplus-hse.com <http://extranet.website.com>* was interrupted. Error 101 (net::ERR_CONNECTION_RESET): The connection was reset.*" (Chrome) Same symptoms on IE9, Firefox & Lynx (on the server that runs stunnel) (see logs below) - The following logs are the last one seen in the log file : - 2012.04.03 23:33:28 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com connected remote server from 127.0.0.1:36256 - 2012.04.03 23:33:28 LOG7[24792:140152610346752]: Remote FD=1 initialized - 2012.04.03 23:33:28 LOG7[24792:140152610346752]: Option TCP_NODELAY set on remote socket - 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Socket closed on read - 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Sending SSL write shutdown - 2012.04.03 23:33:41 LOG7[24792:140152610346752]: SSL alert (write): warning: close notify - 2012.04.03 23:33:41 LOG6[24792:140152610346752]: SSL_shutdown successfully sent close_notify - 2012.04.03 23:33:41 LOG3[24792:140152610346752]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing - 2012.04.03 23:33:41 LOG5[24792:140152610346752]: Connection closed: 186584 bytes sent to SSL, 3275 bytes sent to socket - 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com finished (0 left) - 2012.04.04 06:25:04 LOG7[24792:140152610629408]: *Dispatching signals from the signal pipe * stopping the firewall & fail2ban do not change anything. (the last line is logged by this function : *static void signal_pipe_empty(void) ) * the base stunnel.log has the same ending : - 2012.04.03 21:10:42 LOG7[24778:139641780209408]: Service https-123monsite.com permitted by libwrap from 212.162.10.34:3244 - 2012.04.03 21:10:42 LOG5[24778:139641780209408]: Service https-123monsite.com accepted connection from 212.162.10.34:3244 - 2012.04.03 21:10:42 LOG7[24778:139641780209408]: SSL state (accept): before/accept initialization - 2012.04.03 21:10:42 LOG3[24778:139641780209408]: SSL_accept: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number - 2012.04.03 21:10:42 LOG5[24778:139641780209408]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket - 2012.04.03 21:10:42 LOG7[24778:139641780209408]: Service https-123monsite.com finished (0 left) - 2012.04.04 06:25:04 LOG7[24778:139641780213536]: Dispatching signals from the signal pipe - and at the same time (2012.04.04 06:25:04) all logs file stops : - root@ns0:/var/log/stunnel4# ll - total 128 - drwxr-xr-x 2 stunnel4 stunnel4 4096 2012-04-04 12:10 . - drwxr-xr-x 14 root root 4096 2012-04-04 06:25 .. - -rw-r----- 1 stunnel4 stunnel4 98084 2012-04-04 *06:25*extranet.serviceplus-hse.com_stunnel.log - -rw-r----- 1 stunnel4 stunnel4 4491 2012-04-04 06:25 mansonthomas.com_stunnel.log - -rw-r----- 1 stunnel4 stunnel4 0 2012-04-04 06:25 stunnel.log - -rw-r----- 1 stunnel4 stunnel4 11058 2012-04-04 06:25 stunnel.log.1 - I've seen some message about the same behavior but after an upgrade on freebsd and didn't find any solution... - Restarting stunnel restore the service immediately. below some information about my configuration... ask for more if needed. Thanks for any helps, Regards, Thomas. Distribution & Pachage info (x64 system) ###################################################################### root@ns0:/var/log/stunnel4# cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=11.10 DISTRIB_CODENAME=oneiric DISTRIB_DESCRIPTION="Ubuntu 11.10" root@ns0:/var/log/stunnel4# aptitude show stunnel4 Package: stunnel4 New: yes State: installed Automatically installed: no Version: 3:*4.35-2build1* ###################################################################### lynx try : ###################################################################### root@ns0:/var/log/stunnel4# lynx https://extranet.serviceplus-hse.com Looking up extranet.serviceplus-hse.com Making HTTPS connection to extranet.serviceplus-hse.com Retrying connection without TLS. Looking up extranet.serviceplus-hse.com Making HTTPS connection to extranet.serviceplus-hse.com Alert!: Unable to make secure connection to remote host. lynx: Can't access startfile https://extranet.serviceplus-hse.com/ ###################################################################### ps -edf : ###################################################################### 1 24773 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24774 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24775 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24776 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24777 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24778 24778 24778 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24787 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24788 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24789 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24790 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24791 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24792 24792 24792 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 P 1 24801 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24802 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24803 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24804 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24805 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ 1 24806 24806 24806 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf TERM=screen-bce PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LANG=en_US.UTF-8 PWD=/ ###################################################################### /etc/stunnel/base.conf ###################################################################### debug = 7 sslVersion = SSLv3 cert=/etc/stunnel/sites/123monsite.com/123monsite.com.crt key=/etc/stunnel/sites/123monsite.com/123monsite.com.key ; security enhancements for UNIX systems ; for chroot a copy of some devices and files is needed within the jail ;chroot = /var/lib/stunnel4/ setuid = stunnel4 setgid = stunnel4 ; PID is created inside the chroot jail pid = /var/run/stunnel4/stunnel4.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 output = /var/log/stunnel4/stunnel.log [https-123monsite.com] accept=88.190.17.222:443 connect=127.0.0.1:82 ###################################################################### /etc/stunnel/extranet.serviceplus-hse.com.conf ###################################################################### debug = 7 output = /var/log/stunnel4/extranet.serviceplus-hse.com_stunnel.log setuid = stunnel4 setgid = stunnel4 pid = /var/run/stunnel4/extranet.serviceplus-hse.com.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [extranet.serviceplus-hse.com] key = /etc/stunnel/sites/ extranet.serviceplus-hse.com/extranet.serviceplus-hse.com.key cert = /etc/stunnel/sites/ extranet.serviceplus-hse.com/extranet.serviceplus-hse.com.crt accept = 88.190.217.54:443 connect = 127.0.0.1:82 sslVersion = SSLv3 TIMEOUTclose = 0 ###################################################################### Last logs : /var/log/stunnel4/extranet.serviceplus-hse.com_stunnel.log ###################################################################### 2012.04.03 23:02:47 LOG6[24792:140152610346752]: SSL accepted: previous session reused 2012.04.03 23:02:47 LOG7[24792:140152610346752]: remote socket: FD=1 allocated (non-blocking mode) 2012.04.03 23:02:47 LOG6[24792:140152610346752]: connect_blocking: connecting 127.0.0.1:82 2012.04.03 23:02:47 LOG7[24792:140152610346752]: connect_blocking: s_poll_wait 127.0.0.1:82: waiting 10 seconds 2012.04.03 23:02:47 LOG5[24792:140152610346752]: connect_blocking: connected 127.0.0.1:82 2012.04.03 23:02:47 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com connected remote server from 127.0.0.1:60624 2012.04.03 23:02:47 LOG7[24792:140152610346752]: Remote FD=1 initialized 2012.04.03 23:02:47 LOG7[24792:140152610346752]: Option TCP_NODELAY set on remote socket 2012.04.03 23:02:58 LOG7[24792:140152610346752]: Socket closed on read 2012.04.03 23:02:58 LOG7[24792:140152610346752]: Sending SSL write shutdown 2012.04.03 23:02:58 LOG7[24792:140152610346752]: SSL alert (write): warning: close notify 2012.04.03 23:02:58 LOG6[24792:140152610346752]: SSL_shutdown successfully sent close_notify 2012.04.03 23:02:58 LOG3[24792:140152610346752]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing 2012.04.03 23:02:58 LOG5[24792:140152610346752]: Connection closed: 167313 bytes sent to SSL, 1871 bytes sent to socket 2012.04.03 23:02:58 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com finished (0 left) 2012.04.03 23:33:20 LOG7[24792:140152610629408]: local socket: FD=0 allocated (non-blocking mode) 2012.04.03 23:33:20 LOG7[24792:140152610629408]: Service extranet.serviceplus-hse.com accepted FD=0 from 82.224.128.241:52114 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com started 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Option TCP_NODELAY set on local socket 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Waiting for a libwrap process 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Acquired libwrap process #0 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Releasing libwrap process #0 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Released libwrap process #0 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com permitted by libwrap from 82.224.128.241:52114 2012.04.03 23:33:20 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com accepted connection from 82.224.128.241:52114 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): before/accept initialization 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 read client hello B 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write server hello A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write certificate A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write key exchange A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write server done A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 flush data 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 read client key exchange A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 read finished A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write change cipher spec A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write finished A 2012.04.03 23:33:20 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 flush data 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 7 items in the session cache 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 0 client connects (SSL_connect()) 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 0 client connects that finished 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 0 client renegotiations requested 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 21 server connects (SSL_accept()) 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 20 server connects that finished 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 0 server renegotiations requested 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 9 session cache hits 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 0 external session cache hits 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 7 session cache misses 2012.04.03 23:33:20 LOG7[24792:140152610346752]: 4 session cache timeouts 2012.04.03 23:33:20 LOG6[24792:140152610346752]: SSL accepted: new session negotiated 2012.04.03 23:33:20 LOG6[24792:140152610346752]: Negotiated ciphers: DHE-RSA-CAMELLIA256-SHA SSLv3 Kx=DH Au=RSA Enc=Camellia(256) Mac=SHA1 2012.04.03 23:33:20 LOG7[24792:140152610346752]: remote socket: FD=1 allocated (non-blocking mode) 2012.04.03 23:33:20 LOG6[24792:140152610346752]: connect_blocking: connecting 127.0.0.1:82 2012.04.03 23:33:20 LOG7[24792:140152610346752]: connect_blocking: s_poll_wait 127.0.0.1:82: waiting 10 seconds 2012.04.03 23:33:20 LOG5[24792:140152610346752]: connect_blocking: connected 127.0.0.1:82 2012.04.03 23:33:20 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com connected remote server from 127.0.0.1:36240 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Remote FD=1 initialized 2012.04.03 23:33:20 LOG7[24792:140152610346752]: Option TCP_NODELAY set on remote socket 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Socket closed on read 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Sending SSL write shutdown 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL alert (write): warning: close notify 2012.04.03 23:33:27 LOG6[24792:140152610346752]: SSL_shutdown successfully sent close_notify 2012.04.03 23:33:27 LOG3[24792:140152610346752]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing 2012.04.03 23:33:27 LOG5[24792:140152610346752]: Connection closed: 537 bytes sent to SSL, 620 bytes sent to socket 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com finished (0 left) 2012.04.03 23:33:27 LOG7[24792:140152610629408]: local socket: FD=0 allocated (non-blocking mode) 2012.04.03 23:33:27 LOG7[24792:140152610629408]: Service extranet.serviceplus-hse.com accepted FD=0 from 82.224.128.241:52123 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com started 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Option TCP_NODELAY set on local socket 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Waiting for a libwrap process 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Acquired libwrap process #0 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Releasing libwrap process #0 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Released libwrap process #0 2012.04.03 23:33:27 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com permitted by libwrap from 82.224.128.241:52123 2012.04.03 23:33:27 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com accepted connection from 82.224.128.241:52123 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): before/accept initialization 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 read client hello B 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write server hello A 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write change cipher spec A 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 write finished A 2012.04.03 23:33:27 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 flush data 2012.04.03 23:33:28 LOG7[24792:140152610346752]: SSL state (accept): SSLv3 read finished A 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 7 items in the session cache 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 0 client connects (SSL_connect()) 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 0 client connects that finished 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 0 client renegotiations requested 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 22 server connects (SSL_accept()) 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 21 server connects that finished 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 0 server renegotiations requested 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 10 session cache hits 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 0 external session cache hits 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 7 session cache misses 2012.04.03 23:33:28 LOG7[24792:140152610346752]: 4 session cache timeouts 2012.04.03 23:33:28 LOG6[24792:140152610346752]: SSL accepted: previous session reused 2012.04.03 23:33:28 LOG7[24792:140152610346752]: remote socket: FD=1 allocated (non-blocking mode) 2012.04.03 23:33:28 LOG6[24792:140152610346752]: connect_blocking: connecting 127.0.0.1:82 2012.04.03 23:33:28 LOG7[24792:140152610346752]: connect_blocking: s_poll_wait 127.0.0.1:82: waiting 10 seconds 2012.04.03 23:33:28 LOG5[24792:140152610346752]: connect_blocking: connected 127.0.0.1:82 2012.04.03 23:33:28 LOG5[24792:140152610346752]: Service extranet.serviceplus-hse.com connected remote server from 127.0.0.1:36256 2012.04.03 23:33:28 LOG7[24792:140152610346752]: Remote FD=1 initialized 2012.04.03 23:33:28 LOG7[24792:140152610346752]: Option TCP_NODELAY set on remote socket 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Socket closed on read 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Sending SSL write shutdown 2012.04.03 23:33:41 LOG7[24792:140152610346752]: SSL alert (write): warning: close notify 2012.04.03 23:33:41 LOG6[24792:140152610346752]: SSL_shutdown successfully sent close_notify 2012.04.03 23:33:41 LOG3[24792:140152610346752]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing 2012.04.03 23:33:41 LOG5[24792:140152610346752]: Connection closed: 186584 bytes sent to SSL, 3275 bytes sent to socket 2012.04.03 23:33:41 LOG7[24792:140152610346752]: Service extranet.serviceplus-hse.com finished (0 left) 2012.04.04 06:25:04 LOG7[24792:140152610629408]: Dispatching signals from the signal pipe ######################################################################

2 6

Ubuntu version of stunnel : multiple process shown by a ps -edf, compiled from sources : one process
by Thomas Manson 08 Apr '12

08 Apr '12

Hi, To get around a bug of stunnel present in the package of Ubuntu 11.10 (that has been corrected in v4.38), I've compiled from sources (v4.53). It went well, but I did notice a change in the processes : from compiled sources, I can see only on process per conf file ###################################################################### 1 21402 21402 21402 ? -1 Ss 109 0:00 /usr/local/bin/stunnel4 /etc/stunnel/base.conf 1 21411 21411 21411 ? -1 Ss 109 0:00 /usr/local/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 21420 21420 21420 ? -1 Ss 109 0:00 /usr/local/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf ###################################################################### while on the ubuntu version, I've multiple process per conf file. ps -edf from ubuntu distrib ###################################################################### 1 24773 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24774 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24775 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24776 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24777 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24778 24778 24778 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/base.conf 1 24787 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24788 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24789 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24790 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24791 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24792 24792 24792 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/extranet.serviceplus-hse.com.conf 1 24801 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf 1 24802 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf 1 24803 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf 1 24804 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf 1 24805 24762 18168 ? -1 S 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf 1 24806 24806 24806 ? -1 Ss 109 0:00 /usr/bin/stunnel4 /etc/stunnel/mansonthomas.com.conf ###################################################################### I'm using the exact same version of conf file for both setup... any idea why this change ? is one better than another ? Regards, Thomas.

1 0

Transparent STunnel & HAProxy on Centos6.2
by Scott McKeown 07 Apr '12

07 Apr '12

Hi All, I've been playing with this for a little while now and before the all in front of me and my head meet I was wondering if someone else could shed some light on this for me please. First off let me give you a over view of the network setup: My Virtual Machine has two interfaces eth0 has two addresses 192.168.82.9/18and 192.168.82.10/18. 192.168.82.9 is going to be for the management of the server and 192.168.82.10 is what the website will respond too. eth1 has a network of its own 10.0.0.0/24 and I have two Debian Apache web servers that are connected to this network 10.0.0.10 and 10.0.0.20. If this was a real world setup I might have put the management address (192.168.82.9) on a different port but I didn't think of that at the time of setting this up but I may do that later. Second what have I done! Well this is a brand new install of Centos6.2 minimal fully patched and both HAProxy and STunnel downloaded and installed. I'm using the devel version of HAProxy but thats a different story and version 4.53 of STunnel. Now the problem. Both seem to work perfectly as-long as I don't want to know who is accessing my site which make it next to useless. However, I can get HAProxy to report the IP Address of the visitor as long as you visit the HTTP page on port 80 as per my configuration file. I can also get STunnel to work with HAProxy but as soon as I enable 'protocol = proxy' the HTTPS side breaks and all I get in my browser is '400 Bad Request Your browser sent an invalid request'. I've played with everything I can thing of and I still cant get a Transparent STunnel>HAProxy solution working correctly. Config Files: stunnel.conf ====================================== chroot = /usr/local/var/lib/stunnel/ #setuid = nobody setgid = nobody pid = /stunnel.pid cert = /usr/local/etc/stunnel/stunnel.pem key = /usr/local/etc/stunnel/stunnel.pem options = NO_SSLv2 debug = 7 #fips = no [https] accept = 192.168.82.10:443 connect = 192.168.82.10:80 protocol = proxy haproxy.cfg ====================================== global daemon log /dev/log local4 maxconn 40000 ulimit-n 81000 defaults log global mode http contimeout 4000 clitimeout 42000 srvtimeout 43000 listen http1 bind 192.168.82.10:80 mode http option http-server-close option forwardfor source 0.0.0.0 usesrc clientip balance roundrobin server http1_1 10.0.0.10:80 cookie http1_1 check inter 2000 rise 2 fall 3 server http1_1 10.0.0.20:80 cookie http1_1 check inter 2000 rise 2 fall 3 Log file ====================================== Apr 5 12:37:32 lbmaster haproxy[1351]: Proxy http1 started. Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: stunnel 4.53 on x86_64-unknown-linux-gnu platform Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: Compiled/running with OpenSSL 1.0.0-fips 29 Mar 2010 Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: Threading:PTHREAD SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:POLL+IPv6 Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: Reading configuration from file /usr/local/etc/stunnel/stunnel.conf Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: FIPS mode is enabled Apr 5 12:37:33 lbmaster stunnel: LOG6[1353:140163149080512]: Initializing service section [https] Apr 5 12:37:33 lbmaster stunnel: LOG5[1353:140163149080512]: Configuration successful Apr 5 12:37:41 lbmaster stunnel: LOG5[1354:140163149076224]: Service [https] accepted connection from 192.168.64.10:53149 Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: connect_blocking: connecting 192.168.82.10:80 Apr 5 12:37:41 lbmaster haproxy[1352]: Connect from 192.168.82.10:47570 to 192.168.82.10:80 (http1/HTTP) Apr 5 12:37:41 lbmaster stunnel: LOG5[1354:140163149076224]: connect_blocking: connected 192.168.82.10:80 Apr 5 12:37:41 lbmaster stunnel: LOG5[1354:140163149076224]: Service [https] connected remote server from 192.168.82.10:47570 Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: Server-mode proxy protocol negotiations started Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: Server-mode proxy protocol negotiations succeeded Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: SSL accepted: new session negotiated Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: Negotiated TLSv1/SSLv3 ciphersuite: DHE-RSA-AES256-SHA (256-bit encryption) Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: Compression: null, expansion: null Apr 5 12:37:41 lbmaster stunnel: LOG6[1354:140163149076224]: SSL_shutdown successfully sent close_notify alert Apr 5 12:37:41 lbmaster stunnel: LOG5[1354:140163149076224]: Error detected on socket (read) file descriptor: Broken pipe (32) Apr 5 12:37:41 lbmaster stunnel: LOG5[1354:140163149076224]: Connection reset: 187 byte(s) sent to SSL, 1 byte(s) sent to socket Any help would be most gracefully received and welcome. ~Yours, Scott

2 1

help
by Bill Tindal 07 Apr '12

07 Apr '12

On Sat, Apr 7, 2012 at 8:00 PM, <stunnel-users-request(a)stunnel.org> wrote: > Send stunnel-users mailing list submissions to > stunnel-users(a)stunnel.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > or, via email, send a message with subject or body 'help' to > stunnel-users-request(a)stunnel.org > > You can reach the person managing the list at > stunnel-users-owner(a)stunnel.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of stunnel-users digest..." > > > Today's Topics: > > 1. Re: [Stunnel Guru needed] stunnel running, but no longer > serve connection after a while ("Dispatching signals from the > signal pipe" in logs ==> all stops) (Thomas Manson) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 7 Apr 2012 08:24:46 +0200 > From: Thomas Manson <dev.mansonthomas(a)gmail.com> > To: Scott Gifford <sgifford(a)suspectclass.com> > Cc: stunnel-users(a)stunnel.org > Subject: Re: [stunnel-users] [Stunnel Guru needed] stunnel running, > but no longer serve connection after a while ("Dispatching signals > from the signal pipe" in logs ==> all stops) > Message-ID: > <CA+PenvGYr+tTiKsavOgyaLOtoRxUo0nfxuRVDEzdvGDrFpefLg(a)mail.gmail.com > > > Content-Type: text/plain; charset="utf-8" > > This bug has been corrected in > > Version 4.38, 2011.06.28, urgency: MEDIUM: > > - New features > - Server-side SNI implemented (RFC 3546 section 3.1) with a new > service-level option "nsi". > - "socket" option also accepts "yes" and "no" for flags. > - Nagle's algorithm is now disabled by default for improved > interactivity. > - Bugfixes > - A compilation fix was added for OpenSSL version < 1.0.0. > - Signal pipe set to non-blocking mode. This bug caused hangs of > stunnel features based on signals, e.g. local mode, FORK threading, or > configuration file reload on Unix. Win32 platform was not affected. > > > however it don't precise from which version it affects stunnel... so my try > with 11.04 is a bit risky, even if 4.29 is quite far from 4.38. > > Maybe upgrading to 12.04 could solve the issue, but I don't like to upgrade > right away (I had some bad surpise ;)) > > so compiling from source seems to be the safest option. > > Thomas. > > On Sat, Apr 7, 2012 at 07:58, Thomas Manson <dev.mansonthomas(a)gmail.com > >wrote: > > > i've just checked my setup right now and the funny thing is that I think > > it stopped working exactly at the same second of the same hour & minute > of > > the day : > > > > > > root@ns0:/var/log/stunnel4# ll > > total 940 > > drwxr-xr-x 2 stunnel4 stunnel4 4096 2012-04-07 06:25 . > > drwxr-xr-x 14 root root 4096 2012-04-07 06:25 .. > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 > > extranet.serviceplus-hse.com_stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 926267 2012-04-07 06:25 > > extranet.serviceplus-hse.com_stunnel.log.1 > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 > > mansonthomas.com_stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 5804 2012-04-07 06:25 > > mansonthomas.com_stunnel.log.1 > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 11710 2012-04-07 06:25 stunnel.log.1 > > root@ns0:/var/log/stunnel4# ll > > total 940 > > drwxr-xr-x 2 stunnel4 stunnel4 4096 2012-04-07 06:25 . > > drwxr-xr-x 14 root root 4096 2012-04-07 06:25 .. > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 > > extranet.serviceplus-hse.com_stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 926267 2012-04-07 06:25 > > extranet.serviceplus-hse.com_stunnel.log.1 > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 > > mansonthomas.com_stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 5804 2012-04-07 06:25 > > mansonthomas.com_stunnel.log.1 > > -rw-r----- 1 stunnel4 stunnel4 0 2012-04-07 06:25 stunnel.log > > -rw-r----- 1 stunnel4 stunnel4 11710 2012-04-07 06:25 stunnel.log.1 > > root@ns0:/var/log/stunnel4# tail stunnel.log.1 > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: Option TCP_NODELAY set > on > > remote socket > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: Socket closed on read > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: Sending SSL write > shutdown > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: SSL alert (write): > > warning: close notify > > 2012.04.06 22:21:19 LOG6[4745:139677248579328]: SSL_shutdown > successfully > > sent close_notify > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: SSL socket closed on > > SSL_read > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: Sending socket write > > shutdown > > 2012.04.06 22:21:19 LOG5[4745:139677248579328]: Connection closed: 206 > > bytes sent to SSL, 139 bytes sent to socket > > 2012.04.06 22:21:19 LOG7[4745:139677248579328]: Service > > https-123monsite.com finished (0 left) > > 2012.04.07 06:25:04 LOG7[4745:139677248583456]: Dispatching signals from > > the signal pipe > > root@ns0:/var/log/stunnel4# > > > > compared to my first post... : > > > > > > > > > > - 2012.04.04 06:25:04 LOG7[24778:139641780213536]: Dispatching > signals > > from the signal pipe > > - > > and at the same time (2012.04.04 06:25:04) all logs file stops : > > > > > > - root@ns0:/var/log/stunnel4# ll > > - total 128 > > - drwxr-xr-x 2 stunnel4 stunnel4 4096 2012-04-04 12:10 . > > - drwxr-xr-x 14 root root 4096 2012-04-04 06:25 .. > > - -rw-r----- 1 stunnel4 stunnel4 98084 2012-04-04 *06:25* > > extranet.serviceplus-hse.com_stunnel.log > > - -rw-r----- 1 stunnel4 stunnel4 4491 2012-04-04 06:25 > > mansonthomas.com_stunnel.log > > - -rw-r----- 1 stunnel4 stunnel4 0 2012-04-04 06:25 stunnel.log > > - -rw-r----- 1 stunnel4 stunnel4 11058 2012-04-04 06:25 stunnel.log.1 > > > > > > > > I could cron a restart at the appropriate time but I think I'll compile > > from sources. > > > > Regards, > > Thomas. > > > > On Sat, Apr 7, 2012 at 07:51, Thomas Manson <dev.mansonthomas(a)gmail.com > >wrote: > > > >> Yes, it helps a lot ! > >> > >> I've another server running a different version of Ubuntu (11.04 where > >> stunnel version is 4.29-1 instead of 11.10 and stunnel 4.35-2build1) > >> > >> Do you think it can work on older version ? > >> > >> I was thinking to try this because I've seen some message about the same > >> symptoms after upgrade so... > >> > >> but maybe the two version are too close and I will need to compile from > >> sources... > >> > >> what do you think about this? > >> > >> Regards, > >> Thomas. > >> > >> > >> On Sat, Apr 7, 2012 at 06:56, Scott Gifford <sgifford(a)suspectclass.com > >wrote: > >> > >>> On Wed, Apr 4, 2012 at 6:16 AM, Thomas Manson < > >>> dev.mansonthomas(a)gmail.com> wrote: > >>> > >>>> Hi All, > >>>> > >>>> I'm really struggling to make stunnel working for more than a few > >>>> hours. (and the client is yelling hard...) (I solved some other issue > : > >>>> logging per website and making more than one stunnel works) > >>>> > >>> > >>> Hi Thomas, > >>> > >>> I was just troubleshooting what looks like a very similar issue. I > >>> believe this is fixed in a later version of stunnel, which you can get > from > >>> stunnel.org and compile yourself from source. > >>> > >>> This is the ChangeLog entry that I think addresses your problem: > >>> > >>> - Signal pipe set to non-blocking mode. This bug caused hangs of > >>> stunnel > >>> features based on signals, e.g. local mode, FORK threading, or > >>> configuration file reload on Unix. Win32 platform was not > affected. > >>> > >>> > >>> I have just updated from the official Oneiric version to this one, so I > >>> don't yet know if it will fix the problem long-term, but I think my > odds > >>> are not too bad. > >>> > >>> Hope this helps, > >>> > >>> -----Scott. > >>> > >>> > >> > > >

1 0

Looking for help - Stunnel works with Gmail but not with my provider
by Scott McKeown 05 Apr '12

05 Apr '12

Hi Pieter, What does stunnel -version show under the 'ciphers' section? Also have you tried this with the 'options = NO_SSLv3' commented out? ~Scott

2 2

Config for https server
by Ali Kabiri 05 Apr '12

05 Apr '12

I asked before but nobody answer Please I read manual but it's not clear for may task I have IP & Port with user and pass from HttpS server I want connect to server an use for tunneling like proxy server Please help me How config and connect to server?

2 1

MySQL through stunnel - fails after many days
by Whit Blauvelt 04 Apr '12

04 Apr '12

Hi, I have a Nagios plugin using an stunnel connection to a MySQL server across the LAN for frequent queries, where each one opens a fresh connection. Checking ulimit on both ends shows "unlimited" (I've found old discussions about that being a possible factor). There's nothing I've found in the logs to show where it's going wrong. It's just that after days of running fine, suddenly the queries start failing to connect through. Restarting stunnel on both ends immediately resolves the problem. I suppose I can just restart stunnel on both ends once a day from cron and be okay. But I'd rather find a real fix, if anyone recognizes what this would be and can point me to one. Thanks, Whit

2 2

Configure Stunnel 4.53 to Run on a Windows 2000 Machine?
by Jeff Salisbury 03 Apr '12

03 Apr '12

Greetings, we recently updated Stunnel to version 4.53 and we've discovered that Stunnel no longer runs on our Windows 2000 workstation. Here is the message in the Stunnel log: No limit detected for the number of clients stunnel 4.53 on x86-pc-mingw32-gnu platform Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv4 Reading configuration from file C:\bin\Stunnel\stunnel.conf FIPS_mode_set: 2D06C071: error:2D06C071:FIPS routines:FIPS_mode_set:unsupported platform Server is down Please help! Is there a configuration change or addition we can make in our Stunnel.conf file that will allow us to run v4.53 on our Windows 2000 machine? Regards, Jeff

2 1

set proxy for stunnel client
by Ebrahim Khalilzadeh 02 Apr '12

02 Apr '12

Dear Users, Hi In our network users connect to internet using http proxy. I have a configuration file like this: [proxy] accept:4444 connect:remote_ip:remote_port connecting to remote ip needs http proxy. I tested some configurations like this: [proxy] protocol = connect protocolHost = proxy_ip:proxy_port accept:4444 connect:remote_ip:remote_port or [proxy] protocol = proxy protocolHost = proxy_ip:proxy_port accept:4444 connect:remote_ip:remote_port But now no success!!! How can i set stunnel to use proxy? Regards, Ebrahim khalilzadeh --

1 0

Stunnel running for a few minutes and then stop and can't handle multiple domains
by Thomas Manson 01 Apr '12

01 Apr '12

Hi, I've setup a stunnel install to handle several website SSL part of the HTTP (then redirected to HAProxy LoadBalancer). I can successfully start one site, but if I add another website (so another stunnel conf file in /etc/stunnel) then the first is said to be already running while it's not and the second starts for real. thomas@ns0:/var/log/stunnel4$ sudo service stunnel4 start Starting SSL tunnels: [Started: /etc/stunnel/base.conf] [Started: /etc/stunnel/extranet.onesite.com.conf] *[Already running: /etc/stunnel/mansonthomas.com.conf] stunnel.* (mansonthomas.com was my first try before implementing a client website) Also, in /var/log/stunnel.log I've only the logs for base.conf, not for the two other one. What should I do to have the logs? I've tryed to add debug=7 at the beginning of the two conf file, but nothing. After some times, the extranet site https stops working... I was off in holidays for the last two weeks, so I didn't have the time to really dig into this... what would be the first steps to debug this issues ? Regards, Thomas. 2012.03.29 15:31:41 LOG5[8181:140471188047648]: Reading configuration from file /etc/stunnel/base.conf 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Snagged 64 random bytes from /dev/urandom 2012.03.29 15:31:41 LOG7[8181:140471188047648]: PRNG seeded successfully 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Using DH parameters from /etc/stunnel/sites/mainsite.com/mainsite.com.crt 2012.03.29 15:31:41 LOG6[8181:140471188047648]: DH initialized with 2048 bit key 2012.03.29 15:31:41 LOG7[8181:140471188047648]: ECDH initialized 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Certificate: /etc/stunnel/sites/mainsite.com/mainsite.com.crt 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Certificate loaded 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Key file: /etc/stunnel/sites/mainsite.com/mainsite.com.key 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Private key loaded 2012.03.29 15:31:41 LOG7[8181:140471188047648]: SSL context initialized for service https-mainsite.com 2012.03.29 15:31:41 LOG5[8181:140471188047648]: Configuration successful 2012.03.29 15:31:41 LOG5[8181:140471188047648]: No limit detected for the number of clients 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=3 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=4 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=4 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=5 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=5 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=6 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=6 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=7 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=7 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: libwrap_init: FD=8 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: signal_pipe: FD=9 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: signal_pipe: FD=10 allocated (blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: accept socket: FD=11 allocated (non-blocking mode) 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Option SO_REUSEADDR set on accept socket 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Service https-mainsite.combound to 8.19.1.2:443 2012.03.29 15:31:41 LOG7[8181:140471188047648]: Service https-mainsite.comopened FD=11 2012.03.29 15:31:41 LOG7[8187:140471188047648]: Created pid file /var/run/stunnel4/stunnel4.pid 2012.03.29 15:31:41 LOG5[8187:140471188047648]: stunnel 4.35 on x86_64-pc-linux-gnu with OpenSSL 1.0.0e 6 Sep 2011 2012.03.29 15:31:41 LOG5[8187:140471188047648]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2012.03.29 15:31:49 LOG7[8187:140471188047648]: Dispatching signals from the signal pipe 2012.03.29 15:31:49 LOG5[8187:140471188047648]: Received signal 15; terminating 2012.03.29 15:31:49 LOG7[8187:140471188047648]: removing pid file /var/run/stunnel4/stunnel4.pid 2012.03.29 15:32:38 LOG5[8280:140481745549088]: Reading configuration from file /etc/stunnel/base.conf 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Snagged 64 random bytes from /dev/urandom 2012.03.29 15:32:38 LOG7[8280:140481745549088]: PRNG seeded successfully 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Using DH parameters from /etc/stunnel/sites/mainsite.com/mainsite.com.crt 2012.03.29 15:32:38 LOG6[8280:140481745549088]: DH initialized with 2048 bit key 2012.03.29 15:32:38 LOG7[8280:140481745549088]: ECDH initialized 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Certificate: /etc/stunnel/sites/mainsite.com/mainsite.com.crt 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Certificate loaded 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Key file: /etc/stunnel/sites/mainsite.com/mainsite.com.key 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Private key loaded 2012.03.29 15:32:38 LOG7[8280:140481745549088]: SSL context initialized for service https-mainsite.com 2012.03.29 15:32:38 LOG5[8280:140481745549088]: Configuration successful 2012.03.29 15:32:38 LOG5[8280:140481745549088]: No limit detected for the number of clients 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=3 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=4 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=4 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=5 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=5 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=6 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=6 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=7 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=7 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: libwrap_init: FD=8 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: signal_pipe: FD=9 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: signal_pipe: FD=10 allocated (blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: accept socket: FD=11 allocated (non-blocking mode) 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Option SO_REUSEADDR set on accept socket 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Service https-mainsite.combound to 8.19.1.2:443 2012.03.29 15:32:38 LOG7[8280:140481745549088]: Service https-mainsite.comopened FD=11 2012.03.29 15:32:38 LOG7[8286:140481745549088]: Created pid file /var/run/stunnel4/stunnel4.pid 2012.03.29 15:32:38 LOG5[8286:140481745549088]: stunnel 4.35 on x86_64-pc-linux-gnu with OpenSSL 1.0.0e 6 Sep 2011 2012.03.29 15:32:38 LOG5[8286:140481745549088]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP

1 2

Looking for help - Stunnel works with Gmail but not with my provider
by Verberne, Pieter 31 Mar '12

31 Mar '12

Hello, I have successfully used stunnel with blat to send e-mails from my gmail accounts. Getting this to work with my new internet provider "Ziggo" in The Netherlands seems impossible, despite days spent on the internet searching for help and trying numerous configurations. Whatever I do, there is always this message: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number Any help would be highly appreciated. Pieter Verberne PC: i7 OS: Windows 7 - 64bits Stunnel version: 4.53 When sending an e-mail from my PC with Thunderbird 2.0 I can successfully use TLS but not SSL. My provider says about secure smtp connections on their website: Outgoing mail server smtp.ziggo.nl (port number 587) Use of SSL (Secure Socket Layer) / TLS yes For this server is verification required / identity check yes User name your e-mail address Password your e-mail password Stunnel.conf: # GLOBAL OPTIONS debug = 7 output = D:\Pieter\Temp\stunnel-log.txt fips = no cert = stunnel.pem # SERVICE-LEVEL OPTIONS [SMTP Ziggo] client = yes options = NO_SSLv2 options = NO_SSLv3 sslVersion = TLSv1 accept = 587 connect = smtp.ziggo.nl:587 stunnel-log.txt: 2012.03.31 12:04:33 LOG7[2460:2516]: No limit detected for the number of clients 2012.03.31 12:04:33 LOG5[2460:2516]: stunnel 4.53 on x86-pc-mingw32-gnu platform 2012.03.31 12:04:33 LOG5[2460:2516]: Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 2012.03.31 12:04:33 LOG5[2460:2516]: Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 2012.03.31 12:04:33 LOG5[2460:2516]: Reading configuration from file stunnel.conf 2012.03.31 12:04:33 LOG5[2460:2516]: FIPS mode is disabled 2012.03.31 12:04:33 LOG7[2460:2516]: Compression not enabled 2012.03.31 12:04:34 LOG7[2460:2516]: Snagged 64 random bytes from C:/.rnd 2012.03.31 12:04:34 LOG7[2460:2516]: Wrote 1024 new random bytes to C:/.rnd 2012.03.31 12:04:34 LOG7[2460:2516]: PRNG seeded successfully 2012.03.31 12:04:34 LOG6[2460:2516]: Initializing service section [SMTP Ziggo] 2012.03.31 12:04:34 LOG7[2460:2516]: Certificate: stunnel.pem 2012.03.31 12:04:34 LOG7[2460:2516]: Certificate loaded 2012.03.31 12:04:34 LOG7[2460:2516]: Key file: stunnel.pem 2012.03.31 12:04:34 LOG7[2460:2516]: Private key loaded 2012.03.31 12:04:34 LOG7[2460:2516]: SSL options set: 0x03000004 2012.03.31 12:04:34 LOG5[2460:2516]: Configuration successful 2012.03.31 12:04:34 LOG7[2460:2516]: Service [SMTP Ziggo] (FD=308) bound to 0.0.0.0:587 2012.03.31 12:06:01 LOG7[2460:2516]: Service [SMTP Ziggo] accepted (FD=436) from 192.168.3.11:49195 2012.03.31 12:06:01 LOG7[2460:2516]: Creating a new thread 2012.03.31 12:06:01 LOG7[2460:2516]: New thread created 2012.03.31 12:06:01 LOG7[2460:3652]: Service [SMTP Ziggo] started 2012.03.31 12:06:01 LOG5[2460:3652]: Service [SMTP Ziggo] accepted connection from 192.168.3.11:49195 2012.03.31 12:06:01 LOG6[2460:3652]: connect_blocking: connecting 212.xx.xx.x:587 2012.03.31 12:06:01 LOG7[2460:3652]: connect_blocking: s_poll_wait 212.xx.xx.x:587: waiting 10 seconds 2012.03.31 12:06:01 LOG5[2460:3652]: connect_blocking: connected 212.xx.xx.x:587 2012.03.31 12:06:01 LOG5[2460:3652]: Service [SMTP Ziggo] connected remote server from 192.168.3.11:49196 2012.03.31 12:06:01 LOG7[2460:3652]: Remote socket (FD=460) initialized 2012.03.31 12:06:01 LOG3[2460:3652]: *SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number* 2012.03.31 12:06:01 LOG5[2460:3652]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2012.03.31 12:06:01 LOG7[2460:3652]: Remote socket (FD=460) closed 2012.03.31 12:06:01 LOG7[2460:3652]: Local socket (FD=436) closed 2012.03.31 12:06:01 LOG7[2460:3652]: Service [SMTP Ziggo] finished (0 left) 2012.03.31 12:18:01 LOG7[2460:2516]: Dispatching signals from the signal pipe 2012.03.31 12:18:04 LOG7[2460:2516]: Processing SIGNAL_TERMINATE

1 0

Re: [stunnel-users] stunnel 4.53 make error
by Scott McKeown 30 Mar '12

30 Mar '12

Hi Jose, That did it, thanks. Stupid thing is I check that I had OpenSSL but not the devel package. Mark one up for my stupidity (again). ~Yours, Scott On 30 March 2012 16:11, <josealf(a)rocketmail.com> wrote: > Scott, > > Most likely you don't have openssl-devel package installed. > > Regards > Jose > > -----Original Message----- > From: Scott McKeown <scott(a)loadbalancer.org> > Sender: stunnel-users-bounces(a)stunnel.org > Date: Fri, 30 Mar 2012 16:00:45 > To: <stunnel-users(a)stunnel.org> > Subject: [stunnel-users] stunnel 4.53 make error > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > > > >

1 0

stunnel 4.53 make error
by Scott McKeown 30 Mar '12

30 Mar '12

Hi Guys, Just tried to install stunnel-4.53 onto a virgin Cento6.2 x64 system with HAProxy (box is fully patched too), However, every time I runt the 'make' command I get the following output. I've had a bit of a hunt around but this is a little outside of both my comfort zone and my knowledge levels so any help would be great. [root@localhost ~]# cd /root/stunnel-4.53 [root@localhost stunnel-4.53]# make Making all in src make[1]: Entering directory `/root/stunnel-4.53/src' make all-am make[2]: Entering directory `/root/stunnel-4.53/src' gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -g -O2 -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-str.o -MD -MP -MF .deps/stunnel-str.Tpo -c -o stunnel-str.o `test -f 'str.c' || echo './'`str.c In file included from str.c:38: common.h:392:33: error: openssl/opensslconf.h: No such file or directory common.h:405:27: error: openssl/lhash.h: No such file or directory common.h:406:25: error: openssl/ssl.h: No such file or directory common.h:407:25: error: openssl/err.h: No such file or directory common.h:408:66: error: openssl/crypto.h: No such file or directory common.h:409:26: error: openssl/rand.h: No such file or directory common.h:411:25: error: openssl/md4.h: No such file or directory common.h:413:25: error: openssl/des.h: No such file or directory In file included from str.c:38: common.h:449: warning: return type defaults to ‘int’ common.h: In function ‘STACK_OF’: common.h:449: error: expected declaration specifiers before ‘*’ token In file included from str.c:39: prototypes.h:50: error: storage class specified for parameter ‘LOG_MODE’ prototypes.h:61: error: storage class specified for parameter ‘SOCKADDR_UNION’ prototypes.h:64: error: expected specifier-qualifier-list before ‘SOCKADDR_UNION’ prototypes.h:67: warning: struct has no members prototypes.h:67: error: storage class specified for parameter ‘SOCKADDR_LIST’ prototypes.h:72: error: storage class specified for parameter ‘COMP_TYPE’ prototypes.h:78: error: expected specifier-qualifier-list before ‘COMP_TYPE’ prototypes.h:114: warning: struct has no members prototypes.h:114: error: storage class specified for parameter ‘GLOBAL_OPTIONS’ prototypes.h:116: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘global_options’ prototypes.h:124: error: expected specifier-qualifier-list before ‘SSL_CTX’ prototypes.h:222: error: storage class specified for parameter ‘SERVICE_OPTIONS’ prototypes.h:224: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘service_options’ prototypes.h:236: error: storage class specified for parameter ‘VAL_TYPE’ prototypes.h:244: error: storage class specified for parameter ‘OPT_UNION’ prototypes.h:250: error: expected specifier-qualifier-list before ‘VAL_TYPE’ prototypes.h:252: error: storage class specified for parameter ‘SOCK_OPT’ prototypes.h:256: error: storage class specified for parameter ‘CONF_TYPE’ prototypes.h:269: error: storage class specified for parameter ‘s_poll_set’ prototypes.h:278: error: storage class specified for parameter ‘DISK_FILE’ prototypes.h:285: error: storage class specified for parameter ‘FD’ prototypes.h:290: error: storage class specified for parameter ‘max_clients’ prototypes.h:291: error: storage class specified for parameter ‘num_clients’ prototypes.h:327: warning: parameter names (without types) in function declaration prototypes.h:347: error: storage class specified for parameter ‘cli_index’ prototypes.h:347: error: storage class specified for parameter ‘opt_index’ prototypes.h:350: error: expected ‘)’ before ‘*’ token prototypes.h:355: error: expected declaration specifiers or ‘...’ before ‘CONF_TYPE’ prototypes.h:361: error: expected specifier-qualifier-list before ‘SERVICE_OPTIONS’ prototypes.h:363: warning: struct has no members prototypes.h:363: error: storage class specified for parameter ‘UI_DATA’ prototypes.h:365: error: expected ‘)’ before ‘*’ token prototypes.h:370: error: expected ‘)’ before ‘*’ token prototypes.h:374: error: expected declaration specifiers before ‘s_poll_set’ prototypes.h:375: error: expected ‘)’ before ‘*’ token prototypes.h:376: error: expected ‘)’ before ‘*’ token prototypes.h:377: error: expected ‘)’ before ‘*’ token prototypes.h:378: error: expected ‘)’ before ‘*’ token prototypes.h:379: error: expected ‘)’ before ‘*’ token prototypes.h:380: error: expected ‘)’ before ‘*’ token prototypes.h:381: error: expected ‘)’ before ‘*’ token prototypes.h:401: error: expected specifier-qualifier-list before ‘SSL’ prototypes.h:422: error: storage class specified for parameter ‘CLI’ prototypes.h:424: error: expected declaration specifiers before ‘CLI’ prototypes.h:426: error: expected ‘)’ before ‘*’ token prototypes.h:430: error: expected ‘)’ before ‘*’ token prototypes.h:431: error: expected ‘)’ before ‘*’ token prototypes.h:432: error: expected ‘)’ before ‘*’ token prototypes.h:433: error: expected ‘)’ before ‘*’ token prototypes.h:434: error: expected ‘)’ before ‘*’ token prototypes.h:436: error: expected ‘)’ before ‘*’ token prototypes.h:450: error: storage class specified for parameter ‘PROTOCOL_TYPE’ prototypes.h:453: error: expected ‘)’ before ‘*’ token prototypes.h:457: error: expected ‘)’ before ‘*’ token prototypes.h:458: error: expected ‘)’ before ‘*’ token prototypes.h:459: error: expected ‘)’ before ‘*’ token prototypes.h:460: error: expected ‘)’ before ‘*’ token prototypes.h:461: error: expected ‘)’ before ‘*’ token prototypes.h:462: warning: type defaults to ‘int’ in declaration of ‘SOCKADDR_UNION’ prototypes.h:462: error: expected ‘;’, ‘,’ or ‘)’ before ‘*’ token prototypes.h:493: error: storage class specified for parameter ‘SECTION_CODE’ prototypes.h:495: warning: parameter names (without types) in function declaration prototypes.h:496: warning: parameter names (without types) in function declaration prototypes.h:500: error: expected declaration specifiers or ‘...’ before ‘CLI’ prototypes.h:548: error: expected declaration specifiers before ‘DISK_FILE’ prototypes.h:550: error: expected declaration specifiers before ‘DISK_FILE’ prototypes.h:551: error: expected ‘)’ before ‘*’ token prototypes.h:552: error: expected ‘)’ before ‘*’ token prototypes.h:553: error: expected ‘)’ before ‘*’ token prototypes.h:563: error: expected ‘)’ before ‘*’ token str.c:49: error: storage class specified for parameter ‘canary’ str.c:50: error: storage class specified for parameter ‘canary_initialized’ str.c:50: error: parameter ‘canary_initialized’ is initialized str.c:52: error: storage class specified for parameter ‘ALLOC_LIST’ str.c:55: error: expected specifier-qualifier-list before ‘ALLOC_LIST’ str.c:57: warning: struct has no members str.c:57: error: storage class specified for parameter ‘ALLOC_TLS’ str.c:60: error: expected specifier-qualifier-list before ‘ALLOC_LIST’ str.c:67: warning: struct has no members str.c:59: warning: empty declaration str.c:73: error: expected ‘)’ before ‘*’ token str.c:74: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:75: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:77: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:85: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:95: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:157: error: storage class specified for parameter ‘pthread_key’ str.c:159: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:163: error: expected ‘)’ before ‘*’ token str.c:167: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token str.c:191: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:198: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:210: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:228: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:262: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:291: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:315: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token str.c:326: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token common.h:449: warning: type of ‘SSL_COMP’ defaults to ‘int’ str.c:157: error: declaration for parameter ‘pthread_key’ but no such parameter str.c:57: error: declaration for parameter ‘ALLOC_TLS’ but no such parameter str.c:52: error: declaration for parameter ‘ALLOC_LIST’ but no such parameter str.c:50: error: declaration for parameter ‘canary_initialized’ but no such parameter str.c:49: error: declaration for parameter ‘canary’ but no such parameter prototypes.h:581: error: declaration for parameter ‘str_printf’ but no such parameter prototypes.h:580: error: declaration for parameter ‘str_vprintf’ but no such parameter prototypes.h:579: error: declaration for parameter ‘str_dup’ but no such parameter prototypes.h:577: error: declaration for parameter ‘str_free_debug’ but no such parameter prototypes.h:575: error: declaration for parameter ‘str_detach_debug’ but no such parameter prototypes.h:573: error: declaration for parameter ‘str_realloc_debug’ but no such parameter prototypes.h:571: error: declaration for parameter ‘str_alloc_debug’ but no such parameter prototypes.h:570: error: declaration for parameter ‘str_stats’ but no such parameter prototypes.h:569: error: declaration for parameter ‘str_cleanup’ but no such parameter prototypes.h:568: error: declaration for parameter ‘str_canary_init’ but no such parameter prototypes.h:567: error: declaration for parameter ‘str_init’ but no such parameter prototypes.h:562: error: declaration for parameter ‘libwrap_init’ but no such parameter prototypes.h:500: error: declaration for parameter ‘create_client’ but no such parameter prototypes.h:499: error: declaration for parameter ‘stunnel_thread_id’ but no such parameter prototypes.h:498: error: declaration for parameter ‘stunnel_process_id’ but no such parameter prototypes.h:497: error: declaration for parameter ‘sthreads_init’ but no such parameter prototypes.h:496: error: declaration for parameter ‘leave_critical_section’ but no such parameter prototypes.h:495: error: declaration for parameter ‘enter_critical_section’ but no such parameter prototypes.h:493: error: declaration for parameter ‘SECTION_CODE’ but no such parameter prototypes.h:463: error: declaration for parameter ‘s_gai_strerror’ but no such parameter prototypes.h:452: error: declaration for parameter ‘find_protocol_id’ but no such parameter prototypes.h:450: error: declaration for parameter ‘PROTOCOL_TYPE’ but no such parameter prototypes.h:425: error: declaration for parameter ‘client_thread’ but no such parameter prototypes.h:422: error: declaration for parameter ‘CLI’ but no such parameter prototypes.h:395: error: declaration for parameter ‘make_sockets’ but no such parameter prototypes.h:394: error: declaration for parameter ‘get_socket_error’ but no such parameter prototypes.h:393: error: declaration for parameter ‘set_socket_options’ but no such parameter prototypes.h:366: error: declaration for parameter ‘sslerror’ but no such parameter prototypes.h:363: error: declaration for parameter ‘UI_DATA’ but no such parameter prototypes.h:356: error: declaration for parameter ‘apply_conf’ but no such parameter prototypes.h:355: error: declaration for parameter ‘parse_conf’ but no such parameter prototypes.h:354: error: declaration for parameter ‘parse_commandline’ but no such parameter prototypes.h:349: error: declaration for parameter ‘ssl_init’ but no such parameter prototypes.h:347: error: declaration for parameter ‘opt_index’ but no such parameter prototypes.h:347: error: declaration for parameter ‘cli_index’ but no such parameter prototypes.h:343: error: declaration for parameter ‘pty_allocate’ but no such parameter prototypes.h:339: error: declaration for parameter ‘s_strerror’ but no such parameter prototypes.h:338: error: declaration for parameter ‘log_error’ but no such parameter prototypes.h:337: error: declaration for parameter ‘sockerror’ but no such parameter prototypes.h:336: error: declaration for parameter ‘ioerror’ but no such parameter prototypes.h:334: error: declaration for parameter ‘fatal_debug’ but no such parameter prototypes.h:328: error: declaration for parameter ‘s_log’ but no such parameter prototypes.h:327: error: declaration for parameter ‘log_flush’ but no such parameter prototypes.h:326: error: declaration for parameter ‘log_close’ but no such parameter prototypes.h:325: error: declaration for parameter ‘log_open’ but no such parameter prototypes.h:323: error: declaration for parameter ‘syslog_close’ but no such parameter prototypes.h:322: error: declaration for parameter ‘syslog_open’ but no such parameter prototypes.h:317: error: declaration for parameter ‘set_nonblock’ but no such parameter prototypes.h:316: error: declaration for parameter ‘s_accept’ but no such parameter prototypes.h:315: error: declaration for parameter ‘s_socketpair’ but no such parameter prototypes.h:314: error: declaration for parameter ‘s_pipe’ but no such parameter prototypes.h:313: error: declaration for parameter ‘s_socket’ but no such parameter prototypes.h:311: error: declaration for parameter ‘get_limits’ but no such parameter prototypes.h:306: error: declaration for parameter ‘stunnel_info’ but no such parameter prototypes.h:304: error: declaration for parameter ‘child_status’ but no such parameter prototypes.h:302: error: declaration for parameter ‘signal_post’ but no such parameter prototypes.h:300: error: declaration for parameter ‘drop_privileges’ but no such parameter prototypes.h:298: error: declaration for parameter ‘bind_ports’ but no such parameter prototypes.h:297: error: declaration for parameter ‘unbind_ports’ but no such parameter prototypes.h:296: error: declaration for parameter ‘daemon_loop’ but no such parameter prototypes.h:295: error: declaration for parameter ‘main_configure’ but no such parameter prototypes.h:294: error: declaration for parameter ‘main_initialize’ but no such parameter prototypes.h:291: error: declaration for parameter ‘num_clients’ but no such parameter prototypes.h:290: error: declaration for parameter ‘max_clients’ but no such parameter prototypes.h:285: error: declaration for parameter ‘FD’ but no such parameter prototypes.h:278: error: declaration for parameter ‘DISK_FILE’ but no such parameter prototypes.h:269: error: declaration for parameter ‘s_poll_set’ but no such parameter prototypes.h:256: error: declaration for parameter ‘CONF_TYPE’ but no such parameter prototypes.h:252: error: declaration for parameter ‘SOCK_OPT’ but no such parameter prototypes.h:244: error: declaration for parameter ‘OPT_UNION’ but no such parameter prototypes.h:236: error: declaration for parameter ‘VAL_TYPE’ but no such parameter prototypes.h:222: error: declaration for parameter ‘SERVICE_OPTIONS’ but no such parameter prototypes.h:114: error: declaration for parameter ‘GLOBAL_OPTIONS’ but no such parameter prototypes.h:72: error: declaration for parameter ‘COMP_TYPE’ but no such parameter prototypes.h:67: error: declaration for parameter ‘SOCKADDR_LIST’ but no such parameter prototypes.h:61: error: declaration for parameter ‘SOCKADDR_UNION’ but no such parameter prototypes.h:50: error: declaration for parameter ‘LOG_MODE’ but no such parameter str.c:342: error: expected ‘{’ at end of input common.h:449: warning: unused parameter ‘SSL_COMP’ str.c:157: warning: unused parameter ‘pthread_key’ str.c:57: warning: unused parameter ‘ALLOC_TLS’ str.c:52: warning: unused parameter ‘ALLOC_LIST’ str.c:50: warning: unused parameter ‘canary_initialized’ str.c:49: warning: unused parameter ‘canary’ prototypes.h:581: warning: unused parameter ‘str_printf’ prototypes.h:580: warning: unused parameter ‘str_vprintf’ prototypes.h:579: warning: unused parameter ‘str_dup’ prototypes.h:577: warning: unused parameter ‘str_free_debug’ prototypes.h:575: warning: unused parameter ‘str_detach_debug’ prototypes.h:573: warning: unused parameter ‘str_realloc_debug’ prototypes.h:571: warning: unused parameter ‘str_alloc_debug’ prototypes.h:570: warning: unused parameter ‘str_stats’ prototypes.h:569: warning: unused parameter ‘str_cleanup’ prototypes.h:568: warning: unused parameter ‘str_canary_init’ prototypes.h:567: warning: unused parameter ‘str_init’ prototypes.h:562: warning: unused parameter ‘libwrap_init’ prototypes.h:500: warning: unused parameter ‘create_client’ prototypes.h:499: warning: unused parameter ‘stunnel_thread_id’ prototypes.h:498: warning: unused parameter ‘stunnel_process_id’ prototypes.h:497: warning: unused parameter ‘sthreads_init’ prototypes.h:496: warning: unused parameter ‘leave_critical_section’ prototypes.h:495: warning: unused parameter ‘enter_critical_section’ prototypes.h:493: warning: unused parameter ‘SECTION_CODE’ prototypes.h:463: warning: unused parameter ‘s_gai_strerror’ prototypes.h:452: warning: unused parameter ‘find_protocol_id’ prototypes.h:450: warning: unused parameter ‘PROTOCOL_TYPE’ prototypes.h:425: warning: unused parameter ‘client_thread’ prototypes.h:422: warning: unused parameter ‘CLI’ prototypes.h:395: warning: unused parameter ‘make_sockets’ prototypes.h:394: warning: unused parameter ‘get_socket_error’ prototypes.h:393: warning: unused parameter ‘set_socket_options’ prototypes.h:366: warning: unused parameter ‘sslerror’ prototypes.h:363: warning: unused parameter ‘UI_DATA’ prototypes.h:356: warning: unused parameter ‘apply_conf’ prototypes.h:355: warning: unused parameter ‘parse_conf’ prototypes.h:354: warning: unused parameter ‘parse_commandline’ prototypes.h:349: warning: unused parameter ‘ssl_init’ prototypes.h:347: warning: unused parameter ‘opt_index’ prototypes.h:347: warning: unused parameter ‘cli_index’ prototypes.h:343: warning: unused parameter ‘pty_allocate’ prototypes.h:339: warning: unused parameter ‘s_strerror’ prototypes.h:338: warning: unused parameter ‘log_error’ prototypes.h:337: warning: unused parameter ‘sockerror’ prototypes.h:336: warning: unused parameter ‘ioerror’ prototypes.h:334: warning: unused parameter ‘fatal_debug’ prototypes.h:328: warning: unused parameter ‘s_log’ prototypes.h:327: warning: unused parameter ‘log_flush’ prototypes.h:326: warning: unused parameter ‘log_close’ prototypes.h:325: warning: unused parameter ‘log_open’ prototypes.h:323: warning: unused parameter ‘syslog_close’ prototypes.h:322: warning: unused parameter ‘syslog_open’ prototypes.h:317: warning: unused parameter ‘set_nonblock’ prototypes.h:316: warning: unused parameter ‘s_accept’ prototypes.h:315: warning: unused parameter ‘s_socketpair’ prototypes.h:314: warning: unused parameter ‘s_pipe’ prototypes.h:313: warning: unused parameter ‘s_socket’ prototypes.h:311: warning: unused parameter ‘get_limits’ prototypes.h:306: warning: unused parameter ‘stunnel_info’ prototypes.h:304: warning: unused parameter ‘child_status’ prototypes.h:302: warning: unused parameter ‘signal_post’ prototypes.h:300: warning: unused parameter ‘drop_privileges’ prototypes.h:298: warning: unused parameter ‘bind_ports’ prototypes.h:297: warning: unused parameter ‘unbind_ports’ prototypes.h:296: warning: unused parameter ‘daemon_loop’ prototypes.h:295: warning: unused parameter ‘main_configure’ prototypes.h:294: warning: unused parameter ‘main_initialize’ prototypes.h:291: warning: unused parameter ‘num_clients’ prototypes.h:290: warning: unused parameter ‘max_clients’ prototypes.h:285: warning: unused parameter ‘FD’ prototypes.h:278: warning: unused parameter ‘DISK_FILE’ prototypes.h:269: warning: unused parameter ‘s_poll_set’ prototypes.h:256: warning: unused parameter ‘CONF_TYPE’ prototypes.h:252: warning: unused parameter ‘SOCK_OPT’ prototypes.h:244: warning: unused parameter ‘OPT_UNION’ prototypes.h:236: warning: unused parameter ‘VAL_TYPE’ prototypes.h:222: warning: unused parameter ‘SERVICE_OPTIONS’ prototypes.h:114: warning: unused parameter ‘GLOBAL_OPTIONS’ prototypes.h:72: warning: unused parameter ‘COMP_TYPE’ prototypes.h:67: warning: unused parameter ‘SOCKADDR_LIST’ prototypes.h:61: warning: unused parameter ‘SOCKADDR_UNION’ prototypes.h:50: warning: unused parameter ‘LOG_MODE’ make[2]: *** [stunnel-str.o] Error 1 make[2]: Leaving directory `/root/stunnel-4.53/src' make[1]: *** [all] Error 2 make[1]: Leaving directory `/root/stunnel-4.53/src' make: *** [all-recursive] Error 1 [root@localhost stunnel-4.53]# ~Yours, Scott

1 0

SNI with protocol=proxy ?
by Marek Majkowski 29 Mar '12

29 Mar '12

Hi, I'm having trouble using SNI with protocol=proxy. Stunnel seems to ignore protocol option defined in the 'children', for example now protocol will be ignored: [https_default] accept = 443 connect = 10443 cert = a.crt key = a.key [https_one] sni = https_default:one.org protocol = proxy connect = 10444 cert = one.crt key = one.key On the other hand when defined on the 'default' resource, the connect option seems to be ignored: [https_default] accept = 443 protocol = proxy connect = 10443 cert = a.crt key = a.key [https_one] sni = https_default:one.org connect = 10444 ;; nope! still 10443 cert = one.crt key = one.key Any suggestions? Cheers, Marek

3 6

RMI with SSL
by Anoop Joseph 29 Mar '12

29 Mar '12

Hi, We have an existing RMI server which is not SSL aware and is based on Java version 1.4.1. We want to use stunnel to make this existing RMI server SSL aware. Checking the official website of stunnel the support to following protocols were found cifs , connect, imap, nntp, pgsql, pop3, proxy and smtp. As no reference to JRMP was available, wondering if stunnel can be used to make the existing non SSL RMI server SSL aware. If this is possible then we belive that it would be achived by providing the mapping between the port configured with stunel and the existing port used by RMI. Also the eixsitng RMI server would have to undergo minial change using this approach. Your help is highly appreciated. Thanks in advance. Best Regards, Anoop

1 0

Unable to clean compile
by Jeffrey Walton 26 Mar '12

26 Mar '12

Hi All, A clean compile is a security gate for me, and I'm having problems meeting the goal on a Fedora 14 box (x64). Jeff [jeffrey@studio stunnel-4.53]$ ./configure CFLAGS="-Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap" configure: **************************************** initialization checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out ... configure: **************************************** success [jeffrey@studio stunnel-4.53]$ make clean [jeffrey@studio stunnel-4.53]$ make Making all in src make[1]: Entering directory `/home/jeffrey/stunnel-4.53/src' make all-am make[2]: Entering directory `/home/jeffrey/stunnel-4.53/src' /bin/sh ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT env.lo -MD -MP -MF .deps/env.Tpo -c -o env.lo env.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT env.lo -MD -MP -MF .deps/env.Tpo -c env.c -fPIC -DPIC -o .libs/env.o env.c: In function ‘getpeername’: env.c:64:9: warning: conversion to ‘uint16_t’ from ‘int’ may alter its value mv -f .deps/env.Tpo .deps/env.Plo /bin/sh ../libtool --tag=CC --mode=link gcc -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -avoid-version -o libstunnel.la -rpath /usr/local/lib/stunnel env.lo -lz -ldl -lutil -lnsl -lpthread libtool: link: gcc -shared .libs/env.o -lz -ldl -lutil -lnsl -lpthread -Wl,-z -Wl,relro -Wl,-z -Wl,now -Wl,-z -Wl,noexecstack -Wl,-z -Wl,noexecheap -Wl,-soname -Wl,libstunnel.so -o .libs/libstunnel.so libtool: link: ( cd ".libs" && rm -f "libstunnel.la" && ln -s "../libstunnel.la" "libstunnel.la" ) gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-str.o -MD -MP -MF .deps/stunnel-str.Tpo -c -o stunnel-str.o `test -f 'str.c' || echo './'`str.c str.c: In function ‘str_vprintf’: str.c:100:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result str.c:103:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result str.c:110:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-str.Tpo .deps/stunnel-str.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-file.o -MD -MP -MF .deps/stunnel-file.Tpo -c -o stunnel-file.o `test -f 'file.c' || echo './'`file.c file.c: In function ‘file_getline’: file.c:136:9: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value file.c: In function ‘file_putline’: file.c:162:5: warning: conversion to ‘int’ from ‘size_t’ may alter its value file.c:163:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result file.c:173:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result file.c:173:5: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value mv -f .deps/stunnel-file.Tpo .deps/stunnel-file.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-client.o -MD -MP -MF .deps/stunnel-client.Tpo -c -o stunnel-client.o `test -f 'client.c' || echo './'`client.c client.c: In function ‘transfer’: client.c:647:13: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result client.c:647:13: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value client.c:665:13: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result client.c:665:13: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value client.c:675:17: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result client.c:750:17: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result client.c: In function ‘auth_user’: client.c:930:9: warning: conversion to ‘in_port_t’ from ‘int’ may alter its value client.c: In function ‘connect_remote’: client.c:1110:13: warning: conversion to ‘u16’ from ‘int’ may alter its value mv -f .deps/stunnel-client.Tpo .deps/stunnel-client.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-log.o -MD -MP -MF .deps/stunnel-log.Tpo -c -o stunnel-log.o `test -f 'log.c' || echo './'`log.c mv -f .deps/stunnel-log.Tpo .deps/stunnel-log.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-options.o -MD -MP -MF .deps/stunnel-options.Tpo -c -o stunnel-options.o `test -f 'options.c' || echo './'`options.c options.c: In function ‘parse_global_option’: options.c:362:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:448:13: warning: conversion to ‘int’ from ‘__gid_t’ may change the sign of the result options.c:451:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:474:13: warning: conversion to ‘int’ from ‘__uid_t’ may change the sign of the result options.c:477:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c: In function ‘parse_service_option’: options.c:840:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1039:9: warning: conversion to ‘int’ from ‘long unsigned int’ may alter its value options.c:1042:9: warning: conversion to ‘long unsigned int’ from ‘int’ may change the sign of the result options.c:1346:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1367:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1387:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1408:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1428:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1485:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c: In function ‘parse_conf’: options.c:1585:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c:1620:9: warning: conversion to ‘int’ from ‘size_t’ may alter its value options.c:1651:9: warning: conversion to ‘int’ from ‘size_t’ may alter its value options.c: In function ‘parse_ssl_option’: options.c:2004:13: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c: In function ‘parse_socket_option’: options.c:2162:9: warning: conversion to ‘int’ from ‘long int’ may alter its value options.c: In function ‘argalloc’: options.c:2391:5: warning: conversion to ‘int’ from ‘size_t’ may alter its value options.c:2393:5: warning: conversion to ‘long unsigned int’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-options.Tpo .deps/stunnel-options.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-protocol.o -MD -MP -MF .deps/stunnel-protocol.Tpo -c -o stunnel-protocol.o `test -f 'protocol.c' || echo './'`protocol.c protocol.c: In function ‘cifs_server’: protocol.c:200:5: warning: conversion to ‘u16’ from ‘int’ may alter its value protocol.c: In function ‘connect_client’: protocol.c:531:13: warning: conversion to ‘int’ from ‘size_t’ may alter its value protocol.c: In function ‘ntlm’: protocol.c:607:9: warning: conversion to ‘int’ from ‘long int’ may alter its value protocol.c: In function ‘ntlm3’: protocol.c:640:5: warning: conversion to ‘unsigned int’ from ‘size_t’ may alter its value protocol.c:641:5: warning: conversion to ‘unsigned int’ from ‘long unsigned int’ may alter its value protocol.c:647:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:651:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:652:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:653:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:655:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:656:5: warning: conversion to ‘char’ from ‘unsigned int’ may alter its value protocol.c:670:5: warning: conversion to ‘int’ from ‘size_t’ may alter its value protocol.c:683:5: warning: conversion to ‘int’ from ‘unsigned int’ may change the sign of the result protocol.c: In function ‘crypt_DES’: protocol.c:692:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:693:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:694:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:695:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:696:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:697:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c:698:5: warning: conversion to ‘unsigned char’ from ‘int’ may alter its value protocol.c: In function ‘base64’: protocol.c:736:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-protocol.Tpo .deps/stunnel-protocol.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-network.o -MD -MP -MF .deps/stunnel-network.Tpo -c -o stunnel-network.o `test -f 'network.c' || echo './'`network.c network.c: In function ‘set_socket_options’: network.c:376:13: warning: conversion to ‘int’ from ‘size_t’ may alter its value network.c:382:17: warning: conversion to ‘socklen_t’ from ‘int’ may change the sign of the result network.c: In function ‘write_blocking’: network.c:492:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result network.c:492:9: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value network.c: In function ‘read_blocking’: network.c:524:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result network.c:524:9: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value network.c: In function ‘fd_putline’: network.c:544:5: warning: conversion to ‘int’ from ‘size_t’ may alter its value network.c: In function ‘fd_getline’: network.c:576:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-network.Tpo .deps/stunnel-network.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-resolver.o -MD -MP -MF .deps/stunnel-resolver.Tpo -c -o stunnel-resolver.o `test -f 'resolver.c' || echo './'`resolver.c resolver.c: In function ‘name2addrlist’: resolver.c:124:9: warning: conversion to ‘long unsigned int’ from ‘int’ may change the sign of the result resolver.c: In function ‘hostport2addrlist’: resolver.c:190:9: warning: conversion to ‘long unsigned int’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-resolver.Tpo .deps/stunnel-resolver.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-ssl.o -MD -MP -MF .deps/stunnel-ssl.Tpo -c -o stunnel-ssl.o `test -f 'ssl.c' || echo './'`ssl.c mv -f .deps/stunnel-ssl.Tpo .deps/stunnel-ssl.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-ctx.o -MD -MP -MF .deps/stunnel-ctx.Tpo -c -o stunnel-ctx.o `test -f 'ctx.c' || echo './'`ctx.c ctx.c: In function ‘context_init’: ctx.c:119:9: warning: conversion to ‘unsigned int’ from ‘size_t’ may alter its value ctx.c: In function ‘password_cb’: ctx.c:431:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result ctx.c:434:9: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result ctx.c:436:9: warning: conversion to ‘int’ from ‘size_t’ may alter its value ctx.c: In function ‘sess_new_cb’: ctx.c:455:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result ctx.c:459:9: warning: conversion to ‘unsigned int’ from ‘long int’ may alter its value ctx.c:459:9: warning: conversion to ‘unsigned int’ from ‘int’ may change the sign of the result ctx.c: In function ‘sess_get_cb’: ctx.c:472:9: warning: conversion to ‘unsigned int’ from ‘int’ may change the sign of the result ctx.c: In function ‘cache_transfer’: ctx.c:540:5: warning: conversion to ‘u_char’ from ‘unsigned int’ may alter its value ctx.c:579:5: warning: conversion to ‘int’ from ‘ssize_t’ may alter its value ctx.c:604:5: warning: conversion to ‘long unsigned int’ from ‘int’ may change the sign of the result ctx.c:604:5: warning: conversion to ‘unsigned int’ from ‘long unsigned int’ may alter its value mv -f .deps/stunnel-ctx.Tpo .deps/stunnel-ctx.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-verify.o -MD -MP -MF .deps/stunnel-verify.Tpo -c -o stunnel-verify.o `test -f 'verify.c' || echo './'`verify.c verify.c: In function ‘cert_check’: verify.c:246:17: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result verify.c: In function ‘log_time’: verify.c:528:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-verify.Tpo .deps/stunnel-verify.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-sthreads.o -MD -MP -MF .deps/stunnel-sthreads.Tpo -c -o stunnel-sthreads.o `test -f 'sthreads.c' || echo './'`sthreads.c sthreads.c: In function ‘create_client’: sthreads.c:318:5: warning: conversion to ‘size_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-sthreads.Tpo .deps/stunnel-sthreads.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-fd.o -MD -MP -MF .deps/stunnel-fd.Tpo -c -o stunnel-fd.o `test -f 'fd.c' || echo './'`fd.c fd.c: In function ‘get_limits’: fd.c:64:5: warning: conversion to ‘int’ from ‘long int’ may alter its value mv -f .deps/stunnel-fd.Tpo .deps/stunnel-fd.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-stunnel.o -MD -MP -MF .deps/stunnel-stunnel.Tpo -c -o stunnel-stunnel.o `test -f 'stunnel.c' || echo './'`stunnel.c stunnel.c: In function ‘drop_privileges’: stunnel.c:410:9: warning: conversion to ‘__gid_t’ from ‘int’ may change the sign of the result stunnel.c:415:9: warning: conversion to ‘gid_t’ from ‘int’ may change the sign of the result stunnel.c:423:9: warning: conversion to ‘__uid_t’ from ‘int’ may change the sign of the result mv -f .deps/stunnel-stunnel.Tpo .deps/stunnel-stunnel.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-pty.o -MD -MP -MF .deps/stunnel-pty.Tpo -c -o stunnel-pty.o `test -f 'pty.c' || echo './'`pty.c mv -f .deps/stunnel-pty.Tpo .deps/stunnel-pty.Po gcc -DHAVE_CONFIG_H -I. -I/usr/kerberos/include -I/usr//include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -MT stunnel-libwrap.o -MD -MP -MF .deps/stunnel-libwrap.Tpo -c -o stunnel-libwrap.o `test -f 'libwrap.c' || echo './'`libwrap.c mv -f .deps/stunnel-libwrap.Tpo .deps/stunnel-libwrap.Po /bin/sh ../libtool --tag=CC --mode=link gcc -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap -Wall -Wextra -Wno-long-long -pedantic -L/usr//lib64 -L/usr//lib -lssl -lcrypto -o stunnel stunnel-str.o stunnel-file.o stunnel-client.o stunnel-log.o stunnel-options.o stunnel-protocol.o stunnel-network.o stunnel-resolver.o stunnel-ssl.o stunnel-ctx.o stunnel-verify.o stunnel-sthreads.o stunnel-fd.o stunnel-stunnel.o stunnel-pty.o stunnel-libwrap.o -lz -ldl -lutil -lnsl -lpthread libtool: link: gcc -pthread -fstack-protector -fPIE -Wall -Wextra -Wconversion -Wformat=2 -Wformat-security -fstack-protector-all -Wl,-z -Wl,relro -Wl,-z -Wl,now -Wl,-z -Wl,noexecstack -Wl,-z -Wl,noexecheap -Wall -Wextra -Wno-long-long -pedantic -o stunnel stunnel-str.o stunnel-file.o stunnel-client.o stunnel-log.o stunnel-options.o stunnel-protocol.o stunnel-network.o stunnel-resolver.o stunnel-ssl.o stunnel-ctx.o stunnel-verify.o stunnel-sthreads.o stunnel-fd.o stunnel-stunnel.o stunnel-pty.o stunnel-libwrap.o -L/usr//lib64 -L/usr//lib -lssl -lcrypto -lz -ldl -lutil -lnsl -lpthread -pthread make[2]: Leaving directory `/home/jeffrey/stunnel-4.53/src' make[1]: Leaving directory `/home/jeffrey/stunnel-4.53/src' Making all in doc make[1]: Entering directory `/home/jeffrey/stunnel-4.53/doc' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/home/jeffrey/stunnel-4.53/doc' Making all in tools make[1]: Entering directory `/home/jeffrey/stunnel-4.53/tools' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/home/jeffrey/stunnel-4.53/tools' make[1]: Entering directory `/home/jeffrey/stunnel-4.53' make[1]: Nothing to be done for `all-am'. make[1]: Leaving directory `/home/jeffrey/stunnel-4.53' [jeffrey@studio stunnel-4.53]$

2 1

Can this be done by Stunnel
by Alan C. Bonnici 23 Mar '12

23 Mar '12

Thomas, After a few exchanges a few hours ago with the folk at STunnel I can confirm that the "problem" was that the company uses host headers. Here is the procedure I used to sort it out: 1. Modify the windows host file and add the following entry 127.0.0.1 rest.nexmo.com. If your STunnel ir running on a different machines, set the 127.0.0.1 to the IP address of the Stunnel server. 2. Add the following to the stunnel.conf file (you may alter the port) [nexmo] client = yes accept = 9013 connect = 174.120.166.82:443 TIMEOUTclose = 0 3. Start sending secure SMSs as follows (note the port number much match the one set in stunnel.conf) http://rest.nexmo.com:9013/sms/xml?username=xxxxxxx&password=xxxxxxx&from=xx xxxxxx&to=xxxxxxx&text=xxxxxxx This will bypass the issue related to host headers and I can confirm that the solution has worked. The setup is useful if using server technology that does not natively support SSL as is our case. Hope this helps. Alan ---------------------------------------------------------------------------- ---------------------------------------- Alan; While I don't generally use Stunnel for HTTPS, I found your question interesting. Since I'm always trying to experiment with configurations of and applications for Stunnel, I decided to give it a whirl. I'm happy to confirm that it works just fine for me. I'm not connecting to the site in your example, but the principle is the same. Perhaps the answer lies in how your browser parses that URL, and how, as a result, it inserts that data into the stream. For the experiment, I used Firefox 9.0.1 running under Windows XP x86 with Stunnel version 4.53. My test config was: debug = 6 fips = no delay = yes output = stunnel.log [https] client = yes accept = 127.0.1.21:7777 connect = www.host.domain:443 Where www.host.domain is just an example. As you can see, I did not include any TIMEOUTclose statement in my config file. Then I pointed the browser at http://127.0.1.21:7777/do/mypage/longparameterstringhere. As far as I can tell, all of the parameters contained in that string were passed on to the web site without any difficulty. You might want to check your log window to see what's happening when you try to connect via Stunnel. Here's an actual example of the connection activity from my log: 2012.03.22 21:20:51 LOG5[992:2548]: Service [https] accepted connection from ***.**.***.*:2671 2012.03.22 21:20:51 LOG6[992:2548]: connect_blocking: connecting ***.***.***.***:443 2012.03.22 21:20:51 LOG5[992:2548]: connect_blocking: connected ***.***.***.***:443 2012.03.22 21:20:51 LOG5[992:2548]: Service [https] connected remote server from ***.**.***.*:2672 2012.03.22 21:20:51 LOG6[992:2548]: SSL connected: new session negotiated 2012.03.22 21:20:51 LOG6[992:2548]: Negotiated TLSv1/SSLv3 ciphersuite: RC4-SHA (128-bit encryption) 2012.03.22 21:20:51 LOG6[992:2548]: Compression: null, expansion: null 2012.03.22 21:21:00 LOG6[992:2548]: SSL_shutdown successfully sent close_notify alert 2012.03.22 21:21:00 LOG5[992:2548]: Connection closed: 1879 byte(s) sent to SSL, 128546 byte(s) sent to socket If you have to post again, it would be helpful if you included more detail. Good luck with your application! Thomas On 3/21/2012 9:50 AM, Alan C. Bonnici wrote: > > Hi, > > I am new to STunnel. I am trying to connect to a service provided by > nexmo.com. > > If from a browser I type the following: > > https://rest.nexmo.com/sms/xml?username=xxxxxxx&password=xxxxx&from=xxxxxxx& to=xxxxxxx&text=xxxxxxxxxx > <https://rest.nexmo.com/sms/xml?username=xxxxxxx&password=xxxxx&from=xxxxxxx &to=xxxxxxx&text=xxxxxxxxxx> > > The process works. > > I just installed stunnel and have the following config file > > ; Debugging stuff (may useful for troubleshooting) > > ;debug = 7 > > ;output = stunnel.log > > ; Certificate/key is needed in server mode and optional in client mode > > cert = stunnel.pem > > ;key = stunnel.pem > > ; Disable support for insecure SSLv2 protocol > > options = NO_SSLv2 > > [nexmo] > > client = yes > > accept = 9012 > > connect = rest.nexmo.com:443 > > TIMEOUTclose = 0 > > When I type > > http://127.0.0.1:9012/sms/xml?username=xxxxxxx&password=xxxxx&from=xxxxxxx&t o=xxxxxxx&text=xxxxxxxxxx > > > it does not. > > Can anyone please confirm whether what I am trying to do is doable and > maybe highlight what I am doing wrong. > > Regards, > > Alan > > > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users -- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.

1 0

Can this be done by Stunnel
by Alan C. Bonnici 23 Mar '12

23 Mar '12

Hi, I am new to STunnel. I am trying to connect to a service provided by nexmo.com. If from a browser I type the following: https://rest.nexmo.com/sms/xml?username=xxxxxxx <https://rest.nexmo.com/sms/xml?username=xxxxxxx&password=xxxxx&from=xxxxxxx &to=xxxxxxx&text=xxxxxxxxxx> &password=xxxxx&from=xxxxxxx&to=xxxxxxx&text=xxxxxxxxxx The process works. I just installed stunnel and have the following config file ; Debugging stuff (may useful for troubleshooting) ;debug = 7 ;output = stunnel.log ; Certificate/key is needed in server mode and optional in client mode cert = stunnel.pem ;key = stunnel.pem ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 [nexmo] client = yes accept = 9012 connect = rest.nexmo.com:443 TIMEOUTclose = 0 When I type http://127.0.0.1:9012/sms/xml? username=xxxxxxx&password=xxxxx&from=xxxxxxx&to=xxxxxxx&text=xxxxxxxxxx it does not. Can anyone please confirm whether what I am trying to do is doable and maybe highlight what I am doing wrong. Regards, Alan

2 1

Can this be done by Stunnel [Nexmo]
by Alan C. Bonnici 22 Mar '12

22 Mar '12

Hi, Nexmo offer (free trial) SMS messages that can be programmed into systems. I've attached the log file when calling the service: 2012.03.22 10:41:13 LOG7[5024:8232]: No limit detected for the number of clients 2012.03.22 10:41:13 LOG5[5024:8232]: stunnel 4.53 on x86-pc-mingw32-gnu platform 2012.03.22 10:41:13 LOG5[5024:8232]: Compiled/running with OpenSSL 0.9.8s-fips 4 Jan 2012 2012.03.22 10:41:13 LOG5[5024:8232]: Threading:WIN32 SSL:+ENGINE+OCSP+FIPS Auth:none Sockets:SELECT+IPv6 2012.03.22 10:41:13 LOG5[5024:8232]: Reading configuration from file stunnel.conf 2012.03.22 10:41:14 LOG5[5024:8232]: FIPS mode is enabled 2012.03.22 10:41:14 LOG7[5024:8232]: Compression not enabled 2012.03.22 10:41:14 LOG7[5024:8232]: Snagged 64 random bytes from C:/.rnd 2012.03.22 10:41:14 LOG7[5024:8232]: Wrote 1024 new random bytes to C:/.rnd 2012.03.22 10:41:14 LOG7[5024:8232]: PRNG seeded successfully 2012.03.22 10:41:14 LOG6[5024:8232]: Initializing service section [nexmo] 2012.03.22 10:41:14 LOG7[5024:8232]: Certificate: stunnel.pem 2012.03.22 10:41:14 LOG7[5024:8232]: Certificate loaded 2012.03.22 10:41:14 LOG7[5024:8232]: Key file: stunnel.pem 2012.03.22 10:41:14 LOG7[5024:8232]: Private key loaded 2012.03.22 10:41:14 LOG7[5024:8232]: SSL options set: 0x01000004 2012.03.22 10:41:14 LOG5[5024:8232]: Configuration successful 2012.03.22 10:41:14 LOG7[5024:8232]: Service [nexmo] (FD=280) bound to 0.0.0.0:9012 2012.03.22 10:44:09 LOG7[5024:8232]: Service [nexmo] accepted (FD=444) from 127.0.0.1:3692 2012.03.22 10:44:09 LOG7[5024:8232]: Creating a new thread 2012.03.22 10:44:09 LOG7[5024:8232]: New thread created 2012.03.22 10:44:09 LOG7[5024:3280]: Service [nexmo] started 2012.03.22 10:44:09 LOG5[5024:3280]: Service [nexmo] accepted connection from 127.0.0.1:3692 2012.03.22 10:44:09 LOG6[5024:3280]: connect_blocking: connecting 174.120.166.82:443 2012.03.22 10:44:09 LOG7[5024:3280]: connect_blocking: s_poll_wait 174.120.166.82:443: waiting 10 seconds 2012.03.22 10:44:09 LOG5[5024:3280]: connect_blocking: connected 174.120.166.82:443 2012.03.22 10:44:09 LOG5[5024:3280]: Service [nexmo] connected remote server from 10.252.0.51:3693 2012.03.22 10:44:09 LOG7[5024:3280]: Remote socket (FD=476) initialized 2012.03.22 10:44:10 LOG7[5024:3280]: Peer certificate was cached (6499 bytes) 2012.03.22 10:44:10 LOG6[5024:3280]: SSL connected: new session negotiated 2012.03.22 10:44:10 LOG6[5024:3280]: Negotiated TLSv1/SSLv3 ciphersuite: AES256-SHA (256-bit encryption) 2012.03.22 10:44:10 LOG6[5024:3280]: Compression: null, expansion: null 2012.03.22 10:44:10 LOG7[5024:3280]: SSL closed on SSL_read 2012.03.22 10:44:10 LOG7[5024:3280]: Sent socket write shutdown 2012.03.22 10:44:10 LOG7[5024:3280]: Socket closed on read 2012.03.22 10:44:10 LOG7[5024:3280]: Sending close_notify alert 2012.03.22 10:44:10 LOG6[5024:3280]: SSL_shutdown successfully sent close_notify alert 2012.03.22 10:44:10 LOG5[5024:3280]: Connection closed: 388 byte(s) sent to SSL, 200 byte(s) sent to socket 2012.03.22 10:44:10 LOG7[5024:3280]: Remote socket (FD=476) closed 2012.03.22 10:44:10 LOG7[5024:3280]: Local socket (FD=444) closed 2012.03.22 10:44:10 LOG7[5024:3280]: Service [nexmo] finished (0 left) 2012.03.22 10:44:10 LOG7[5024:8232]: Service [nexmo] accepted (FD=440) from 127.0.0.1:3694 2012.03.22 10:44:10 LOG7[5024:8232]: Creating a new thread 2012.03.22 10:44:10 LOG7[5024:8232]: New thread created 2012.03.22 10:44:10 LOG7[5024:8864]: Service [nexmo] started 2012.03.22 10:44:10 LOG5[5024:8864]: Service [nexmo] accepted connection from 127.0.0.1:3694 2012.03.22 10:44:10 LOG6[5024:8864]: connect_blocking: connecting 174.120.166.82:443 2012.03.22 10:44:10 LOG7[5024:8864]: connect_blocking: s_poll_wait 174.120.166.82:443: waiting 10 seconds 2012.03.22 10:44:10 LOG5[5024:8864]: connect_blocking: connected 174.120.166.82:443 2012.03.22 10:44:10 LOG5[5024:8864]: Service [nexmo] connected remote server from 10.252.0.51:3695 2012.03.22 10:44:10 LOG7[5024:8864]: Remote socket (FD=424) initialized 2012.03.22 10:44:10 LOG6[5024:8864]: SSL connected: previous session reused 2012.03.22 10:44:10 LOG7[5024:8864]: SSL closed on SSL_read 2012.03.22 10:44:10 LOG7[5024:8864]: Sent socket write shutdown 2012.03.22 10:44:10 LOG7[5024:8864]: Socket closed on read 2012.03.22 10:44:10 LOG7[5024:8864]: Sending close_notify alert 2012.03.22 10:44:10 LOG6[5024:8864]: SSL_shutdown successfully sent close_notify alert 2012.03.22 10:44:10 LOG5[5024:8864]: Connection closed: 269 byte(s) sent to SSL, 200 byte(s) sent to socket 2012.03.22 10:44:10 LOG7[5024:8864]: Remote socket (FD=424) closed 2012.03.22 10:44:10 LOG7[5024:8864]: Local socket (FD=440) closed 2012.03.22 10:44:10 LOG7[5024:8864]: Service [nexmo] finished (0 left) 2012.03.22 10:44:10 LOG7[5024:8232]: Service [nexmo] accepted (FD=460) from 127.0.0.1:3696 2012.03.22 10:44:10 LOG7[5024:8232]: Creating a new thread 2012.03.22 10:44:10 LOG7[5024:8232]: New thread created 2012.03.22 10:44:10 LOG7[5024:5820]: Service [nexmo] started 2012.03.22 10:44:10 LOG5[5024:5820]: Service [nexmo] accepted connection from 127.0.0.1:3696 2012.03.22 10:44:10 LOG6[5024:5820]: connect_blocking: connecting 174.120.166.82:443 2012.03.22 10:44:10 LOG7[5024:5820]: connect_blocking: s_poll_wait 174.120.166.82:443: waiting 10 seconds 2012.03.22 10:44:11 LOG5[5024:5820]: connect_blocking: connected 174.120.166.82:443 2012.03.22 10:44:11 LOG5[5024:5820]: Service [nexmo] connected remote server from 10.252.0.51:3697 2012.03.22 10:44:11 LOG7[5024:5820]: Remote socket (FD=476) initialized 2012.03.22 10:44:11 LOG6[5024:5820]: SSL connected: previous session reused 2012.03.22 10:44:11 LOG7[5024:5820]: SSL closed on SSL_read 2012.03.22 10:44:11 LOG7[5024:5820]: Sent socket write shutdown 2012.03.22 10:44:11 LOG7[5024:5820]: Socket closed on read 2012.03.22 10:44:11 LOG7[5024:5820]: Sending close_notify alert 2012.03.22 10:44:11 LOG6[5024:5820]: SSL_shutdown successfully sent close_notify alert 2012.03.22 10:44:11 LOG5[5024:5820]: Connection closed: 299 byte(s) sent to SSL, 200 byte(s) sent to socket 2012.03.22 10:44:11 LOG7[5024:5820]: Remote socket (FD=476) closed 2012.03.22 10:44:11 LOG7[5024:5820]: Local socket (FD=460) closed 2012.03.22 10:44:11 LOG7[5024:5820]: Service [nexmo] finished (0 left) 2012.03.22 10:44:11 LOG7[5024:8232]: Service [nexmo] accepted (FD=448) from 127.0.0.1:3698 2012.03.22 10:44:11 LOG7[5024:8232]: Creating a new thread 2012.03.22 10:44:11 LOG7[5024:8232]: New thread created 2012.03.22 10:44:11 LOG7[5024:8476]: Service [nexmo] started 2012.03.22 10:44:11 LOG5[5024:8476]: Service [nexmo] accepted connection from 127.0.0.1:3698 2012.03.22 10:44:11 LOG6[5024:8476]: connect_blocking: connecting 174.120.166.82:443 2012.03.22 10:44:11 LOG7[5024:8476]: connect_blocking: s_poll_wait 174.120.166.82:443: waiting 10 seconds 2012.03.22 10:44:11 LOG5[5024:8476]: connect_blocking: connected 174.120.166.82:443 2012.03.22 10:44:11 LOG5[5024:8476]: Service [nexmo] connected remote server from 10.252.0.51:3699 2012.03.22 10:44:11 LOG7[5024:8476]: Remote socket (FD=424) initialized 2012.03.22 10:44:11 LOG6[5024:8476]: SSL connected: previous session reused 2012.03.22 10:44:12 LOG7[5024:8476]: SSL closed on SSL_read 2012.03.22 10:44:12 LOG7[5024:8476]: Sent socket write shutdown 2012.03.22 10:44:12 LOG7[5024:8476]: Socket closed on read 2012.03.22 10:44:12 LOG7[5024:8476]: Sending close_notify alert 2012.03.22 10:44:12 LOG6[5024:8476]: SSL_shutdown successfully sent close_notify alert 2012.03.22 10:44:12 LOG5[5024:8476]: Connection closed: 299 byte(s) sent to SSL, 200 byte(s) sent to socket 2012.03.22 10:44:12 LOG7[5024:8476]: Remote socket (FD=424) closed 2012.03.22 10:44:12 LOG7[5024:8476]: Local socket (FD=448) closed 2012.03.22 10:44:12 LOG7[5024:8476]: Service [nexmo] finished (0 left) ----------------------------------- Message: 4 Date: Wed, 21 Mar 2012 15:50:59 +0100 From: "Alan C. Bonnici" <chribonn(a)gmail.com> To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] Can this be done by Stunnel Message-ID: <006b01cd0772$0869f3c0$193ddb40$(a)gmail.com> Content-Type: text/plain; charset="us-ascii" Hi, I am new to STunnel. I am trying to connect to a service provided by nexmo.com. If from a browser I type the following: https://rest.nexmo.com/sms/xml?username=xxxxxxx <https://rest.nexmo.com/sms/xml?username=xxxxxxx&password=xxxxx&from=xxxxxxx &to=xxxxxxx&text=xxxxxxxxxx> &password=xxxxx&from=xxxxxxx&to=xxxxxxx&text=xxxxxxxxxx The process works. I just installed stunnel and have the following config file ; Debugging stuff (may useful for troubleshooting) ;debug = 7 ;output = stunnel.log ; Certificate/key is needed in server mode and optional in client mode cert = stunnel.pem ;key = stunnel.pem ; Disable support for insecure SSLv2 protocol options = NO_SSLv2 [nexmo] client = yes accept = 9012 connect = rest.nexmo.com:443 TIMEOUTclose = 0 When I type http://127.0.0.1:9012/sms/xml? username=xxxxxxx&password=xxxxx&from=xxxxxxx&to=xxxxxxx&text=xxxxxxxxxx it does not. Can anyone please confirm whether what I am trying to do is doable and maybe highlight what I am doing wrong. Regards, Alan

1 0

Feature request: restricting incoming IP-adress to a list of allowed adresses
by Ivanko B 22 Mar '12

22 Mar '12

also possibly with smth like callback

2 1

Intermittent connection resets
by Jordan K 22 Mar '12

22 Mar '12

Hi, I've spent the better part of the day trying to find answers on this, and haven't had much luck. I have two systems that talk to eachother via stunnel. In the last week or so, I have noticed a number of errors in the application using the tunnel (messaging application), requiring multiple re-sends, etc. This is my setup. Both server and client run CentOS 6.2, with the RPM version of stunnel. Though it isn't the latest version, I believe RedHat do release any critical bugs in their updated RPMs. I did also go through the ChangeLog but couldn't find anything implemented since 4.29 that seemed to deal with what I'm seeing. stunnel 4.29 on x86_64-unknown-linux-gnu with OpenSSL 1.0.0-fips 29 Mar 2010 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Global options debug = 5 pid = /var/run/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /etc/stunnel/stunnel.pem ciphers = ALL:!aNULL:!eNULL:!SSLv2 key = /etc/stunnel/stunnel.pem session = 300 seconds stack = 65536 bytes sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none Socket option defaults: Option Accept Local Remote OS default SO_DEBUG -- -- -- 0 SO_DONTROUTE -- -- -- 0 SO_KEEPALIVE -- -- -- 0 SO_LINGER -- -- -- 0:0 SO_OOBINLINE -- -- -- 0 SO_RCVBUF -- -- -- 87380 SO_SNDBUF -- -- -- 16384 SO_RCVLOWAT -- -- -- 1 SO_SNDLOWAT -- -- -- 1 SO_RCVTIMEO -- -- -- 0:0 SO_SNDTIMEO -- -- -- 0:0 SO_REUSEADDR 1 -- -- 0 SO_BINDTODEVICE -- -- -- -- TCP_KEEPCNT -- -- -- 9 TCP_KEEPIDLE -- -- -- 7200 TCP_KEEPINTVL -- -- -- 75 IP_TOS -- -- -- 0 IP_TTL -- -- -- 64 TCP_NODELAY -- -- -- 0 Common config (basically default file released by RedHat, with certs and ports configured) : ---------------- ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = SSLv3 ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /var/run/stunnel/ setuid = stunnel setgid = stunnel ; PID is created inside the chroot jail pid = /stunnel.pid ; Some debugging stuff useful for troubleshooting debug = 7 output = /var/log/stunnel.log ------------------- When the connection breaks, the logs (debug=7) on both sides are: Client: 2012.03.21 19:58:14 LOG7[30685:140185543952128]: SSL state (connect): before/connect initialization 2012.03.21 19:58:14 LOG7[30685:140185543952128]: SSL state (connect): SSLv3 write client hello A 2012.03.21 19:58:14 LOG3[30685:140185543952128]: SSL_connect: Peer suddenly disconnected 2012.03.21 19:58:14 LOG5[30685:140185543952128]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket Server: 2012.03.21 19:58:14 LOG3[22230:140462283343616]: SSL_accept: Peer suddenly disconnected 2012.03.21 19:58:14 LOG5[22230:140462283343616]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket As I mentioned, it happens intermittently, with probably 50% of the connections working just fine, and the rest being disconnected. It ALWAYS seems to happen just after the client 'write client hello A', as opposed to later in the SSL handshake. I ran a tcpdump on both sides, it is below. Note that both the client and the server are NATd behind firewalls, on the server the port stunnel listens on (31112) is opened through the firewall. CLIENT (192.168.22.120, NATd externally as 66.66.66.66): 18:21:57.009887 IP 192.168.22.120.55747 > 77.77.77.77.31112: Flags [S], seq 2556598106, win 14600, options [mss 1460,sackOK,TS val 88488311 ecr 0,nop,wscale 7], length 0 18:21:57.076130 IP 77.77.77.77.31112 > 192.168.22.120.55747: Flags [S.], seq 351052925, ack 2556598107, win 14480, options [mss 1460,sackOK,TS val 646044220 ecr 88488311,nop,wscale 7], length 0 18:21:57.076195 IP 192.168.22.120.55747 > 77.77.77.77.31112: Flags [.], ack 1, win 115, options [nop,nop,TS val 88488377 ecr 646044220], length 0 18:21:57.077234 IP 192.168.22.120.55747 > 77.77.77.77.31112: Flags [P.], seq 1:140, ack 1, win 115, options [nop,nop,TS val 88488378 ecr 646044220], length 139 18:21:57.143582 IP 77.77.77.77.31112 > 192.168.22.120.55747: Flags [.], ack 140, win 122, options [nop,nop,TS val 646044288 ecr 88488378], length 0 18:21:57.143982 IP 77.77.77.77.31112 > 192.168.22.120.55747: Flags [RP.], seq 1, ack 140, win 122, length 0 SERVER (10.65.0.130, NATd externally as 77.77.77.77): 18:21:57.042122 IP 66.66.66.66.7760 > 10.65.0.130.http: Flags [S], seq 4074124673, win 14600, options [mss 1460,sackOK,TS val 88488311 ecr 0,nop,wscale 7], length 0 18:21:57.042161 IP 10.65.0.130.http > 66.66.66.66.7760: Flags [S.], seq 458906148, ack 4074124674, win 14480, options [mss 1460,sackOK,TS val 646044220 ecr 88488311,nop,wscale 7], length 0 18:21:57.108325 IP 66.66.66.66.7760 > 10.65.0.130.http: Flags [.], ack 1, win 115, options [nop,nop,TS val 88488377 ecr 646044220], length 0 18:21:57.109507 IP 66.66.66.66.7760 > 10.65.0.130.http: Flags [P.], seq 1:140, ack 1, win 115, options [nop,nop,TS val 88488378 ecr 646044220], length 139 18:21:57.109532 IP 10.65.0.130.http > 66.66.66.66.7760: Flags [.], ack 140, win 122, options [nop,nop,TS val 646044288 ecr 88488378], length 0 18:21:57.110092 IP 10.65.0.130.http > 66.66.66.66.7760: Flags [P.], seq 1:178, ack 140, win 122, options [nop,nop,TS val 646044288 ecr 88488378], length 177 18:21:57.175518 IP 66.66.66.66.7760 > 10.65.0.130.http: Flags [R.], seq 140, ack 1, win 115, length 0 Based on what I am seeing, a mysterious RST packet gets received by both sides, which causes them to terminate the session. Neither side originates any RST packets. When the connection is successful, the tcpdump looks a lot more normal, with an appropriate FIN exchange closing the session once the data has been sent. My questions are - am I missing something obvious? Am I correct in reading the above as some firewall or router between the two servers breaking the TCP connection by sending TCP RSTs to both endpoints? any help is appreciated. jordan

1 0

running stunnel from inetd
by Guylhem 21 Mar '12

21 Mar '12

Hello To follow up on my test, I would like to try and run stunnel from inetd However I wonder if anyone has an experience, suggestions, and some inetd.conf examples. I read it was possible in the FAQ but I didn't see a lot of examples Should I use a configuration file (for the global parameters) then specify connect= params? ex : 443 stream tcp6 nowait nobody /sbin/stunnel /etc/stunnel.conf connect=127.0.0.1:80 TIMEOUTclose=0 Thanks Guylhem

1 0

question about Ephemeral Diffie-Hellman
by Guylhem 21 Mar '12

21 Mar '12

Hello I've read that EDH calculations were ca cause of significant slow up on http://matt.io/technobabble/hivemind_devops_alert:_nginx_does_not_suck_at_s… I'm running stunnel on a embedded Linux/MIPS, where I'm trying to light up the load. Is it possible to disable EDH? If so, how? I couldn't find any info on that. Thanks Guylhem

2 3

stunnel with smb from 2 networks behind firewalls
by Philippe 21 Mar '12

21 Mar '12

Hello, Here is my setup : [PCA]-------------[Firewall-A]---------------{INTERNET}-----------[45.212.56.178:21213|Firewall-B|192.168.0.1:8139]--------[PCB] PCA : Windows 7 stunnel.conf : [smb] client = yes accept = 10.232.232.232:139 connect = 45.212.56.178:21213 PCB : Ubuntu Oneiric 11.10 stunnel.conf : [smb] accept = 8139 connect = 139 When I try to connect a network drive from PCA to a remote drive of PCB here are the stunnel.log of PCA : 2012.03.19 13:47:02 LOG5[3744:2564]: Reading configuration from file stunnel.conf 2012.03.19 13:47:02 LOG5[3744:2564]: FIPS mode is enabled 2012.03.19 13:47:02 LOG7[3744:2564]: Compression not enabled 2012.03.19 13:47:02 LOG7[3744:2564]: Snagged 64 random bytes from C:/.rnd 2012.03.19 13:47:02 LOG7[3744:2564]: Wrote 0 new random bytes to C:/.rnd 2012.03.19 13:47:02 LOG7[3744:2564]: PRNG seeded successfully 2012.03.19 13:47:02 LOG6[3744:2564]: Initializing SSL context for service smb 2012.03.19 13:47:02 LOG7[3744:2564]: Certificate: stunnel.pem 2012.03.19 13:47:02 LOG7[3744:2564]: Certificate loaded 2012.03.19 13:47:02 LOG7[3744:2564]: Key file: stunnel.pem 2012.03.19 13:47:02 LOG7[3744:2564]: Private key loaded 2012.03.19 13:47:02 LOG7[3744:2564]: SSL options set: 0x01000004 2012.03.19 13:47:02 LOG6[3744:2564]: SSL context initialized 2012.03.19 13:47:02 LOG5[3744:2564]: Configuration successful 2012.03.19 13:47:02 LOG7[3744:2564]: Service smb closed FD=200 2012.03.19 13:47:13 LOG5[3744:3940]: Service smb accepted connection from 10.232.232.232:50004 2012.03.19 13:47:13 LOG5[3744:3940]: connect_blocking: connected 45.212.56.178:21213 2012.03.19 13:47:13 LOG5[3744:3940]: Service smb connected remote server from 192.168.3.4:50005 2012.03.19 13:47:43 LOG3[3744:3940]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2012.03.19 13:47:43 LOG5[3744:3940]: Connection reset: 143 bytes sent to SSL, 0 bytes sent to socket No logs on PCB it seems that the SSL connection doesn't cross the firewall B, if not I would saw logs in stunnel.log of PCB isn't it ? What can I do better to make this setup working ? Does the firewall B porforwarding is blocking the process ? Best regards Philippe

4 10