- stunnel-users - stunnel.org

stunnel-4.20 server loop on AIX 5.3
by Peter Heimann 28 May '07

28 May '07

Under heavy usage, stunnel-4.20 on AIX 5.3 enters into a loop with high CPU load. Test setup: client ------------> gateway ------------> server ApacheBench 2.0.40-dev stunnel-4.20 Apache 1.3 in server mode OpenSSL 0.9.8d stunnel 4.20 on powerpc-ibm-aix5.3.0.0 with OpenSSL 0.9.8d 28 Sep 2006 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 ; stunnel configuration file, server mode cert = /etc/stunnel.pem setuid = stunnel setgid = stunnel pid = /tmp/stunnel.pid debug = local3.notice output = /tmp/stunnel.log [https] accept = gateway:4433 connect = server:80 The first client requests are processed without error, then some connections fail: % ab -n 1000 -c 70 https://gateway:4433/ This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 [...] Test aborted after 10 failures Apr_socket_connect(): Invalid argument (22) Total of 705 requests completed One or more connections stay in state CLOSE_WAIT, and stunnel is chewing away CPU cycles (CPU usage >99%). % lsof -a -i -c stunnel COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME stunnel 196856 stunnel 6u IPv4 0xf100020002feeb98 0t0 TCP gateway:4433 (LISTEN) stunnel 196856 stunnel 46u IPv4 0xf100020002e98398 0t0 TCP gateway:4433 ->server:50271 (CLOSE_WAIT) In this state, attaching a debugger shows that stunnel is stuck in a loop in init_ssl() within client.c: +321 while(1) { +322 if(c->opt->option.client) +323 i=SSL_connect(c->ssl); +324 else +325 i=SSL_accept(c->ssl); +326 err=SSL_get_error(c->ssl, i); /* err==5 */ /* ... */ +349 if(err==SSL_ERROR_SYSCALL) { +350 switch(get_last_socket_error()) { +351 case EINTR: +353 case EAGAIN: /* loop continues */ +354 continue; +355 } +356 } SSL_accept() returns with error, SSL_get_error() returns 5 (SSL_ERROR_SYSCALL). get_last_socket_error() returns EAGAIN, and the loop continues without end. Nevertheless, new connection requests still get processed. Even before CPU usage goes up, for every new connection, SSL_accept() results in SSL_ERROR_SYSCALL for 20 to 1800 times before finally data is exchanged. stunnel enters this endless loop on AIX both with OpenSSL 0.9.8d and OpenSSL 0.9.8e. If I replace the AIX gateway machine with one running stunnel-4.20 on Solaris, I do not experience any problems. What might trigger this loop on AIX 5.3? How can it be avoided? -- Peter Heimann _______________________________________________________________ SMS schreiben mit WEB.DE FreeMail - einfach, schnell und kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192

1 0

Reconfiguration while running
by James Moe 27 May '07

27 May '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, Does Stunnel offer a way to reload the configuration file? Usually that is done with SIGHUP but the code looks like it just terminates. Does it have a way to sense that the conf has changed and reloads it? Or must Stunnel be terminated and restarted? - -- jimoe (at) sohnen-moe (dot) com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (OS/2) iD8DBQFGWhbJzTcr8Prq0ZMRAoy8AJ4ocDWfBEvEfoIYoypURg2hTxUh0gCfajo1 nVXpKD5iBFEx6ZHauPemnsU= =vGul -----END PGP SIGNATURE-----

1 0

Quick question relating to end to end encryption with hapoxy:
by lists 27 May '07

27 May '07

I'm using stunnel to decrypt HTTPS and pass it to HAPROXY to insert a cookie and it works very well and very fast. Is their a way of making HAPROXY talk to the backend servers in HTTPS? i.e.. End to end encryption. Can I re-direct it back through stunnel in reverse? Thanks in advance, Malcolm.

2 1

Brocken Connections
by Manfred Alfaré 25 May '07

25 May '07

Hi! I have some trouble using STUNNEL on WIN98 to secure connections to HFS (Http File Server), and hope, somebody can help me. I can connect to HFS with the Browser (Firefox 2.0.0.3, IE 6.0, on the same machine HFS is running, an other one in LAN and a third via internet) and download files, bat every downloaded File is corrupt. In most cases, transfer seems to terminate normally, but the downloaded file ist to short, sometimes there is popup, that tells me, that the file could not be read, because the connection is broken. The log file shows the following: ********************************* stunnel 4.20 on x86-pc-mingw32-gnu with OpenSSL 0.9.8d 28 Sep 2006 Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv4 No limit detected for the number of clients https accepted connection from 85.127.28.154:63819 https connected remote server from 127.0.0.1:1287 Connection closed: 1632 bytes sent to SSL, 476 bytes sent to socket https accepted connection from 85.127.28.154:63821 https accepted connection from 85.127.28.154:63823 https connected remote server from 127.0.0.1:1290 https connected remote server from 127.0.0.1:1291 Connection closed: 919 bytes sent to SSL, 349 bytes sent to socket Connection closed: 720 bytes sent to SSL, 402 bytes sent to socket https accepted connection from 85.127.28.154:63825 https accepted connection from 85.127.28.154:63827 https connected remote server from 127.0.0.1:1294 https connected remote server from 127.0.0.1:1295 Connection closed: 715 bytes sent to SSL, 402 bytes sent to socket Connection closed: 277 bytes sent to SSL, 402 bytes sent to socket https accepted connection from 85.127.28.154:63829 https connected remote server from 127.0.0.1:1297 Connection closed: 269 bytes sent to SSL, 402 bytes sent to socket https accepted connection from 85.127.28.154:63831 https connected remote server from 127.0.0.1:1299 Connection closed: 920 bytes sent to SSL, 349 bytes sent to socket https accepted connection from 85.127.28.154:63833 https connected remote server from 127.0.0.1:1301 https accepted connection from 85.127.28.154:63835 https connected remote server from 127.0.0.1:1303 Connection closed: 920 bytes sent to SSL, 349 bytes sent to socket readsocket: Connection reset by peer (WSAECONNRESET) (10054) Connection reset: 1289938 bytes sent to SSL, 481 bytes sent to socket ************************* My STUNNEL.CONF looks like this: ******************************** ; File with certificate and private key cert = stunnel.pem key = stunnel.pem ; Log (1= minimal, 5=recommended, 7=all) and log file) ; Preceed with a ";" to disable logging debug = 5 output = stunnel.log ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Data compression algorithm: zlib or rle compression = zlib ; SSL bug options / NO SSL:v2 (SSLv3 and TLSv1 is enabled) options = ALL options = NO_SSLv2 ; Service-level configuration ; Stunnel listens to port 443 (HTTPS) to any IP ; and connects to port 44300 (HFS) on localhost [https] accept = 0.0.0.0:443 connect = 127.0.0.1:44300 TIMEOUTclose = 0 ************************************* Your help will be appreciated. Regards Manfred Alfare (not a native englisch speaker :-(

1 0

Re: [stunnel-users] stunnel-users Digest, Vol 34, Issue 5
by GNUtoo＠no-log.org 23 May '07

23 May '07

> >>> in cygwin i have the following errors: >>> $ openssl req -new -x509 -days 365 -nodes -config >>> /etc/stunnel/stunnel.conf -out stunnel.pem -keyout stunnel.pem >>> Generating a 512 bit RSA private key >>> ..++++++++++++ >>> .....++++++++++++ >>> writing new private key to 'stunnel.pem' >>> ----- >>> unable to find 'distinguished_name' in config >>> problems making Certificate Request >>> 1988:error:0E06D06C:configuration file routines:NCONF_get_string:no >>> value:conf_lib.c:329:group=req name=distinguished_name >>> >>> $ /usr/bin/stunnel.exe >>> 2007.05.13 22:37:12 LOG4[2188:6422536]: Wrong permissions on >>> /etc/stunnel/mail.pem >>> 2007.05.13 22:37:12 LOG3[2188:6422536]: Error reading certificate file: >>> /etc/stunnel/stunnel.pem >>> 2007.05.13 22:37:12 LOG3[2188:6422536]: error stack: 140DC009 : >>> error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib >>> 2007.05.13 22:37:12 LOG3[2188:6422536]: >>> SSL_CTX_use_certificate_chain_file: 906D06C: error:0906D06C:PEM >>> routines:PEM_read_bio:no start line >>> >>> and i ran all as Administrator >> >> Can you please post your /etc/stunnel/stunnel.conf, and also the results >> of >> 'ls -al /etc/stunnel'. Thanks, Andrew. >> > $ ls -al /etc/stunnel/ > total 6 > drwx------+ 2 FC1 Users 0 May 13 22:37 . > drwx------+ 11 FC1 Users 0 May 13 21:56 .. > lrwxrwxrwx 1 Administrator Nessuno 11 May 13 22:37 mail.pem -> > stunnel.pem > -rwx------ 1 Administrator Nessuno 1578 May 13 22:36 stunnel.conf > -rwx------+ 1 FC1 Users 1533 May 13 22:13 stunnel.conf-sample > -rw-r--r-- 1 Administrator Nessuno 497 May 13 22:36 stunnel.pem > > > $ cat /etc/stunnel/stunnel.conf > #; Sample stunnel configuration file by Michal Trojnara 2002-2006 > #; Some options used here may not be adequate for your particular > configuration > #; Please make sure you understand them (especially the effect of chroot > jail) > > #; Certificate/key is needed in server mode and optional in client mode > #;cert = /etc/stunnel/mail.pem > key = /etc/stunnel/mail.pem > > #; Protocol version (all, SSLv2, SSLv3, TLSv1) > sslVersion = SSLv3 > > #; Some security enhancements for UNIX systems - comment them out on Win32 > chroot = /var/lib/stunnel/ > setuid = nobody > setgid = nobody > #; PID is created inside chroot jail > pid = /stunnel.pid > > #; Some performance tunings > socket = l:TCP_NODELAY=1 > socket = r:TCP_NODELAY=1 > #;compression = rle > > #; 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 = stunnel.log > > #; Use it for client mode > #;client = yes > > #; Service-level configuration > > #;[pop3s] > #;accept = 995 > #;connect = 110 > > #;[imaps] > #;accept = 993 > #;connect = 143 > > #;[ssmtp] > #;accept = 465 > #;connect = 25 > > #;[https] > ##;accept = 443 > #;connect = 80 > #;TIMEOUTclose = 0 > > #; vim:ft=dosini > > [vnc] > accept = 127.0.0.1:5500 > connect = 192.168.1.107:443 now that i have posted the config file...do i need to post something else?

2 1

Re: [stunnel-users] Simple SMTP encryption
by Hans Werner Strube 21 May '07

21 May '07

James Moe wrote: > client = yes > > [smtps] > accept = 127.0.0.1:465 > connect = smtpauth.earthlink.net:25 > > I missed the part somewhere that tells Stunnel to issue a STARTTLS to > the smtp server before attempting to negotiate a TLS connection. Add (under [smtps]): protocol = smtp

1 0

Simple SMTP encryption
by James Moe 19 May '07

19 May '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hello, stunnel 4.20 with OpenSSL 0.9.8d 28 Sep 2006 I wish have my MUA to send messages encrypted to a secure mail server. Stunnel is set up as a client with the following configuration: client = yes [smtps] accept = 127.0.0.1:465 connect = smtpauth.earthlink.net:25 I missed the part somewhere that tells Stunnel to issue a STARTTLS to the smtp server before attempting to negotiate a TLS connection. The "failed handshake" bit is because the server is rejecting the command because of NULLs in the text stream. 501 NULL characters are not allowed in SMTP commands. Then there is the "wrong version" error. I suppose that is a side effect of the handshake failure? Here is a typical connection log: 2007.05.19 12:52:42 LOG7[232:4239]: smtps accepted FD=12 from 127.0.0.1:52672 2007.05.19 12:52:42 LOG7[232:4239]: Creating a new thread 2007.05.19 12:52:42 LOG7[232:4239]: New thread created 2007.05.19 12:52:42 LOG7[264:4239]: smtps started 2007.05.19 12:52:42 LOG7[264:4239]: FD 12 in non-blocking mode 2007.05.19 12:52:42 LOG7[264:4239]: TCP_NODELAY option set on local socket 2007.05.19 12:52:42 LOG5[264:4239]: smtps accepted connection from 127.0.0.1:52672 2007.05.19 12:52:42 LOG7[264:4239]: FD 15 in non-blocking mode 2007.05.19 12:52:42 LOG7[264:4239]: smtps connecting 207.69.189.201:25 2007.05.19 12:52:42 LOG7[264:4239]: connect_wait: waiting 10 seconds 2007.05.19 12:52:42 LOG7[264:4239]: connect_wait: connected 2007.05.19 12:52:42 LOG5[264:4239]: smtps connected remote server from 192.168.69.14:52673 2007.05.19 12:52:42 LOG7[264:4239]: Remote FD=15 initialized 2007.05.19 12:52:42 LOG7[264:4239]: TCP_NODELAY option set on remote socket 2007.05.19 12:52:42 LOG7[264:4239]: SSL state (connect): before/connect initialization 2007.05.19 12:52:42 LOG7[264:4239]: SSL state (connect): SSLv3 write client hello A 2007.05.19 12:52:42 LOG7[264:4239]: SSL alert (write): fatal: handshake failure 2007.05.19 12:52:42 LOG3[264:4239]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2007.05.19 12:52:42 LOG5[264:4239]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.05.19 12:52:42 LOG7[264:4239]: smtps finished (0 left) - -- jimoe (at) sohnen-moe (dot) com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (OS/2) iD8DBQFGT1lQzTcr8Prq0ZMRAv50AJ9Kydmi3F/VBQ8hvpr+HmodUZhJEgCfQjbz TRdvnzpATUH/y3gzA1EXMYo= =jTqm -----END PGP SIGNATURE-----

1 0

Several connections on a short period of time problem
by Teigao, Rafael Coninck 16 May '07

16 May '07

Hi, I'm running Stunnel 4.20 to connect a Win client to a Win server. On the server it runs as a service, but on the client side I call it every time a connection is requested with a different config file (I need dynamic configuration) If I connect, disconnect and connect again very quickly (say, in 10 seconds), the fourth time (usually) that I try to connect will give me error 10060 (timeout) on the client application (not Stunnel). Does Stunnel restrict the amount of connection from the same client based on time or something like that? Thanks, Rafael.

1 0

Re: [stunnel-users] stunnel-users Digest, Vol 34, Issue 4
by GNUtoo＠no-log.org 15 May '07

15 May '07

>> in cygwin i have the following errors: >> $ openssl req -new -x509 -days 365 -nodes -config >> /etc/stunnel/stunnel.conf -out stunnel.pem -keyout stunnel.pem >> Generating a 512 bit RSA private key >> ..++++++++++++ >> .....++++++++++++ >> writing new private key to 'stunnel.pem' >> ----- >> unable to find 'distinguished_name' in config >> problems making Certificate Request >> 1988:error:0E06D06C:configuration file routines:NCONF_get_string:no >> value:conf_lib.c:329:group=req name=distinguished_name >> >> $ /usr/bin/stunnel.exe >> 2007.05.13 22:37:12 LOG4[2188:6422536]: Wrong permissions on >> /etc/stunnel/mail.pem >> 2007.05.13 22:37:12 LOG3[2188:6422536]: Error reading certificate file: >> /etc/stunnel/stunnel.pem >> 2007.05.13 22:37:12 LOG3[2188:6422536]: error stack: 140DC009 : >> error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib >> 2007.05.13 22:37:12 LOG3[2188:6422536]: >> SSL_CTX_use_certificate_chain_file: 906D06C: error:0906D06C:PEM >> routines:PEM_read_bio:no start line >> >> and i ran all as Administrator > > Can you please post your /etc/stunnel/stunnel.conf, and also the results > of > 'ls -al /etc/stunnel'. Thanks, Andrew. > $ ls -al /etc/stunnel/ total 6 drwx------+ 2 FC1 Users 0 May 13 22:37 . drwx------+ 11 FC1 Users 0 May 13 21:56 .. lrwxrwxrwx 1 Administrator Nessuno 11 May 13 22:37 mail.pem -> stunnel.pem -rwx------ 1 Administrator Nessuno 1578 May 13 22:36 stunnel.conf -rwx------+ 1 FC1 Users 1533 May 13 22:13 stunnel.conf-sample -rw-r--r-- 1 Administrator Nessuno 497 May 13 22:36 stunnel.pem $ cat /etc/stunnel/stunnel.conf #; Sample stunnel configuration file by Michal Trojnara 2002-2006 #; Some options used here may not be adequate for your particular configuration #; Please make sure you understand them (especially the effect of chroot jail) #; Certificate/key is needed in server mode and optional in client mode #;cert = /etc/stunnel/mail.pem key = /etc/stunnel/mail.pem #; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = SSLv3 #; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /var/lib/stunnel/ setuid = nobody setgid = nobody #; PID is created inside chroot jail pid = /stunnel.pid #; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 #;compression = rle #; 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 = stunnel.log #; Use it for client mode #;client = yes #; Service-level configuration #;[pop3s] #;accept = 995 #;connect = 110 #;[imaps] #;accept = 993 #;connect = 143 #;[ssmtp] #;accept = 465 #;connect = 25 #;[https] ##;accept = 443 #;connect = 80 #;TIMEOUTclose = 0 #; vim:ft=dosini [vnc] accept = 127.0.0.1:5500 connect = 192.168.1.107:443

1 0

certs problems in cygwin
by GNUtoo＠no-log.org 14 May '07

14 May '07

in cygwin i have the following errors: $ openssl req -new -x509 -days 365 -nodes -config /etc/stunnel/stunnel.conf -out stunnel.pem -keyout stunnel.pem Generating a 512 bit RSA private key ..++++++++++++ .....++++++++++++ writing new private key to 'stunnel.pem' ----- unable to find 'distinguished_name' in config problems making Certificate Request 1988:error:0E06D06C:configuration file routines:NCONF_get_string:no value:conf_lib.c:329:group=req name=distinguished_name $ /usr/bin/stunnel.exe 2007.05.13 22:37:12 LOG4[2188:6422536]: Wrong permissions on /etc/stunnel/mail.pem 2007.05.13 22:37:12 LOG3[2188:6422536]: Error reading certificate file: /etc/stunnel/stunnel.pem 2007.05.13 22:37:12 LOG3[2188:6422536]: error stack: 140DC009 : error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib 2007.05.13 22:37:12 LOG3[2188:6422536]: SSL_CTX_use_certificate_chain_file: 906D06C: error:0906D06C:PEM routines:PEM_read_bio:no start line and i ran all as Administrator

2 1

with the windows version it isn't better...same kind of errors
by GNUtoo＠no-log.org 13 May '07

13 May '07

C:\Programmi\openssl>openssl.exe req -new -x509 -days 365 -nodes -config stunnel .conf -out stunnel.pem -keyout stunnel.pem Loading 'screen' into random state - done Generating a 512 bit RSA private key .....++++++++++++ .......................++++++++++++ writing new private key to 'stunnel.pem' ----- unable to find 'distinguished_name' in config problems making Certificate Request 1772:error:0E06D06C:configuration file routines:NCONF_get_string:no value:./cryp to/conf/conf_lib.c:329:group=req name=distinguished_name 2007.05.13 23:05:03 LOG3[304:860]: Error resolving 'VNC_client_IP_address': Neither nodename nor servname known (EAI_NONAME) Cannot resolve 'VNC_client_IP_address:443' - delaying DNS lookup 2007.05.13 23:05:03 LOG3[304:860]: Error reading certificate file: stunnel.pem 2007.05.13 23:05:03 LOG3[304:860]: error stack: 140DC009 : error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib 2007.05.13 23:05:03 LOG3[304:860]: SSL_CTX_use_certificate_chain_file: 906D06C: error:0906D06C:PEM routines:PEM_read_bio:no start line 2007.05.13 23:05:03 LOG3[304:860]: Server is down

1 0

RTMPS
by Grant Kohler 11 May '07

11 May '07

Has anybody had any luck getting RTMP and stunnel to work together with RTMPS? Thanks, -Grant

1 0

Stunnel-Mozilla Thunderbird 2.0 and Spampal
by Jim 30 Apr '07

30 Apr '07

2 1

RE: [stunnel-users] Vista not connecting to port 139
by Neil Aggarwal 29 Apr '07

29 Apr '07

Alaric: This is strange. When I go to the Security Center, it says the McAfee Personal Firewall is on, but I can't find it in the Start menu, Services, or anywhere else. Any ideas? Thanks, Neil -- Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com FREE! Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details. -----Original Message----- From: Alaric Dailey [mailto:[email protected]] Sent: Thursday, April 26, 2007 3:48 PM To: 'Neil Aggarwal' Subject: RE: [stunnel-users] Vista not connecting to port 139 I would check the windows firewall, or any other security suite you may have. -----Original Message----- From: stunnel-users-bounces(a)mirt.net [mailto:[email protected]] On Behalf Of Neil Aggarwal Sent: Thursday, April 26, 2007 15:30 To: stunnel-users(a)mirt.net Subject: [stunnel-users] Vista not connecting to port 139 Hello: I am trying to map a network drive over an stunnel connection. The server is Linux and the client machine is Windows Vista (Ugh!). I have stunnel installed and working. I have the following in my stunnel.conf: client = yes delay = yes [netDrives] accept = 222.222.222.222:139 connect = www.jammconsulting.com:2139 When I go to map the network drive on vista, I use this command: net use x: \\222.222.222.222\MyShare mypass /user:myuser It eventually gives me an error message about network path not found. Looking at the stunnel window, there are no messages about any connections to the stunnel. If I do: telnet 222.222.222.222 139 the telnet session connects and I see messages about a connection in the stunnel window. Any ideas why Vista is not using port 139? Thanks, Neil -- Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com FREE! Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details. _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users

2 1

Re: [stunnel-users] Handshake failure
by RUTSCHLE Yves 27 Apr '07

27 Apr '07

RUTSCHLE Yves wrote: > Argh. After removing all my debugging printf's, it turns out it doesn't seem > to work after all. Which, if it has to do with signals and timing, is only > partly surprising. Ok, nothing to do with any of that. Deep inside OpenSSL, there is a call to gmtime_r. Deep somewhere in hell (I hope), someone decided that LynxOS' gmtime_r functions would have its arguments *reversed*. REVERSED. I guess they were going for SIXPO complience. So that call would write rubbish in the stack, hence no returning from the call and segfault instead. So, nothing to do with stunnel after all. Thanks for the support anyway! :) Y. - TGIFriday

1 0

[PATCH?] Senting a list of accepted CAs to the client
by Miloslav Trmac 27 Apr '07

27 Apr '07

Hello, stunnel currently does not send a list of accepted CAs, see e.g. https://bugzilla.mozilla.org/show_bug.cgi?id=327001#c20 . Sending the list was #if 0-ed out sometime between stunnel 3.22 and 4.00, with no change log entry AFAICS. Does anyone remember know why was it disabled, and whether it is safe to reenable (e. g. using the attached patch)? Thanks, Mirek

1 0

Vista not connecting to port 139
by Neil Aggarwal 26 Apr '07

26 Apr '07

Hello: I am trying to map a network drive over an stunnel connection. The server is Linux and the client machine is Windows Vista (Ugh!). I have stunnel installed and working. I have the following in my stunnel.conf: client = yes delay = yes [netDrives] accept = 222.222.222.222:139 connect = www.jammconsulting.com:2139 When I go to map the network drive on vista, I use this command: net use x: \\222.222.222.222\MyShare mypass /user:myuser It eventually gives me an error message about network path not found. Looking at the stunnel window, there are no messages about any connections to the stunnel. If I do: telnet 222.222.222.222 139 the telnet session connects and I see messages about a connection in the stunnel window. Any ideas why Vista is not using port 139? Thanks, Neil -- Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com FREE! Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details.

1 0

Stunnel on Vista
by Neil Aggarwal 26 Apr '07

26 Apr '07

Hello: Has anyone used stunnel on Vista? For some stupid reason, it tells me I can't save the stunnel.conf file. Thanks, Neil -- Neil Aggarwal, (214)986-3533, www.JAMMConsulting.com FREE! Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details.

2 2

Re: [stunnel-users] Handshake failure
by RUTSCHLE Yves 26 Apr '07

26 Apr '07

Michal Trojnara wrote: >Some systems require to reset signal handler each time a signal was >received, while for others the handler is executed recursively destroying >CPU stack of running stunnel process. Ah. That'd explain it. Thanks for the tip and the explanations! Y.

1 0

Handshake failure
by RUTSCHLE Yves 26 Apr '07

26 Apr '07

Hello, I am trying to set up a stunnel between two machines running LynxOS, which is a POSIX derivative. I've compiled OpenSSL 0.9.8e, and stunnel 4.20: stunnel 4.20 on i386-unknown-lynxos with OpenSSL 0.9.8e 23 Feb 2007 Threading:FORK SSL:ENGINE Sockets:POLL,IPv4 [...] I use the following config files: ////// server side debug=7 foreground=yes pid= CAfile=valid_certs key=privkey.pem cert=cert.pem verify=1 [SSLTunnel] accept=1235 connect=1234 ////// end server side ////// client side debug=7 foreground=yes pid= CAfile=valid_certs key=privkey.pem cert=cert.pem verify=1 client=yes [SSLTunnel] accept=4234 connect=173.16.1.10:1235 ////// end client side (It's run from different directories so the PEM files are different) After running both stunnels, I connect to the client side and see a beginning of handshake; however, it then breaks down: from afar, it looks like the client doesn't take the server certificate: ///// server trace 2007.04.25 15:33:22 LOG7[58:0]: Snagged 64 random bytes from /home/st07815/.rnd 2007.04.25 15:33:22 LOG7[58:0]: Wrote 1024 new random bytes to /home/st07815/.rnd 2007.04.25 15:33:22 LOG7[58:0]: RAND_status claims sufficient entropy for the PRNG 2007.04.25 15:33:22 LOG7[58:0]: PRNG seeded successfully 2007.04.25 15:33:22 LOG7[58:0]: Certificate: cert.pem 2007.04.25 15:33:22 LOG7[58:0]: Certificate loaded 2007.04.25 15:33:22 LOG7[58:0]: Key file: privkey.pem 2007.04.25 15:33:22 LOG7[58:0]: Private key loaded 2007.04.25 15:33:22 LOG7[58:0]: Loaded verify certificates from valid_certs 2007.04.25 15:33:22 LOG7[58:0]: Loaded valid_certs revocation lookup file 2007.04.25 15:33:22 LOG7[58:0]: SSL context initialized for service SSLTunnel 2007.04.25 15:33:22 LOG5[58:0]: stunnel 4.20 on i386-unknown-lynxos with OpenSSL 0.9.8e 23 Feb 2007 2007.04.25 15:33:22 LOG5[58:0]: Threading:FORK SSL:ENGINE Sockets:POLL,IPv4 2007.04.25 15:33:22 LOG6[58:0]: file ulimit = 64 (can be changed with 'ulimit -n') 2007.04.25 15:33:22 LOG6[58:0]: poll() used - no FD_SETSIZE limit for file descriptors 2007.04.25 15:33:22 LOG5[58:0]: 29 clients allowed 2007.04.25 15:33:22 LOG7[58:0]: FD 3 in non-blocking mode 2007.04.25 15:33:22 LOG7[58:0]: FD 4 in non-blocking mode 2007.04.25 15:33:22 LOG7[58:0]: FD 5 in non-blocking mode 2007.04.25 15:33:22 LOG7[58:0]: SO_REUSEADDR option set on accept socket 2007.04.25 15:33:22 LOG7[58:0]: SSLTunnel bound to 0.0.0.0:1235 2007.04.25 15:33:22 LOG7[58:0]: No pid file being created (end of init, waiting for connection) 2007.04.25 15:34:17 LOG7[58:0]: SSLTunnel accepted FD=6 from 173.16.1.7:1092 2007.04.25 15:34:17 LOG7[68:0]: SSLTunnel started 2007.04.25 15:34:17 LOG7[68:0]: FD 6 in non-blocking mode 2007.04.25 15:34:17 LOG5[68:0]: SSLTunnel accepted connection from 173.16.1.7:1092 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): before/accept initialization 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): SSLv3 read client hello A 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): SSLv3 write server hello A 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): SSLv3 write certificate A 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): SSLv3 write certificate request A 2007.04.25 15:34:17 LOG7[68:0]: SSL state (accept): SSLv3 flush data 2007.04.25 15:34:19 LOG3[68:0]: SSL_accept: Peer suddenly disconnected 2007.04.25 15:34:19 LOG5[68:0]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.04.25 15:34:19 LOG7[58:0]: Cleaning up the signal pipe 2007.04.25 15:34:19 LOG7[58:0]: Process 68 finished with code 0 (0 left) ///// end server trace ///// client trace 2007.04.25 15:33:59 LOG7[12:0]: Snagged 64 random bytes from /home/st07815/.rnd 2007.04.25 15:33:59 LOG7[12:0]: Wrote 1024 new random bytes to /home/st07815/.rnd 2007.04.25 15:33:59 LOG7[12:0]: RAND_status claims sufficient entropy for the PRNG 2007.04.25 15:33:59 LOG7[12:0]: PRNG seeded successfully 2007.04.25 15:33:59 LOG7[12:0]: Certificate: cert.pem 2007.04.25 15:33:59 LOG7[12:0]: Certificate loaded 2007.04.25 15:33:59 LOG7[12:0]: Key file: privkey.pem 2007.04.25 15:33:59 LOG7[12:0]: Private key loaded 2007.04.25 15:33:59 LOG7[12:0]: Loaded verify certificates from valid_certs 2007.04.25 15:33:59 LOG7[12:0]: Loaded valid_certs revocation lookup file 2007.04.25 15:33:59 LOG7[12:0]: SSL context initialized for service SSLTunnel 2007.04.25 15:33:59 LOG5[12:0]: stunnel 4.20 on i386-unknown-lynxos with OpenSSL 0.9.8e 23 Feb 2007 2007.04.25 15:33:59 LOG5[12:0]: Threading:FORK SSL:ENGINE Sockets:POLL,IPv4 2007.04.25 15:33:59 LOG6[12:0]: file ulimit = 64 (can be changed with 'ulimit -n') 2007.04.25 15:33:59 LOG6[12:0]: poll() used - no FD_SETSIZE limit for file descriptors 2007.04.25 15:33:59 LOG5[12:0]: 29 clients allowed 2007.04.25 15:33:59 LOG7[12:0]: FD 3 in non-blocking mode 2007.04.25 15:33:59 LOG7[12:0]: FD 4 in non-blocking mode 2007.04.25 15:33:59 LOG7[12:0]: FD 5 in non-blocking mode 2007.04.25 15:33:59 LOG7[12:0]: SO_REUSEADDR option set on accept socket 2007.04.25 15:33:59 LOG7[12:0]: SSLTunnel bound to 0.0.0.0:4234 2007.04.25 15:33:59 LOG7[12:0]: No pid file being created (end of init, waiting for connection) 2007.04.25 15:34:27 LOG7[12:0]: SSLTunnel accepted FD=6 from 152.14.101.54:64752 2007.04.25 15:34:27 LOG7[27:0]: SSLTunnel started 2007.04.25 15:34:27 LOG7[27:0]: FD 6 in non-blocking mode 2007.04.25 15:34:27 LOG5[27:0]: SSLTunnel accepted connection from 152.14.101.54:64752 2007.04.25 15:34:27 LOG7[27:0]: FD 5 in non-blocking mode 2007.04.25 15:34:27 LOG7[27:0]: SSLTunnel connecting 173.16.1.10:1235 2007.04.25 15:34:27 LOG7[27:0]: connect_wait: waiting 10 seconds 2007.04.25 15:34:27 LOG7[27:0]: connect_wait: connected 2007.04.25 15:34:27 LOG5[27:0]: SSLTunnel connected remote server from 173.16.1.7:1092 2007.04.25 15:34:27 LOG7[27:0]: Remote FD=5 initialized 2007.04.25 15:34:27 LOG7[27:0]: SSL state (connect): before/connect initialization 2007.04.25 15:34:27 LOG7[27:0]: SSL state (connect): SSLv3 write client hello A 2007.04.25 15:34:27 LOG7[27:0]: SSL state (connect): SSLv3 read server hello A 2007.04.25 15:34:28 LOG7[12:0]: Cleaning up the signal pipe 2007.04.25 15:34:28 LOG7[12:0]: Process 27 terminated on signal 11 (0 left) ///// end client trace Now the strange thing is that this very same setup works on Solaris, so I have something wrong with the port of either OpenSSL or stunnel on LynxOS. If someone could give me a hint as to where to start poking, I'd greatly appreciate it. TIA, Y.

2 2

Stunnel with Goldmine 6.70.61214
by Raymond Randall 26 Apr '07

26 Apr '07

Greetings! Use Goldmine with Gmail domain services. Have set up according to Mike Casteel's instructions. However, Goldmine will not download email from the Gmail (the GMail address: rayrandall(a)ethosadvisory.com) Here is the stunnel.conf file: client=yes [pop3] accept=9995 connect=pop.gmail.com:995 [smtp] accept=465 connect=smtp.gmail.com:465 POP and SMTP set to: 127.0.0.1 Here is the stunnel report: 2007.04.26 06:32:20 LOG3[1972:1996]: Error resolving 'pop.gmail.com': Neither nodename nor servname known (EAI_NONAME) Cannot resolve 'pop.gmail.com:995' - delaying DNS lookup 2007.04.26 06:32:20 LOG3[1972:1996]: Error resolving 'smtp.gmail.com': Neither nodename nor servname known (EAI_NONAME) Cannot resolve 'smtp.gmail.com:465' - delaying DNS lookup 2007.04.26 06:32:20 LOG5[1972:1996]: stunnel 4.16 on x86-pc-mingw32-gnu with OpenSSL 0.9.7e 25 Oct 2004 2007.04.26 06:32:20 LOG5[1972:1996]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2007.04.26 06:32:24 LOG5[1972:424]: No limit detected for the number of clients 2007.04.26 07:11:56 LOG5[1972:1204]: pop3 connected from 127.0.0.1:1600 2007.04.26 07:14:01 LOG5[1972:1204]: Connection closed: 2795 bytes sent to SSL, 662451 bytes sent to socket Perhaps this is a Goldmine configuration error. Not sure, and appreciate suggestions. Ray Randall -- Ethos Advisory Services Ray Randall 617-275-5565 Fax: 877-895-3756 http://www.ethosadvisory.com Information provided by Ethos is based on sources we believe reliable. Ethos does not offer legal or accounting services. Information contained in this email message is confidential and may contain privileged information. Any review or use of the information contained in this email message by persons other than the intended recipient(s) is prohibited. Content of this email is illustrative and educational; it is not a recommendation to purchase or sell. The examples presented do not take into consideration commissions, tax implications or other transaction costs, which may significantly affect the economic consequences of a given strategy. Mutual fund investing involves risk, including the possible loss of principal. Index performance returns do not reflect any management fees, transaction costs, or expenses. Past performance does not guarantee future results.

1 0

Connecting via rtmps to Red5 server
by David Schulberg 25 Apr '07

25 Apr '07

Hi, I have been led to stunnel as the way to get a Flash application to communicate securely with Red5 server. Red5 doesn't directly support ssl connectivity but using rtmps protocol (rtmp tunnelled via https) clients should be able to connect to Red5 if stunnel handles the encrypted traffic on port 443 and passes unencrypted communications back and forth to the Red5 on a port it expects to receive rtmp communication.. (refer http://www.adobe.com/devnet/flashcom/articles/firewalls_proxy04.html) The log file I get when I attempt to talk rtmps is shown below 2007.04.25 18:19:04 LOG7[3932:3384]: New thread created 2007.04.25 18:19:04 LOG7[3932:3664]: https started 2007.04.25 18:19:04 LOG7[3932:3664]: FD 224 in non-blocking mode 2007.04.25 18:19:04 LOG7[3932:3664]: TCP_NODELAY option set on local socket 2007.04.25 18:19:04 LOG5[3932:3664]: https accepted connection from 127.0.0.1:1249 2007.04.25 18:19:04 LOG7[3932:3664]: FD 248 in non-blocking mode 2007.04.25 18:19:04 LOG7[3932:3664]: https connecting 127.0.0.1:1935 2007.04.25 18:19:04 LOG7[3932:3664]: connect_wait: waiting 10 seconds 2007.04.25 18:19:04 LOG7[3932:3664]: connect_wait: connected 2007.04.25 18:19:04 LOG5[3932:3664]: https connected remote server from 127.0.0.1:1250 2007.04.25 18:19:04 LOG7[3932:3664]: Remote FD=248 initialized 2007.04.25 18:19:04 LOG7[3932:3664]: TCP_NODELAY option set on remote socket 2007.04.25 18:19:04 LOG7[3932:3664]: SSL state (connect): before/connect initialization 2007.04.25 18:19:04 LOG7[3932:3664]: SSL state (connect): SSLv3 write client hello A 2007.04.25 18:24:04 LOG6[3932:3664]: init_ssl: s_poll_wait timeout 2007.04.25 18:24:04 LOG5[3932:3664]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.04.25 18:24:04 LOG7[3932:3664]: https finished (0 left) The stunnel.conf file has the following settings that pertain specifically to this situation client = yes [https] accept = 443 connect = 1935 What I seem to see (according to the logfile) is that an ssl connection is successfully established but no subsequent communication takes place after the connection has been made. At this point my Flash application doesn't send any messages via the ssl connection which seems to implicate my client as being the source of my problem. I would appreciate any advice on how I can best investigate this whole situation to resolve the issue. Regards, David Schulberg email: davids(a)evertech.com.au

2 2

firewall very restricted!!
by Pitoniso Rikito Rikin 17 Apr '07

17 Apr '07

Ok guys look this... my only contact with the world is trought the WEB port 80 how i can establish a ssh connection trought this port, the only method avaible is the GET or POST.... well how i do this... help --------------------------------- LLama Gratis a cualquier PC del Mundo. Llamadas a fijos y móviles desde 1 céntimo por minuto. http://es.voice.yahoo.com

2 1

Using Client Authentication
by Ravi Gowda 16 Apr '07

16 Apr '07

Hi All, I am trying to have a setup where stunnel acts as a client to a server which requires client-Authentication. This is the snapshot of my stunnel.conf # Sample stunnel configuration file # Copyright by Michal Trojnara 2002 setuid = nobody setgid = nobody output = /etc/stunnel/out cert = /etc/stunnel/rtca-client.pem key = /etc/stunnel/rtca-client.ky # Authentication stuff verify = 2 # don't forget about c_rehash CApath # it is located inside chroot jail: #CApath = /certs # or simply use CAfile instead: CAfile = /etc/stunnel/rtca.pem ciphers = DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:AES256-SHA:EDH-RSA-DES-CBC3-SHA:EDH-DSS-DES-CBC3-SHA:DES-CBC3-SHA:DES-CBC3-MD5:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:AES128-SHA:IDEA-CBC-SHA:IDEA-CBC-MD5:RC2-CBC-MD5:DHE-DSS-RC4-SHA:RC4-SHA:RC4-MD5:RC4-MD5:RC4-64-MD5:EXP1024-DHE-DSS-DES-CBC-SHA:EXP1024-DES-CBC-SHA:EXP1024-RC2-CBC-MD5:EDH-RSA-DES-CBC-SHA:EDH-DSS-DES-CBC-SHA:DES-CBC-SHA:DES-CBC-MD5:EXP1024-DHE-DSS-RC4-SHA:EXP1024-RC4-SHA:EXP1024-RC4-MD5:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC2-CBC-MD5:EXP-RC4-MD5:EXP-RC4-MD5 # Some debugging stuff debug = 7 output = /etc/stunnel/stunnel.log # Use it for client mode client = yes when I try to connect to the server, I am seeing that Stunnel is sending an empty certificate..which is making my server to reject connections. Can someone please help me out?? Thanks in Advance Ravi Gowda

1 0

Re: [stunnel-users] Setting up chain certificates on Stunnel.
by Hans Werner Strube 13 Apr '07

13 Apr '07

Satyajit Das wrote: > My server certificate > signed by intermediate CA > signed by Verisign CA > > I have the Verisign certificate on my clients trusted root CAs, however I am > > not able to get the SSL communication through. I believe this is because > stunnel should send all the three certificates for authentication and I > couldnt > configure stunnel to send across all the three certificates. > > Can anybody please help install all these certificates on stunnel. Simply concatenate the certificates (in PEM format) in the file specified by "cert = ..." and supply the key of your server certificate either in the same file or in the file specified by "key = ...".

1 0

stunnel-4.20 crash on AIX
by Peter O'Gorman 12 Apr '07

12 Apr '07

Hi, We built stunnel-4.20 on solaris, hpux, aix, tru64. irix and various linux hosts, and it works fine everywhere except hpux10.20 and aix. stunnel crashes with similar backtraces on AIX-4.3,5.1,5.2 and 5.3, not on the first client connect (using stunnel client=yes, connecting to s secure daytime server on another host, because everyone needs a secure daytime server :-p) but on the second connection. We have not tried server side yet, I assume results are similar. The backtrace looks like this: GDB: Program terminated with signal 11, Segmentation fault. #0 0xd0126b1c in _sigsetmask () from /usr/lib/libpthreads.a(shr_xpg5.o) (gdb) bt #0 0xd0126b1c in _sigsetmask () from /usr/lib/libpthreads.a(shr_xpg5.o) #1 0xd0127e5c in _p_sigaction () from /usr/lib/libpthreads.a(shr_xpg5.o) #2 0xd0315544 in sigaction () from /usr/lib/libc.a(shr.o) #3 0xd038beac in signal () from /usr/lib/libc.a(shr.o) #4 0x10006200 in sigchld_handler (sig=0) at network.c:350 #5 0x00004378 in ?? () Previous frame inner to this frame (corrupt stack?) dbx: sigchld_handler(sig = 0), line 350 in "network.c" _sigsetmask(??, ??, ??) at 0xd0126b1c _p_sigaction(??, ??, ??) at 0xd0127e58 raise.sigaction(??, ??, ??) at 0xd0315540 signal(??, ??) at 0xd038bea8 sigchld_handler(sig = 0), line 350 in "network.c" _sigsetmask(??, ??, ??) at 0xd0126b1c _p_sigaction(??, ??, ??) at 0xd0127e58 raise.sigaction(??, ??, ??) at 0xd0315540 signal(??, ??) at 0xd038bea8 sigchld_handler(sig = 0), line 350 in "network.c" _sigsetmask(??, ??, ??) at 0xd0126b1c _p_sigaction(??, ??, ??) at 0xd0127e58 raise.sigaction(??, ??, ??) at 0xd0315540 signal(??, ??) at 0xd038bea8 repeated forever. Line 350 of network.c says: signal(SIGCHLD, sigchld_handler); And that is in the signal handler, it seems like a normal thing to do, and I have no idea why, on AIX, it crashes. putting an #ifndef _AIX #endif around the signal() call "fixes" the crash, alternatively setting SIGCHLD to SIG_IGN on AIX "fixes" it, but I don't think that either solution is correct. I don't believe the signal handler will get called again as we do not reset the signal. (tests that assumtion and finds answer to riddle) Okay, problem identified. The signal_handler is being called repeatedly, causing an infinite loop that can only end in a crash. According to the AIX signal man page: The signal in libc.a does not set the SA_RESTART flag. It sets the signal mask to the signal whose action is being specified, and sets flags to SA_OLDSTYLE. The Berkeley Software Distribution (BSD) version of signal sets the SA_RESTART flag and preserves the current settings of the signal mask and flags. The BSD version can be used by compiling with the Berkeley Compatibility Library (libbsd.a). And indeed, no patches are required if I add -lbsd. Another solution would probably be to use sigaction if it is available. Meanwhile, please find attached a patch to add -lbsd on aix. Thanks for bearing with me while I figured this out :-) Peter

1 0

Setting up chain certificates on Stunnel.
by Satyajit Das 12 Apr '07

12 Apr '07

Hi , I am using stunnel as a wrapper to provide SSL functionalities for my server. Right now I am having problems setting up chained certificates on stunnel. My Problem -> My server certificate > signed by intermediate CA > signed by Verisign CA I have the Verisign certificate on my clients trusted root CAs, however I am not able to get the SSL communication through. I believe this is because stunnel should send all the three certificates for authentication and I couldnt configure stunnel to send across all the three certificates. Can anybody please help install all these certificates on stunnel. Thanks in advance, Satyajit

1 0

Cannot install stunnel as a service on Vista
by Neil Aggarwal 12 Apr '07

12 Apr '07

Hello: I cannot install stunnel as a service on Vista. I get a permission denied error. Is there a way to work around it? Thanks, Neil -- Neil Aggarwal, (214)986-3533, www.JAMMConsulting.com FREE! Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details.

2 1

forcing checking of local certificates every time
by san san 11 Apr '07

11 Apr '07

Hi, I am using stunnel with verify option with value 3. In value 3 the authentication is carried out using the local trusted certificates. I think stunnel does not check the local trusted certificates directory each and every time. If the connection has already been established then it does not check local trusted certificates , connection can be established using the certificates in cache. Is it possible to force to check the local trusted certificates every time. Regards

2 1

stunnel work with NAT
by atsushi kataoka 11 Apr '07

11 Apr '07

I have one question , does stunnel work with NAT ? I will explain the architecture There are some 10.0.0.XXXX machines and some are 192.0.0.XXXX machines. They are connected to each other via Router which does NAT. My VNC servers are installed on 10.0.0.XXXX and vnc clients on 192.0.0.XXXX I am not able to do the vnc from client to server. Now I want to encrypt the VNC traffic , can stunnel work with NAT? A Kataoka

1 0

running concurrent stunnel instances
by John Taylor 10 Apr '07

10 Apr '07

Greetings, I am running rsync through stunnel 4.20. Each end is a Dell dual cpu, dual core Xeon (each core with hyper-threading) 8 gigs of memory, running Win 2003 Server. The disks are 10K RPM Ultra-320 drives that use hardware raid-5. Right now, I have anywhere between 5 and 8 Scheduled Tasks running at the same time. The reason for this is that the backups need to run in parallel in order to finish within the 15 hour time window. Although I am not certain about an exact number, I believe I would be transferring about 300-400 gig of data each time. Even though I have a gigabit connection between the two servers, I am only seeing 5-6% network utilization. When running the same rsync batch file without stunnel encryption, the throughput was much higher. I would like to see about increasing my throughput with stunnel encryption running. I don't expect it to be as fast as running without stunnel, but I still think I should be able to do better than 5-6% throughput. I am also running a enhanced version of rsync that does not have any issues with NTFS disk fragmentation, since it preallocates the files to the final size before writing. I think the bottleneck is the CPU. To test out this theory, I would like to have multiple copies of the stunnel.exe running, each using their own config file and own port numbers. I don't think the problem is with rsync because it spawns a new process for each connection. Thus, the multiple rsync.exe processes get the advantage of running on top of multiple cores. This is not the case with stunnel.exe. It only uses 1 process, but 8 threads. I am hoping that multiple stunnel.exe instances will fix the bottleneck because each stunnel.exe process could then be running on it's own core. How can I accomplish this? Also, what is the fastest encryption cipher that stills has good security, over 64 bit, preferably at least 128 bit. Any help would be greatly appreciated. Thanks, -John Stunnel.conf on server: cert = my.pem verify = 3 CAfile = my.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 taskbar=no debug = 5 output = stunnel.log [rsynctnl] accept=12345 connect=873 ciphers = AES128-SHA Stunnel.conf on client: cert = my.pem taskbar = no socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 5 output = stunnel.log client = yes [rsynctnl] accept=12345 connect=10.9.8.7:12345 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

3 2

stunnel as ssh client and self signed certificates
by san san 07 Apr '07

07 Apr '07

Hi, I was planning to use stunnel for my rdp based product. I have several trivial doubts,but since i would be using the same in my product. I would like to know following 1.Actually i want to use stunnel in the same way as ssh i.e Client authentication only , i don't want server authentication at all in my client. So it is possible to not check any server certificate from client side. If i will be using client certificate 2.Is it possible to use self-signed certificate ? I am aware of the drawbacks of using self-signed certificates but because of some inevitable reason i have to use self-signed certificates. I am sorry for my poor knowledge. Regards

1 0

Is it possible to see the "real" IP of the client?
by Konrad Hammerer 05 Apr '07

05 Apr '07

Hi! I want to use STunnel to secure my IMAP connections to my mail server. It works fine but from now on the mail server shows 127.0.0.1 for the open imap client connections. Is there a way to get STunnel forward the real IP or is this impossible? Thanks, Konrad

2 1

How to generate my own certificate for my dynamic dns
by Konrad Hammerer 05 Apr '07

05 Apr '07

Hi! I read somewere, that it is possible to generate a certificate for STunnel. The certificate shipped with the stunnel installer is just for testing purpose, isn't it? So were can I get my own, secure certificate? Thanks, Konrad

2 1

User nobody logging in
by Dimitri Yioulos 29 Mar '07

29 Mar '07

Hi, folks. I've been using stunnel on our mail server (sendmail, spamassassin, clamav, mailscanner, mailwatch). I note the following being written to syslog, and wonder if stunnel is causing it: Mar 29 14:07:31 mail1 su(pam_unix)[29493]: session closed for user nobody Mar 29 14:08:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s accepted connection from 192.168.100.58:1723 Mar 29 14:08:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s connected remote server from 127.0.0.1:33540 Mar 29 14:08:00 mail1 stunnel: LOG5[15993:3076422576]: Connection closed: 138 bytes sent to SSL, 42 bytes sent to socket Mar 29 14:08:43 mail1 su(pam_unix)[29640]: session opened for user nobody by (uid=0) Mar 29 14:08:43 mail1 su(pam_unix)[29640]: session closed for user nobody Mar 29 14:09:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s accepted connection from 192.168.100.58:1724 Mar 29 14:09:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s connected remote server from 127.0.0.1:33544 Mar 29 14:09:00 mail1 stunnel: LOG5[15993:3076422576]: Connection closed: 138 bytes sent to SSL, 42 bytes sent to socket Mar 29 14:10:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s accepted connection from 192.168.100.58:1725 Mar 29 14:10:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s connected remote server from 127.0.0.1:33546 Mar 29 14:10:00 mail1 stunnel: LOG5[15993:3076422576]: Connection closed: 138 bytes sent to SSL, 42 bytes sent to socket Mar 29 14:10:11 mail1 su(pam_unix)[30025]: session opened for user nobody by (uid=0) Mar 29 14:10:11 mail1 su(pam_unix)[30025]: session closed for user nobody Mar 29 14:10:33 mail1 su(pam_unix)[30075]: session opened for user nobody by (uid=0) Mar 29 14:10:33 mail1 su(pam_unix)[30075]: session closed for user nobody Mar 29 14:11:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s accepted connection from 192.168.100.58:1726 Mar 29 14:11:00 mail1 stunnel: LOG5[15993:3076422576]: pop3s connected remote server from 127.0.0.1:33559 Mar 29 14:11:00 mail1 stunnel: LOG5[15993:3076422576]: Connection closed: 138 bytes sent to SSL, 42 bytes sent to socket Mar 29 14:11:03 mail1 su(pam_unix)[30206]: session opened for user nobody by (uid=0) Mar 29 14:11:03 mail1 su(pam_unix)[30206]: session closed for user nobody Mar 29 14:11:06 mail1 su(pam_unix)[30215]: session opened for user nobody by (uid=0) Mar 29 14:11:06 mail1 su(pam_unix)[30215]: session closed for user nobody It's the sessions opened and closed for the user nobody that has me concerned. stunnel appears to be the only process being run by the user nobody. If, in fact, this is caused by stunnel, do I keep these (and only these) session opened/closed instances from being logged? Thanks. Dimitri -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

1 0

trouble shooting Pan issue
by eph man 29 Mar '07

29 Mar '07

hi, i'm trying to trouble shoot a problem with a newsreader called pan that i might be having. here's my setup: ubuntu 6.10 kernel 2.6.17 pan 0.14.2 stunnel4 4.150 i created a snntp.conf file with only: client = yes foreground = yes debug = 7 [nntps] accept = localhost:2000 connect = inetnews.worldnet.att.net:563 then i run stunnel4 and this is the output: ephman@wintermute:~$ sudo stunnel4 /etc/stunnel/snntp.conf 2007.03.29 13:54:47 LOG7[13414:3083015856]: RAND_status claims sufficient entropy for the PRNG 2007.03.29 13:54:47 LOG6[13414:3083015856]: PRNG seeded successfully 2007.03.29 13:54:47 LOG7[13414:3083015856]: SSL context initialized for service nntps 2007.03.29 13:54:47 LOG5[13414:3083015856]: stunnel 4.15 on i486-pc-linux-gnu with OpenSSL 0.9.8b 04 May 2006 2007.03.29 13:54:47 LOG5[13414:3083015856]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2007.03.29 13:54:47 LOG6[13414:3083015856]: file ulimit = 1024 (can be changed with 'ulimit -n') 2007.03.29 13:54:47 LOG6[13414:3083015856]: poll() used - no FD_SETSIZE limit for file descriptors 2007.03.29 13:54:47 LOG5[13414:3083015856]: 500 clients allowed 2007.03.29 13:54:47 LOG7[13414:3083015856]: FD 3 in non-blocking mode 2007.03.29 13:54:47 LOG7[13414:3083015856]: FD 4 in non-blocking mode 2007.03.29 13:54:47 LOG7[13414:3083015856]: FD 5 in non-blocking mode 2007.03.29 13:54:47 LOG7[13414:3083015856]: SO_REUSEADDR option set on accept socket 2007.03.29 13:54:47 LOG7[13414:3083015856]: nntps bound to 127.0.0.1:2000 2007.03.29 13:54:47 LOG7[13414:3083015856]: Created pid file /var/run/stunnel4.pid i then startup pan and it won't connect to the server the log file says: Thu, 29 Mar 2007 13:58:15 - Pan 0.14.2.91 Started Thu, 29 Mar 2007 13:58:15 - Directory "/home/ephman/.pan/messages/cache" contains 0.0 MB in 0 files Thu, 29 Mar 2007 13:58:15 - Directory "/home/ephman/.pan/messages/folders/pan.sent" contains 0.0 MB in 0 files Thu, 29 Mar 2007 13:58:15 - Directory "/home/ephman/.pan/messages/folders/pan.sendlater" contains 0.0 MB in 0 files Thu, 29 Mar 2007 13:58:15 - News server connection count: 0 Thu, 29 Mar 2007 13:58:19 - New connection 0x846da08 for inetnews.worldnet.att.net, port 563 Thu, 29 Mar 2007 13:59:21 - NNTP handshake failed: Error reading from socket. Thu, 29 Mar 2007 13:59:21 - Handshake failed: Error reading from socket. Thu, 29 Mar 2007 13:59:26 - New connection 0x84a5850 for inetnews.worldnet.att.net, port 563 any help or hints would be really helpful. thanks. be well, ephman

1 0

Simple Stunnel Question
by mdpeters 28 Mar '07

28 Mar '07

My goal is to have a web server transfer MySQL data via an AES tunnel to a MySQL database server with an added encryption card. Both systems have the same SSL and Stunnel software installed. My web servers database seems to be functioning as normal. I would like to verify that what I have is complete and effective. It is not apparent to me if I have finished construction or how to verify this works like I want it to. I'm not sure how I would verify that Stunnel is being used? Do I need to run Stunnel as a background service full time? Is there something I am missing here? Comments and advice is appreciated! ++++++ # /usr/local/sbin/stunnel -version stunnel 4.20 on sparc-sun-solaris2.10 with OpenSSL 0.9.8e 23 Feb 2007 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 Global options debug = 5 pid = /usr/local/var/run/stunnel/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /usr/local/etc/stunnel/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /usr/local/etc/stunnel/stunnel.pem session = 300 seconds sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none # gcc -v Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.10/3.3.2/specs Configured with: ../configure --with-as=/usr/ccs/bin/as --with-ld=/usr/ccs/bin/ld --disable-nls Thread model: posix gcc version 3.3.2 # uname -a SunOS slinky 5.10 Generic_118833-17 sun4u sparc SUNW,Ultra-80 # /usr/local/sbin/stunnel -sockets 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 -- -- -- 65535 SO_SNDBUF -- -- -- 65535 SO_RCVLOWAT -- -- -- -- SO_SNDLOWAT -- -- -- -- SO_RCVTIMEO -- -- -- -- SO_SNDTIMEO -- -- -- -- SO_REUSEADDR 1 -- -- 0 IP_TOS -- -- -- 0 IP_TTL -- -- -- 64 TCP_NODELAY -- -- -- 0 # openssl ciphers -v DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 DHE-DSS-AES256-SHA SSLv3 Kx=DH Au=DSS Enc=AES(256) Mac=SHA1 AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 EDH-RSA-DES-CBC3-SHA SSLv3 Kx=DH Au=RSA Enc=3DES(168) Mac=SHA1 EDH-DSS-DES-CBC3-SHA SSLv3 Kx=DH Au=DSS Enc=3DES(168) Mac=SHA1 DES-CBC3-SHA SSLv3 Kx=RSA Au=RSA Enc=3DES(168) Mac=SHA1 DES-CBC3-MD5 SSLv2 Kx=RSA Au=RSA Enc=3DES(168) Mac=MD5 DHE-RSA-AES128-SHA SSLv3 Kx=DH Au=RSA Enc=AES(128) Mac=SHA1 DHE-DSS-AES128-SHA SSLv3 Kx=DH Au=DSS Enc=AES(128) Mac=SHA1 AES128-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(128) Mac=SHA1 IDEA-CBC-SHA SSLv3 Kx=RSA Au=RSA Enc=IDEA(128) Mac=SHA1 IDEA-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=IDEA(128) Mac=MD5 RC2-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=RC2(128) Mac=MD5 RC4-SHA SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=SHA1 RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 RC4-MD5 SSLv2 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 EDH-RSA-DES-CBC-SHA SSLv3 Kx=DH Au=RSA Enc=DES(56) Mac=SHA1 EDH-DSS-DES-CBC-SHA SSLv3 Kx=DH Au=DSS Enc=DES(56) Mac=SHA1 DES-CBC-SHA SSLv3 Kx=RSA Au=RSA Enc=DES(56) Mac=SHA1 DES-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=DES(56) Mac=MD5 EXP-EDH-RSA-DES-CBC-SHA SSLv3 Kx=DH(512) Au=RSA Enc=DES(40) Mac=SHA1 export EXP-EDH-DSS-DES-CBC-SHA SSLv3 Kx=DH(512) Au=DSS Enc=DES(40) Mac=SHA1 export EXP-DES-CBC-SHA SSLv3 Kx=RSA(512) Au=RSA Enc=DES(40) Mac=SHA1 export EXP-RC2-CBC-MD5 SSLv3 Kx=RSA(512) Au=RSA Enc=RC2(40) Mac=MD5 export EXP-RC2-CBC-MD5 SSLv2 Kx=RSA(512) Au=RSA Enc=RC2(40) Mac=MD5 export EXP-RC4-MD5 SSLv3 Kx=RSA(512) Au=RSA Enc=RC4(40) Mac=MD5 export EXP-RC4-MD5 SSLv2 Kx=RSA(512) Au=RSA Enc=RC4(40) Mac=MD5 export ++++++

1 0

Stunnel support or OpenSSL in FIPS mode
by George Henson 26 Mar '07

26 Mar '07

All, Are there any current plans to include FIPS complaint mode in stunnel? I have asked some of my peers on other US Government projects and they indicated this would be a help to them as well. Looking at the users guide from the OpenSSL site (http://www.openssl.org/docs/fips/UserGuide-1.1.1.pdf) it would not appear to be a great amount of effort to make a stunnel that functions in a FIPS complaint mode. Attached I have included the patch I have created (with some help from friends). It does not do the final linking correctly as I am not very good with autmake. Please let me know what you think. Thank you George diff -u -r @stunnel-4.20/configure.ac stunnel-4.20/configure.ac --- @stunnel-4.20/configure.ac 2006-11-11 09:58:01.000000000 -0500 +++ stunnel-4.20/configure.ac 2007-03-26 18:35:09.000000000 -0400 @@ -260,6 +260,51 @@ CFLAGS="$CFLAGS -I$ssldir/include" LIBS="$LIBS -L$ssldir/lib -lssl -lcrypto" +AC_ARG_WITH(fips, + [ --with-fips Enable OpenSSL FIPS mode], + [ + if test "x$withval" != "xno" ; then + INCLUDES="=l$ssldir/include" + AC_CACHE_CHECK([for FIPS mode], ac_cv_fips, [ + AC_TRY_COMPILE( + [ #include <openssl/fips.h> ], + [ FIPS_mode_set(1); ], + [ ac_cv_fips="yes" ], + [ ac_cv_fips="no" ] + ) + ]) + fi + ] +) +if test "x$ac_cv_fips" = "xyes" ; then + CPPFLAGS="$CPPFLAGS -DOPENSSL_FIPS" + FIPS_MODE=yes + AC_SUBST(FIPS_MODE) +fi + +AC_ARG_WITH(fips, + [ --with-fips Enable OpenSSL FIPS mode], + [ + if test "x$withval" != "xno" ; then + INCLUDES="=l$ssldir/include" + AC_CACHE_CHECK([for FIPS mode], ac_cv_fips, [ + AC_TRY_COMPILE( + [ #include <openssl/fips.h> ], + [ FIPS_mode_set(1); ], + [ ac_cv_fips="yes" ], + [ ac_cv_fips="no" ] + ) + ]) + fi + ] +) +if test "x$ac_cv_fips" = "xyes" ; then + CPPFLAGS="$CPPFLAGS -DOPENSSL_FIPS" + FIPS_MODE=yes + AC_SUBST(FIPS_MODE) +fi +AM_CONDITIONAL(FIPS_MODE, test x$ac_cv_fips = xyes) + # Check for obsolete RSAref library AC_MSG_CHECKING([for obsolete RSAref library]) saved_LIBS="$LIBS" Only in stunnel-4.20: configure.ac.orig diff -u -r @stunnel-4.20/src/common.h stunnel-4.20/src/common.h --- @stunnel-4.20/src/common.h 2006-11-17 04:03:18.000000000 -0500 +++ stunnel-4.20/src/common.h 2007-03-26 18:35:03.000000000 -0400 @@ -321,6 +321,9 @@ #if SSLEAY_VERSION_NUMBER >= 0x00907000L #include <openssl/ocsp.h> #endif /* OpenSSL-0.9.7 */ +#ifdef OPENSSL_FIPS +#include <openssl/fips.h> +#endif #else /* HAVE_OPENSSL */ #include <lhash.h> #include <ssl.h> diff -u -r @stunnel-4.20/src/options.c stunnel-4.20/src/options.c --- @stunnel-4.20/src/options.c 2006-11-05 08:04:37.000000000 -0500 +++ stunnel-4.20/src/options.c 2007-03-26 18:35:03.000000000 -0400 @@ -556,7 +556,11 @@ /* ciphers */ switch(cmd) { case CMD_INIT: +#ifndef OPENSSL_FIPS section->cipher_list=SSL_DEFAULT_CIPHER_LIST; +#else + section->cipher_list="!ADH:!RC4:!RC2:!IDEA:!MD5:!NULL:TLSv1"; +#endif break; case CMD_EXEC: if(strcasecmp(opt, "ciphers")) @@ -564,7 +568,11 @@ section->cipher_list=stralloc(arg); return NULL; /* OK */ case CMD_DEFAULT: +#ifndef OPENSSL_FIPS log_raw("%-15s = %s", "ciphers", SSL_DEFAULT_CIPHER_LIST); +#else + log_raw("%-15s = %s", "ciphers", "!ADH:!RC4:!RC2:!IDEA:!MD5:!NULL:TLSv1"); +#endif break; case CMD_HELP: log_raw("%-15s = list of permitted SSL ciphers", "ciphers"); @@ -726,6 +734,31 @@ } #endif + /* fips mode */ +#ifndef USE_WIN32 + switch(cmd) { + case CMD_INIT: + options.option.fips_mode=0; + break; + case CMD_EXEC: + if(strcasecmp(opt, "fips")) + break; + if(!strcasecmp(arg, "yes")) + options.option.fips_mode = 1; + else if(!strcasecmp(arg, "no")) + options.option.fips_mode = 0; + else + return "argument should be either 'yes' or 'no'"; + return NULL; /* OK */ + case CMD_DEFAULT: + break; + case CMD_HELP: + log_raw("%-15s = yes|no FIPS mode", + "fips"); + break; + } +#endif + /* execargs */ #ifndef USE_WIN32 switch(cmd) { diff -u -r @stunnel-4.20/src/prototypes.h stunnel-4.20/src/prototypes.h --- @stunnel-4.20/src/prototypes.h 2006-11-11 08:03:05.000000000 -0500 +++ stunnel-4.20/src/prototypes.h 2007-03-26 18:35:03.000000000 -0400 @@ -142,6 +142,7 @@ unsigned int foreground:1; unsigned int syslog:1; /* log to syslog */ unsigned int rand_write:1; /* overwrite rand_file */ + unsigned int fips_mode:1; #ifdef USE_WIN32 unsigned int taskbar:1; /* enable the taskbar icon */ #endif diff -u -r @stunnel-4.20/src/stunnel.c stunnel-4.20/src/stunnel.c --- @stunnel-4.20/src/stunnel.c 2006-11-30 15:47:45.000000000 -0500 +++ stunnel-4.20/src/stunnel.c 2007-03-26 18:35:03.000000000 -0400 @@ -59,6 +59,7 @@ #ifndef USE_WIN32 int main(int argc, char* argv[]) { /* execution begins here 8-) */ +unsigned long e; main_initialize(argc>1 ? argv[1] : NULL, argc>2 ? argv[2] : NULL); signal(SIGPIPE, SIG_IGN); /* avoid 'broken pipe' signal */ @@ -72,6 +73,21 @@ signal(SIGHUP, signal_handler); /* signal(SIGSEGV, signal_handler); */ +#ifdef OPENSSL_FIPS + if(options.option.fips_mode) { + if (!FIPS_mode_set(1)) { + log_raw("Failed to enter FIPS mode"); + ERR_load_crypto_strings(); + while((e = ERR_get_error())) { + log_raw(ERR_error_string(e,NULL)); + } + return 1; /* failure */ + } else { + log_raw("FIPS mode enabled"); + } + } +#endif + main_execute(); return 0; /* success */

1 0

using an ocsp
by Samuel Landau 26 Mar '07

26 Mar '07

Hello, I am using stunnel 4.18 and openca-ocspd 1.5.1. The OCSPd uses a delegate certificate and the setup works when tested with openssl: $ openssl ocsp -issuer /home/landau/ssl/cacert.pem -serial 3 -url http://localhost:2560 -CAfile /home/landau/ssl/cacert.pem Response verify OK 3: good This Update: Mar 23 18:27:37 2007 GMT Next Update: Mar 26 10:56:33 2007 GMT But when it comes to using stunnel, I cannot figure out how to make it use properly the OCSP. I could see that stunnel 4.19 had more options for ocsp, but I am unsure this is related to my current issue. Besides, is there a way to have stunnel fall back on local cert/crl files if the ocsp server is not available ? Regards, -- Samuel Landau ____________________________________________________________________________ This email and any files transmitted with it are confidential and are intended solely for the use of the individual or entity to which they are addressed. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. E-mail messages are not necessarily secure. Archos does not accept responsibility for any changes made to this message after it was sent. 2007.03.26 12:59:05 LOG5[29250:3083020512]: stunnel 4.18 on i486-pc-linux-gnu with OpenSSL 0.9.8c 05 Sep 2006 2007.03.26 12:59:05 LOG5[29250:3083020512]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2007.03.26 12:59:05 LOG6[29250:3083020512]: file ulimit = 1024 (can be changed with 'ulimit -n') 2007.03.26 12:59:05 LOG6[29250:3083020512]: poll() used - no FD_SETSIZE limit for file descriptors 2007.03.26 12:59:05 LOG5[29250:3083020512]: 500 clients allowed 2007.03.26 12:59:05 LOG7[29250:3083020512]: FD 4 in non-blocking mode 2007.03.26 12:59:05 LOG7[29250:3083020512]: FD 5 in non-blocking mode 2007.03.26 12:59:05 LOG7[29250:3083020512]: FD 6 in non-blocking mode 2007.03.26 12:59:05 LOG7[29250:3083020512]: SO_REUSEADDR option set on accept socket 2007.03.26 12:59:05 LOG7[29250:3083020512]: server bound to 127.0.0.1:12345 2007.03.26 12:59:05 LOG7[29250:3083020512]: Created pid file /home/landau/stunnel4.pid 2007.03.26 12:59:12 LOG7[29250:3083020512]: server accepted FD=7 from 127.0.0.1:36200 2007.03.26 12:59:12 LOG7[29250:3082972080]: server started 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 7 in non-blocking mode 2007.03.26 12:59:12 LOG7[29250:3082972080]: TCP_NODELAY option set on local socket 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 8 in non-blocking mode 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 9 in non-blocking mode 2007.03.26 12:59:12 LOG7[29250:3083020512]: Cleaning up the signal pipe 2007.03.26 12:59:12 LOG6[29250:3083020512]: Child process 29252 finished with code 0 2007.03.26 12:59:12 LOG7[29250:3082972080]: Connection from 127.0.0.1:36200 permitted by libwrap 2007.03.26 12:59:12 LOG5[29250:3082972080]: server connected from 127.0.0.1:36200 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): before/accept initialization 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): SSLv3 read client hello A 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): SSLv3 write server hello A 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): SSLv3 write certificate A 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): SSLv3 write certificate request A 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL state (accept): SSLv3 flush data 2007.03.26 12:59:12 LOG6[29250:3082972080]: *** starting OCSP verification *** 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 8 in non-blocking mode 2007.03.26 12:59:12 LOG7[29250:3082972080]: connect_wait: waiting 10 seconds 2007.03.26 12:59:12 LOG7[29250:3082972080]: connect_wait: connected 2007.03.26 12:59:12 LOG7[29250:3082972080]: OCSP server connected 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 8 in blocking mode 2007.03.26 12:59:12 LOG7[29250:3082972080]: FD 8 in non-blocking mode 2007.03.26 12:59:12 LOG6[29250:3082972080]: OCSP response received 2007.03.26 12:59:12 LOG3[29250:3082972080]: OCSP_basic_verify: 27069076: error:27069076:OCSP routines:OCSP_basic_verify:signer certificate not found 2007.03.26 12:59:12 LOG7[29250:3082972080]: SSL alert (write): fatal: certificate unknown 2007.03.26 12:59:12 LOG3[29250:3082972080]: SSL_accept: 140890B2: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned 2007.03.26 12:59:12 LOG5[29250:3082972080]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.03.26 12:59:12 LOG7[29250:3082972080]: server finished (0 left) 2007.03.26 12:59:16 LOG3[29250:3083020512]: Received signal 2; terminating 2007.03.26 12:59:16 LOG7[29250:3083020512]: removing pid file /home/landau/stunnel4.pid cert = landau.pem key = landau.key sslVersion = SSLv3 pid =/home/landau/ssl/stunnel4.pid socket =l:TCP_NODELAY=1 socket =r:TCP_NODELAY=1 compression =zlib foreground =yes verify =3 CApath =/home/landau/ssl/ CAfile =/home/landau/ssl/cacert.pem debug =7 output =/home/landau/ssl/stunnel4.log client =no [server] accept =localhost:12345 ocsp =http://localhost:2560 pty =no exec =/bin/bash execargs =bash

1 0

[win32] stunnel/OpenSSL/Synergy howto
by P. Jansen 25 Mar '07

25 Mar '07

Hi stunnel users and especially newbies, on http://stunnel.mirt.net/docs.html you can find a link to a stunnel/OpenSSL/Synergy howto for the Win32 platform. It is a short but hopefully useful doc how to install, configure and use stunnel. Feedback and comments are welcome. - Patrick

1 0

Solaris 10 and MySQL questions
by mdpeters 25 Mar '07

25 Mar '07

My goal is to have a web server transfer MySQL data via an AES tunnel to a MySQL database server with an added encryption card. Both systems have the same SSL and Stunnel software installed. My web servers database seems to be functioning as normal. I would like to verify that what I have is complete and effective. It is not apparent to me if I have finished construction or how to verify this works like I want it to. I'm not sure how I would verify that Stunnel is being used. Do I need to run Stunnel as a background service full time? Is there something I am missing here? ++++++ # /usr/local/sbin/stunnel -version stunnel 4.20 on sparc-sun-solaris2.10 with OpenSSL 0.9.8e 23 Feb 2007 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 Global options debug = 5 pid = /usr/local/var/run/stunnel/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /usr/local/etc/stunnel/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /usr/local/etc/stunnel/stunnel.pem session = 300 seconds sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none # gcc -v Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.10/3.3.2/specs Configured with: ../configure --with-as=/usr/ccs/bin/as --with-ld=/usr/ccs/bin/ld --disable-nls Thread model: posix gcc version 3.3.2 # uname -a SunOS slinky 5.10 Generic_118833-17 sun4u sparc SUNW,Ultra-80 # /usr/local/sbin/stunnel -sockets 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 -- -- -- 65535 SO_SNDBUF -- -- -- 65535 SO_RCVLOWAT -- -- -- -- SO_SNDLOWAT -- -- -- -- SO_RCVTIMEO -- -- -- -- SO_SNDTIMEO -- -- -- -- SO_REUSEADDR 1 -- -- 0 IP_TOS -- -- -- 0 IP_TTL -- -- -- 64 TCP_NODELAY -- -- -- 0 # openssl ciphers -v DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 DHE-DSS-AES256-SHA SSLv3 Kx=DH Au=DSS Enc=AES(256) Mac=SHA1 AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 EDH-RSA-DES-CBC3-SHA SSLv3 Kx=DH Au=RSA Enc=3DES(168) Mac=SHA1 EDH-DSS-DES-CBC3-SHA SSLv3 Kx=DH Au=DSS Enc=3DES(168) Mac=SHA1 DES-CBC3-SHA SSLv3 Kx=RSA Au=RSA Enc=3DES(168) Mac=SHA1 DES-CBC3-MD5 SSLv2 Kx=RSA Au=RSA Enc=3DES(168) Mac=MD5 DHE-RSA-AES128-SHA SSLv3 Kx=DH Au=RSA Enc=AES(128) Mac=SHA1 DHE-DSS-AES128-SHA SSLv3 Kx=DH Au=DSS Enc=AES(128) Mac=SHA1 AES128-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(128) Mac=SHA1 IDEA-CBC-SHA SSLv3 Kx=RSA Au=RSA Enc=IDEA(128) Mac=SHA1 IDEA-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=IDEA(128) Mac=MD5 RC2-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=RC2(128) Mac=MD5 RC4-SHA SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=SHA1 RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 RC4-MD5 SSLv2 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 EDH-RSA-DES-CBC-SHA SSLv3 Kx=DH Au=RSA Enc=DES(56) Mac=SHA1 EDH-DSS-DES-CBC-SHA SSLv3 Kx=DH Au=DSS Enc=DES(56) Mac=SHA1 DES-CBC-SHA SSLv3 Kx=RSA Au=RSA Enc=DES(56) Mac=SHA1 DES-CBC-MD5 SSLv2 Kx=RSA Au=RSA Enc=DES(56) Mac=MD5 EXP-EDH-RSA-DES-CBC-SHA SSLv3 Kx=DH(512) Au=RSA Enc=DES(40) Mac=SHA1 export EXP-EDH-DSS-DES-CBC-SHA SSLv3 Kx=DH(512) Au=DSS Enc=DES(40) Mac=SHA1 export EXP-DES-CBC-SHA SSLv3 Kx=RSA(512) Au=RSA Enc=DES(40) Mac=SHA1 export EXP-RC2-CBC-MD5 SSLv3 Kx=RSA(512) Au=RSA Enc=RC2(40) Mac=MD5 export EXP-RC2-CBC-MD5 SSLv2 Kx=RSA(512) Au=RSA Enc=RC2(40) Mac=MD5 export EXP-RC4-MD5 SSLv3 Kx=RSA(512) Au=RSA Enc=RC4(40) Mac=MD5 export EXP-RC4-MD5 SSLv2 Kx=RSA(512) Au=RSA Enc=RC4(40) Mac=MD5 export ++++++

1 0

How to surf the web over proxy?
by P. Jansen 25 Mar '07

25 Mar '07

Hi, I know there is a way to do the following with SSH+PuTTY, with stunnel too? Do I need further software? Windows office computer --> (HTTP) --> Corporate firewall/proxy --> (HTTP) --> Home computer --> WWW Regards, Patrick

1 0

Stunnel 4.20 with TCP Wrappers 7.6 problem in configure.ac
by lists＠d-ra.ath.cx 18 Mar '07

18 Mar '07

Hi, the following patch makes stunnel 4.20 to operate with TCP wrappers 7.6. I had not tried other versions of stunnel nor TCP wrappers. The problem is the missing libnsl, so TCP wrappers will never be activated in ./configure Regards Dieter --- configure.ac.orig 2007-03-17 12:57:32.000000000 +0100 +++ configure.ac 2007-03-17 12:55:19.000000000 +0100 @@ -310,7 +310,7 @@ AC_MSG_RESULT([no (autodetecting)]) AC_MSG_CHECKING([for hosts_access in -lwrap]) saved_LIBS="$LIBS" - LIBS="$saved_LIBS -lwrap" + LIBS="$saved_LIBS -lwrap -lnsl" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[int hosts_access(); int allow_severity, deny_severity;]],

2 9

Getting a "Peer suddenly disconnected" error
by David Goodwin 09 Mar '07

09 Mar '07

Hey all, I'm getting this in the /var/adm/messages log on the server side when attempting to connect from the client: Mar 8 22:23:33 SERVERNAME stunnel: [ID 821868 daemon.error] LOG3[27429:4]: SSL_connect: Peer suddenly disconnected I have the server configured as follows: cat /etc/stunnel/stunnel.test.conf client=yes debug=debug cert=/etc/stunnel/stunnel.pem [sunrpc] accept=112 connect=127.0.0.1:111 TIMEOUTclose=10 This is started just by running stunnel with the config file and then starting rpcbind normally. The client is configured as follows: # cat /etc/stunnel/stunnel.test.conf client=yes debug=debug cert=/etc/stunnel/imnxnsm0.pem [sunrpc] accept=111 connect=SERVERNAME:112 The error shows up when I attempt to run "rpcinfo -p 127.0.0.1". Snoop is showing the following (adjusted to remove hostnames/ips): CLIENT -> SERVER TCP D=112 S=63986 Syn Seq=867918817 Len=0 Win=24820 Options=<nop,nop,sackOK,mss 1460> SERVER -> CLIENT TCP D=63986 S=112 Syn Ack=867918818 Seq=209756753 Len=0 Win=24820 Options=<nop,nop,sackOK,mss 1460> CLIENT -> SERVER TCP D=112 S=63986 Ack=209756754 Seq=867918818 Len=0 Win=24820 CLIENT -> SERVER TCP D=112 S=63986 Ack=209756754 Seq=867918818 Len=88 Win=24820 SERVER -> CLIENT TCP D=63986 S=112 Ack=867918906 Seq=209756754 Len=0 Win=24820 SERVER -> CLIENT TCP D=63986 S=112 Rst Seq=209756754 Len=0 Win=24820 I'm pretty new to stunnel, and am having a heck of a time getting this to work. This configuration is the closest I've been to success so far. Is there a better way for me to wrap rpcbind perhaps? Any help with this will be appreciated. Thanks, Civil

2 2

DLLs for OpenSSL 0.9.8e
by Michal Trojnara 09 Mar '07

09 Mar '07

Dear Users, I've built the DLLs for OpenSSL 0.9.8e. They're available for download from: ftp://stunnel.mirt.net/openssl/binary-0.9.8e-zdll/ Best regards, Mike

1 0

problem accesing a https site as a Windows version client
by Gustavo 09 Mar '07

09 Mar '07

I'm running stunnel version 4.2 on Windows XP I can access a lot of websites, example https://servicios.afip.gov.ar/tramites_con_clave_fiscal/misAportes/images/t… but CAN'T access https://apwebserver.rentasgcba.gov.ar/ablpatib_ssl/images/Actitud_BsAs_negr… apparently a response never arrives to my PC my conf file is cert = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = yes ; Service-level configuration [https1] client = yes accept = 6001 connect = servicios.afip.gov.ar:443 TIMEOUTclose = 0 [https] client = yes accept = 6002 connect = apwebserver.rentasgcba.gov.ar:443 TIMEOUTclose = 5 ; vim:ft=dosini

2 1

Download speed affected with stunnel help needed please.
by tom hammond 07 Mar '07

07 Mar '07

Using HFS 2.1d http://www.rejetto.com and Stunnel 4.20 on single WinXP machine. The list of parameters you are using for stunnel, and if you are running it standalone or from inetd/xinetd: socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [https] accept = # connect = # TIMOUTclose = 0 I dont'understand 3-7 as given here: http://www.stunnel.org/support/ only used OpenSSL to make CERT Win32 OpenSSL v0.9.8e Light *************************************** Description: HFS is a webserver that can only utilize HTTP, therefore I turned to Stunnel to implement https. When using HTTPs: for UPLOADING I get full speed. When using HTTPs: for DOWNLoADING the speed in cut drastically, 20x slower. The odd thing is, multiple downloads can go at once eg: 20 connections @80kb/second However no single connection will get over 80 or 100kb/second I searched the net and couldn't find a solution, but continuously came across mention of "loopback" problems with stunnel and http servers (old posts) or saying stuff about Microsoft winsock, found a few mentions of VNC server having an option to "enable loopback connections" Another thing I saw but closed (oops) was mention of disabling an HTTP server in order to avoid loopback problems with HTTPS serving.(HFS has no option because it is designed to serve ONLY HTTP) I have tons of hope for an easy solution for the following reasons: #1, uploading works perfect #2 just downloaded demo of Easy File Sharing Web Server(not free like HFS) and the download speed works through HTTPS. I have no clue as to how to fix this, saw one entry in the stunnel config at ssl.org: socket = a:SO_BINDTODEVICE=lo I DID attempt to enter this line into the config under my 2 original entries, but then stunnel would not start. Thank you --------------------------------- TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV.

1 0

init_ssl: s_poll_wait timeout
by William Biagi 06 Mar '07

06 Mar '07

I am using a Eudora client configured to use STARTLS to send mail through stunnel to a sendmail server. The stunnel config is as follows: cert = /usr/local/etc/stunnel/stunnel.pem key = /usr/local/etc/stunnel/stunnel.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 options = DONT_INSERT_EMPTY_FRAGMENTS delay = yes TIMEOUTconnect = 300 TIMEOUTbusy = 300 setuid = smtpauth setgid = smtpauth debug = 7 client = no foreground = yes pid = [smtps] accept = 465 connect = localhost:25 protocol=smtp When I send mail the connection is established with port 465 on stunnel but it fails to negotiate the ssl session. THis is the log: 2007.03.06 15:45:08 LOG7[17753:1024]: Snagged 64 random bytes from /root/.rnd 2007.03.06 15:45:08 LOG7[17753:1024]: Wrote 1024 new random bytes to /root/.rnd 2007.03.06 15:45:08 LOG7[17753:1024]: RAND_status claims sufficient entropy for the PRNG 2007.03.06 15:45:08 LOG7[17753:1024]: PRNG seeded successfully 2007.03.06 15:45:08 LOG7[17753:1024]: Configuration SSL options: 0x00000800 2007.03.06 15:45:08 LOG7[17753:1024]: SSL options set: 0x00000800 2007.03.06 15:45:08 LOG7[17753:1024]: Certificate: /usr/local/etc/stunnel/stunnel.pem 2007.03.06 15:45:08 LOG7[17753:1024]: Certificate loaded 2007.03.06 15:45:08 LOG7[17753:1024]: Key file: /usr/local/etc/stunnel/stunnel.pem 2007.03.06 15:45:08 LOG7[17753:1024]: Private key loaded 2007.03.06 15:45:08 LOG7[17753:1024]: SSL context initialized for service smtps 2007.03.06 15:45:08 LOG5[17753:1024]: stunnel 4.20 on i686-pc-linux-gnu with OpenSSL 0.9.7l 28 Sep 2006 2007.03.06 15:45:08 LOG5[17753:1024]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 2007.03.06 15:45:08 LOG6[17753:1024]: file ulimit = 1024 (can be changed with 'ulimit -n') 2007.03.06 15:45:08 LOG6[17753:1024]: poll() used - no FD_SETSIZE limit for file descriptors 2007.03.06 15:45:08 LOG5[17753:1024]: 500 clients allowed 2007.03.06 15:45:08 LOG7[17753:1024]: FD 3 in non-blocking mode 2007.03.06 15:45:08 LOG7[17753:1024]: FD 4 in non-blocking mode 2007.03.06 15:45:08 LOG7[17753:1024]: FD 5 in non-blocking mode 2007.03.06 15:45:08 LOG7[17753:1024]: SO_REUSEADDR option set on accept socket 2007.03.06 15:45:08 LOG7[17753:1024]: smtps bound to 0.0.0.0:465 2007.03.06 15:45:08 LOG7[17753:1024]: No pid file being created 2007.03.06 15:45:18 LOG7[17753:1024]: smtps accepted FD=6 from 208.41.111.165:2542 2007.03.06 15:45:18 LOG7[17755:1026]: smtps started 2007.03.06 15:45:18 LOG7[17755:1026]: FD 6 in non-blocking mode 2007.03.06 15:45:18 LOG7[17755:1026]: TCP_NODELAY option set on local socket 2007.03.06 15:45:18 LOG5[17755:1026]: smtps accepted connection from 208.41.111.165:2542 2007.03.06 15:45:18 LOG7[17755:1026]: SSL state (accept): before/accept initialization 2007.03.06 15:45:20 LOG6[17755:1026]: init_ssl: s_poll_wait timeout 2007.03.06 15:45:20 LOG5[17755:1026]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.03.06 15:45:20 LOG7[17755:1026]: smtps finished (0 left) 2007.03.06 15:47:00 LOG3[17753:1024]: Received signal 2; terminating Can anyone tell me what I am doing wrong? BB

1 0

High CPU system usage on Solaris
by armando.salvatori＠accenture.com 05 Mar '07

05 Mar '07

We use stunnel process to encrypt Oracle connections from a set of 4-6 application server. On the DB server, 20 cpus Solaris machine running Oracle, we have more then 400 LWPS for stunnel and the relative 400 oracle connections. We experience a huge amount of cpu usage (system component), about 40%, after stunnel setup (stunnel 4.15 version) Is it usual? Do you have experience on similar situation? Do you have any suggestions to improve cpu usage or to address performance issue/tuning? Thank you very much AS This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.

1 0

make compile error options.c parse_ocsp_url
by William Biagi 03 Mar '07

03 Mar '07

./configure was successful but the make gave me the following: Making all in src make[1]: Entering directory `/home/bbiagi/stunnel-4.20/src' if gcc -DPACKAGE_NAME=\"stunnel\" -DPACKAGE_TARNAME=\"stunnel\" -DPACKAGE_VERSION=\"4.20\" -DPACKAGE_STRING=\"stunnel\ 4.20\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"stunnel\" -DVERSION=\"4.20\" -DHOST=\"i686-pc-linux-gnu\" -DCPU_I686=1 -DVENDOR_PC=1 -DOS_LINUX_GNU=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DSIZEOF_UNSIGNED_CHAR=1 -DSIZEOF_UNSIGNED_SHORT=2 -DSIZEOF_UNSIGNED_INT=4 -DSIZEOF_UNSIGNED_LONG=4 -DHAVE_DEV_PTMX=1 -DRANDOM_FILE=\"/dev/urandom\" -DHAVE_UCONTEXT_H=1 -DHAVE_PTHREAD_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_POLL_H=1 -DHAVE_SYS_POLL_H=1 -DHAVE_TCPD_H=1 -DHAVE_SYS_IOCTL_H=1 -DHAVE_STROPTS_H=1 -DHAVE_GRP_H=1 -DHAVE_UNISTD_H=1 -DHAVE_SYS_RESOURCE_H=1 -DHAVE_PTY_H=1 -DHAVE_LIBUTIL=1 -DHAVE_LIBDL=1 -DHAVE_LIBZ=1 -DHAVE_LIBPTHREAD=1 -DUSE_PTHREAD=1 -DHAVE_SNPRINTF=1 -DHAVE_VSNPRINTF=1 -DHAVE_OPENPTY=1 -DHAVE_DAEMON=1 -DHAVE_WAITPID=1 -DHAVE_WAIT4=1 -DHAVE_SETSID=1 -DHAVE_SETGROUPS=1 -DHAVE_CHROOT=1 -DHAVE_SYSCONF=1 -DHAVE_GETRLIMIT=1 -DHAVE_PTHREAD_SIGMASK=1 -DHAVE_LOCALTIME_R=1 -DHAVE_GETCONTEXT=1 -DHAVE_POLL=1 -DHAVE_ENDHOSTENT=1 -DHAVE_GETNAMEINFO=1 -DHAVE_GETADDRINFO=1 -DHAVE_OPENSSL=1 -Dssldir=\"/usr\" -DHAVE_OSSL_ENGINE_H=1 -I. -I. -I/usr/kerberos/include -DLIBDIR='"/usr/local/lib"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -g -O2 -Wall -Wshadow -Wcast-align -Wpointer-arith -I/usr/include -MT options.o -MD -MP -MF ".deps/options.Tpo" -c -o options.o options.c; \ then mv -f ".deps/options.Tpo" ".deps/options.Po"; else rm -f ".deps/options.Tpo"; exit 1; fi options.c: In function `parse_ocsp_url': options.c:1762: warning: implicit declaration of function `OCSP_parse_url' options.c:1767: structure has no member named `ocsp_addr' options.c:1769: structure has no member named `ocsp_path' options.c: In function `parse_ocsp_flag': options.c:1786: `OCSP_NOCERTS' undeclared (first use in this function) options.c:1786: (Each undeclared identifier is reported only once options.c:1786: for each function it appears in.) options.c:1787: `OCSP_NOINTERN' undeclared (first use in this function) options.c:1788: `OCSP_NOSIGS' undeclared (first use in this function) options.c:1789: `OCSP_NOCHAIN' undeclared (first use in this function) options.c:1790: `OCSP_NOVERIFY' undeclared (first use in this function) options.c:1791: `OCSP_NOEXPLICIT' undeclared (first use in this function) options.c:1792: `OCSP_NOCASIGN' undeclared (first use in this function) options.c:1793: `OCSP_NODELEGATED' undeclared (first use in this function) options.c:1794: `OCSP_NOCHECKS' undeclared (first use in this function) options.c:1795: `OCSP_TRUSTOTHER' undeclared (first use in this function) options.c:1796: `OCSP_RESPID_KEY' undeclared (first use in this function) options.c:1797: `OCSP_NOTIME' undeclared (first use in this function) options.c: At top level: options.c:1758: warning: `parse_ocsp_url' defined but not used options.c:1781: warning: `parse_ocsp_flag' defined but not used make[1]: *** [options.o] Error 1 make[1]: Leaving directory `/home/bbiagi/stunnel-4.20/src' make: *** [all-recursive] Error 1 I am trying to install on a red hat 7.3 with openssl-0.9.6b-18

2 1

RE: Stunnel Forks Out of Control
by Duncan Brown 24 Feb '07

24 Feb '07

Hi all, Ok, I've gone through my last log file for when this issue happens. There's "1130 finished (2 left)" (where 1030 is the port we're listening on) at 10:22am, for example. Then, the next "1130 finished" doesn't happen for about another 20 minutes (which is weird), and then says, "1131 finished (124 left)". It's at this point that a lot of "connection reset by peer"'s happen and "0 bytes sent to SSL" also happen. It looks as though there are a bunch of connections being accepted but not handled. Can anyone assist? The debug level 7 log file is available if necessary. Thanks again, guys. Cheers, Duncan

2 1

RE: Stunnel Forks Out of Control
by Duncan Brown 23 Feb '07

23 Feb '07

Hi all, As an update, it looks like I'm using Stunnel 4.15. I thought it said 4.20, unless I managed to compile an older version. Regardless, I think the problem is happening in both versions. It looks as though it can't catch up on processing cached requests or something. Does that help at all? Cheers, Duncan

1 0

Stunnel Forks Out of Control
by Duncan Brown 21 Feb '07

21 Feb '07

Hi all, I apologize if this issue appears in the archives but I've scoured them and can't find any similar instances (if this problem does occur in the archives then if someone could point it out to me I'd be grateful as well). So, here goes: I'm running Stunnel on Debian Linux. I run it in daemon mode and have the .conf file set to listen on a specific port and redirect to another port. Listening on the connecting end of Stunnel is another daemon I've created that listens on the same port for TCP traffic as part of a client-server application I have (a new process is forked for each connection). On the client end is a .NET application that communicates with the server via TCP with Stunnel installed. In my code, I've made sure that whenever a client-server session is finished, the server closes the socket, whether or not there was an error. Now, everything seems to work flawlessly for a period of time (this period of time is variable, from anywhere between 1 day to 1 month). Then, all of a sudden, Stunnel "explodes"; for example, while there might be one or two forks of my own daemon, there might be 128 instances of Stunnel, all of which are in a sleeping state (that is, if I run ps -aux, their "STAT" attribute is "S"), whereas before it exploded it was pretty much a 1:1 relationship. When it "explodes", I have to kill Stunnel and restart it, which is a pain in the rear-end given what I'm trying to do. Why is it doing this? How do I stop it from happening? I apologize again if this has already been brought up somewhere else, but I've been unable to find any references to any similar problems. If it's a "newbie" mistake or something I'll gladly accept it and learn from it. Please find below the information requested for a problem for the mailing list: - I'm using v4.20 - No parameters are used from the command-line when starting Stunnel; it just uses the standard .conf file which I've edited. - Output of "uname -a" : "Linux buffed 2.4.27-2-386 #1 Wed Aug 17 09:33:35 UTC 2005 i686 GNU/Linux" - I'm using libc v6 - Output of "gcc -v" : Reading specs from /usr/lib/gcc-lib/i486-linux/3.3.5/specs Configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --enable-__cxa_atexit --with-system-zlib --enable-nls --without-included-gettext --enable-clocale=gnu --enable-debug --enable-java-gc=boehm --enable-java-awt=xlib --enable-objc-gc i486-linux Thread model: posix gcc version 3.3.5 (Debian 1:3.3.5-13) - I'm using OpenSSL v0.9.7e (25 Oct 2004) Thanks in advance for any help. Cheers, Duncan

1 0

Stunnel proxy aware
by Kennet Svanberg 21 Feb '07

21 Feb '07

Hi, I'm quite happy with stunnel-4.05 but don't know how to add any of the proxy patches to make my own windows binaries. I also saw that others have wondered http://linode.mirt.net/pipermail/stunnel-users/2006-December/001404.html

1 0

Stunnel on AIX 5.3 and AIX 5.2 - Solution
by Trevor Maistry 21 Feb '07

21 Feb '07

Hi, I downloaded stunnel version 4.05, changed the configuration file to use "cc" instead of "gcc" and compiled on AIX 5300-04 and AIX 5200-03. Compilations worked fine. However, you must compile on the machine you want to use it on. Otherwise you will have problems. Copy the "stunnel", "stunnel.pem" and sample "stunnel.conf-sample.in" files into /usr/local/bin. Rename the "stunnel.conf-sample.in" to " "stunnel.conf". Change the "stunnel.conf" accordingly and start "stunnel" like so "./stunnel stunnel.conf". Hope this helps. Regards, Trevor Maistry Principal Systems Consultant ============================================= Information and Communication Technology Division University of KwaZulu-Natal King George v Avenue, Durban, 4041 Tel : +2731-2602475 Fax: +2731-2602125 Cell: +2782-787-5583 Email : maistryt(a)ukzn.ac.za =============================================: Please find our Email Disclaimer here: http://www.ukzn.ac.za/disclaimer/

1 0

Re: new Cygwin maintainer for stunnel
by Michal Trojnara 20 Feb '07

20 Feb '07

On Tuesday 20 February 2007 20:59, Andrew Schulman wrote: > Please add Cygwin to the list of "known good" OSes at > http://stunnel.mirt.net/, and add me to the list of maintainers in the > PORTS file. Done. Thank you. Mike

1 0

help
by RICH 16 Feb '07

16 Feb '07

Hi to all i need help i have install stunnel rpm in mandriva but can not find the config file

1 0

stunnel on Qnx 6.3
by Rajashekhar Durgadmath 15 Feb '07

15 Feb '07

Hello All, I am facing problems running stunnel for Qnx 6.3 cross compiled on solaris. I want to provide a https front end to thtttpd (www.acme.com) stunnel starts but fails. Logs are like this: 1980.01.01 15:01:46 LOG5[1069085:1]: stunnel 4.20 on sparc-sun-solaris2.9 with OpenSSL 0.9.8 05 Jul 2005 1980.01.01 15:01:46 LOG5[1069085:1]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 1980.01.01 15:01:46 LOG6[1069085:1]: file ulimit = 1000 (can be changed with 'ulimit -n') 1980.01.01 15:01:46 LOG6[1069085:1]: poll() used - no FD_SETSIZE limit for file descriptors 1980.01.01 15:01:46 LOG5[1069085:1]: 488 clients allowed 1980.01.01 15:01:46 LOG7[1069085:1]: FD 4 in non-blocking mode 1980.01.01 15:01:46 LOG7[1069085:1]: FD 5 in non-blocking mode 1980.01.01 15:01:46 LOG7[1069085:1]: FD 6 in non-blocking mode 1980.01.01 15:01:46 LOG7[1069085:1]: SO_REUSEADDR option set on accept socket 1980.01.01 15:01:46 LOG7[1069085:1]: stunnel bound to xxx.xx.xxx.xxx:443 1980.01.01 15:01:46 LOG7[1073200:1]: Created pid file /stunnel.pid <Browser connects> 1980.01.01 15:05:12 LOG7[1073200:1]: stunnel accepted FD=7 from yyy.yy.yyy.yyy:64822 1980.01.01 15:05:12 LOG7[1073200:2]: stunnel started 1980.01.01 15:05:12 LOG7[1073200:2]: FD 7 in non-blocking mode 1980.01.01 15:05:12 LOG7[1073200:2]: TCP_NODELAY option set on local socket 1980.01.01 15:05:12 LOG5[1073200:2]: stunnel accepted connection from qqq.qqq.qqq.qqq:64822 1980.01.01 15:05:12 LOG5[1073200:2]: Server mode 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): before/accept initialization 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 read client hello A 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 write server hello A 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 write certificate A 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 write server done A 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 flush data 1980.01.01 15:05:12 LOG7[1073200:2]: SSL state (accept): SSLv3 read client key exchange A 1980.01.01 15:05:13 LOG7[1073200:2]: SSL state (accept): SSLv3 read finished A 1980.01.01 15:05:13 LOG7[1073200:2]: SSL state (accept): SSLv3 write change cipher spec A 1980.01.01 15:05:13 LOG7[1073200:2]: SSL state (accept): SSLv3 write finished A 1980.01.01 15:05:13 LOG7[1073200:2]: SSL state (accept): SSLv3 flush data 1980.01.01 15:05:13 LOG7[1073200:2]: 1 items in the session cache 1980.01.01 15:05:13 LOG7[1073200:2]: 0 client connects (SSL_connect()) 1980.01.01 15:05:13 LOG7[1073200:2]: 0 client connects that finished 1980.01.01 15:05:13 LOG7[1073200:2]: 0 client renegotiations requested 1980.01.01 15:05:13 LOG7[1073200:2]: 1 server connects (SSL_accept()) 1980.01.01 15:05:13 LOG7[1073200:2]: 1 server connects that finished 1980.01.01 15:05:13 LOG7[1073200:2]: 0 server renegotiations requested 1980.01.01 15:05:13 LOG7[1073200:2]: 0 session cache hits 1980.01.01 15:05:13 LOG7[1073200:2]: 1 session cache misses 1980.01.01 15:05:13 LOG7[1073200:2]: 0 session cache timeouts 1980.01.01 15:05:13 LOG6[1073200:2]: SSL accepted: new session negotiated 1980.01.01 15:05:13 LOG6[1073200:2]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 < SSL Negotiation done > 1980.01.01 15:08:49 LOG3[1073200:2]: remote socket: Address family not supported by protocol family (247) <<<<<< 1980.01.01 15:08:49 LOG5[1073200:2]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 1980.01.01 15:08:49 LOG7[1073200:2]: stunnel finished (0 left) I checked the address family; it is AF_INET :) socket syscall in client.c:989 is failing. I know the error "Address family not supported by protocol family (247)" says it all, but there are other applications running on the box which do the same thing and it works for them. Versions: OpenSSL 0.9.8 and stunnel 4.20. stunnel.conf ## stunnel.conf starts cert = /etc/localhost_cert.pem key = /etc/localhost_key.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = all ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /some_dir setuid = root setgid = root ; PID is created inside chroot jail pid = /stunnel.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 output = /some_dir/stunnel.log [https] accept = <Qnx box IP>:443 connect = <Qnx box IP>:80 ## stunnel.conf end # uname -a QNX localhost 6.3.0 2006/04/27-13:08:16EST armbe It was configured thus: ./configure --prefix=/vob/nmi/3rd_party/stunnel --enable-dependency-tracking --with-ssl=/vob/nmi/3rd_party/openssl/ --build=armbe-qnx --host=sparc-sun-solaris2.9 --with-threads=pthread --disable-libwrap Removing the --disable-libwrap does not help. stunnel is started like this: stunnel /etc/stunnel.conf -d http -r localhost:http -p /etc This also did not help: stunnel /etc/stunnel.conf -d https -r localhost:http -p /etc stunnel /etc/stunnel.conf # stunnel -version stunnel 4.20 on sparc-sun-solaris2.9 with OpenSSL 0.9.8 05 Jul 2005 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 Global options debug = 5 pid = /some_path/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /some_path/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /some_path/stunnel.pem session = 300 seconds sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none Please reply, All comments appreciated. Cheers, Raj --------------------------------- New Yahoo! Mail is the ultimate force in competitive emailing. Find out more at the Yahoo! Mail Championships. Plus: play games and win prizes.

1 0

slow transfer of smtp
by jason kawaja 15 Feb '07

15 Feb '07

greetings. clients connects normally when not using ssl (stunnel). when using ssl the connection on the client end appears to take about a minute but does eventually work (mail is sent through encrypted). shown below is the log with debug=7 and a space between the area where a "pause" seems to be, ideas on what could be occurring during this time to induce the "pause"? client = machine making connection. server = machine running stunnel accepting the connection. 2007.02.14 12:24:06 LOG7[69377:134631424]: imaps accepted FD=9 from client:62847 2007.02.14 12:24:06 LOG7[69377:134633984]: imaps started 2007.02.14 12:24:06 LOG7[69377:134633984]: FD 9 in non-blocking mode 2007.02.14 12:24:06 LOG7[69377:134633984]: TCP_NODELAY option set on local socket 2007.02.14 12:24:06 LOG7[69377:134633984]: FD 10 in non-blocking mode 2007.02.14 12:24:06 LOG7[69377:134633984]: FD 11 in non-blocking mode 2007.02.14 12:24:06 LOG7[69377:134633984]: Connection from client: 62847 permitted by libwrap 2007.02.14 12:24:06 LOG5[69377:134633984]: imaps connected from client:62847 2007.02.14 12:24:06 LOG7[69377:134631424]: Cleaning up the signal pipe 2007.02.14 12:24:06 LOG6[69377:134631424]: Child process 69387 finished with code 0 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): before/ accept initialization 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 read client hello A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 write server hello A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 write certificate A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 write server done A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 flush data 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 read client key exchange A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 read finished A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 write change cipher spec A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 write finished A 2007.02.14 12:24:06 LOG7[69377:134633984]: SSL state (accept): SSLv3 flush data 2007.02.14 12:24:06 LOG7[69377:134633984]: 1 items in the session cache 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 client connects (SSL_connect()) 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 client connects that finished 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 client renegotiatations requested 2007.02.14 12:24:06 LOG7[69377:134633984]: 1 server connects (SSL_accept()) 2007.02.14 12:24:06 LOG7[69377:134633984]: 1 server connects that finished 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 server renegotiatiations requested 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 session cache hits 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 session cache misses 2007.02.14 12:24:06 LOG7[69377:134633984]: 0 session cache timeouts 2007.02.14 12:24:06 LOG6[69377:134633984]: SSL accepted: new session negotiated 2007.02.14 12:24:06 LOG6[69377:134633984]: Negotiated ciphers: AES128- SHA SSLv3 Kx=RSA Au=RSA Enc=AES(128) Mac=SHA1 2007.02.14 12:24:06 LOG7[69377:134633984]: FD 10 in non-blocking mode 2007.02.14 12:24:06 LOG7[69377:134633984]: imaps connecting server:143 2007.02.14 12:24:06 LOG7[69377:134633984]: connect_wait: waiting 10 seconds 2007.02.14 12:24:06 LOG7[69377:134633984]: connect_wait: connected 2007.02.14 12:24:06 LOG7[69377:134633984]: Remote FD=10 initialized 2007.02.14 12:24:06 LOG7[69377:134633984]: TCP_NODELAY option set on remote socket 2007.02.14 12:24:08 LOG7[69377:134631424]: ssmtp accepted FD=11 from client:62848 2007.02.14 12:24:08 LOG7[69377:134881280]: ssmtp started 2007.02.14 12:24:08 LOG7[69377:134881280]: FD 11 in non-blocking mode 2007.02.14 12:24:08 LOG7[69377:134881280]: TCP_NODELAY option set on local socket 2007.02.14 12:24:08 LOG7[69377:134881280]: FD 12 in non-blocking mode 2007.02.14 12:24:08 LOG7[69377:134881280]: FD 13 in non-blocking mode 2007.02.14 12:24:08 LOG7[69377:134881280]: Connection from client: 62848 permitted by libwrap 2007.02.14 12:24:08 LOG5[69377:134881280]: ssmtp connected from client:62848 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): before/ accept initialization 2007.02.14 12:24:08 LOG7[69377:134631424]: Cleaning up the signal pipe 2007.02.14 12:24:08 LOG6[69377:134631424]: Child process 69391 finished with code 0 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 read client hello A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 write server hello A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 write certificate A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 write server done A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 flush data 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 read client key exchange A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 read finished A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 write change cipher spec A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 write finished A 2007.02.14 12:24:08 LOG7[69377:134881280]: SSL state (accept): SSLv3 flush data 2007.02.14 12:24:08 LOG7[69377:134881280]: 2 items in the session cache 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 client connects (SSL_connect()) 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 client connects that finished 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 client renegotiatations requested 2007.02.14 12:24:08 LOG7[69377:134881280]: 2 server connects (SSL_accept()) 2007.02.14 12:24:08 LOG7[69377:134881280]: 2 server connects that finished 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 server renegotiatiations requested 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 session cache hits 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 session cache misses 2007.02.14 12:24:08 LOG7[69377:134881280]: 0 session cache timeouts 2007.02.14 12:24:08 LOG6[69377:134881280]: SSL accepted: new session negotiated 2007.02.14 12:24:08 LOG6[69377:134881280]: Negotiated ciphers: AES128- SHA SSLv3 Kx=RSA Au=RSA Enc=AES(128) Mac=SHA1 2007.02.14 12:24:08 LOG7[69377:134881280]: FD 12 in non-blocking mode 2007.02.14 12:24:08 LOG7[69377:134881280]: ssmtp connecting server:25 2007.02.14 12:24:08 LOG7[69377:134881280]: connect_wait: waiting 10 seconds 2007.02.14 12:24:08 LOG7[69377:134881280]: connect_wait: connected 2007.02.14 12:24:08 LOG7[69377:134881280]: Remote FD=12 initialized 2007.02.14 12:24:08 LOG7[69377:134881280]: TCP_NODELAY option set on remote socket 2007.02.14 12:25:06 LOG7[69377:134631424]: imaps accepted FD=13 from client:62850 2007.02.14 12:25:06 LOG7[69377:134882816]: imaps started 2007.02.14 12:25:06 LOG7[69377:134882816]: FD 13 in non-blocking mode 2007.02.14 12:25:06 LOG7[69377:134882816]: TCP_NODELAY option set on local socket 2007.02.14 12:25:06 LOG7[69377:134882816]: FD 14 in non-blocking mode 2007.02.14 12:25:06 LOG7[69377:134882816]: FD 15 in non-blocking mode 2007.02.14 12:25:06 LOG7[69377:134882816]: Connection from client: 62850 permitted by libwrap 2007.02.14 12:25:06 LOG5[69377:134882816]: imaps connected from client:62850 2007.02.14 12:25:06 LOG7[69377:134631424]: Cleaning up the signal pipe 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): before/ accept initialization 2007.02.14 12:25:06 LOG6[69377:134631424]: Child process 69478 finished with code 0 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 read client hello A 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 write server hello A 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 write change cipher spec A 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 write finished A 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 flush data 2007.02.14 12:25:06 LOG7[69377:134882816]: SSL state (accept): SSLv3 read finished A 2007.02.14 12:25:06 LOG7[69377:134882816]: 2 items in the session cache 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 client connects (SSL_connect()) 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 client connects that finished 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 client renegotiatations requested 2007.02.14 12:25:06 LOG7[69377:134882816]: 3 server connects (SSL_accept()) 2007.02.14 12:25:06 LOG7[69377:134882816]: 3 server connects that finished 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 server renegotiatiations requested 2007.02.14 12:25:06 LOG7[69377:134882816]: 1 session cache hits 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 session cache misses 2007.02.14 12:25:06 LOG7[69377:134882816]: 0 session cache timeouts 2007.02.14 12:25:06 LOG6[69377:134882816]: SSL accepted: previous session reused 2007.02.14 12:25:06 LOG7[69377:134882816]: FD 14 in non-blocking mode 2007.02.14 12:25:06 LOG7[69377:134882816]: imaps connecting server:143 2007.02.14 12:25:06 LOG7[69377:134882816]: connect_wait: waiting 10 seconds 2007.02.14 12:25:06 LOG7[69377:134882816]: connect_wait: connected 2007.02.14 12:25:06 LOG7[69377:134882816]: Remote FD=14 initialized 2007.02.14 12:25:06 LOG7[69377:134882816]: TCP_NODELAY option set on remote socket -- Jason Kawaja, 2-4568 IT Expert, UF Dept of ECE

1 1

configure/compile issue on AIX&In-Reply-To=
by Trevor Maistry 09 Feb '07

09 Feb '07

Hi, Does anyone have a version of Stunnel which runs on AIX 5.3? Also, what is the idle timeout set to and how do I change it? Many thanks. Regards, Trevor Maistry Principal Systems Consultant ============================================= Information and Communication Technology Division University of KwaZulu-Natal King George v Avenue, Durban, 4041 Tel : +2731-2602475 Fax: +2731-2602125 Cell: +2782-787-5583 Email : maistryt(a)ukzn.ac.za =============================================: Please find our Email Disclaimer here: http://www.ukzn.ac.za/disclaimer/

1 0

"The most recent stable Stunnel version?"
by Roger Fulton 04 Feb '07

04 Feb '07

Hi, I've checked the support pages. I've browsed the mailing list archives. I've perused the ChangeLog file. I can't find an answer to this question: At http://www.stunnel.org/download/binaries.html is stated "The most recent stable Stunnel version is flagged with a red asterisk (*)." I've used two different browsers, and I'll be danged if I see *any* version marked with *any* asterisk, red or otherwise. Would someone kindly direct this Stunnel newbie to the "most recent stable Stunnel version?" TIA.

2 1

Oracle JDBC Failover not working
by Dario Mariani 02 Feb '07

02 Feb '07

Hi all. We have a problem here with this configuration. before stunnel: BEA Weblogic, 2 JDBC, server1:1521 and server2:1521 Two SunCluster nodes with Oracle OPS/RAC (active-active conf), with NO shared address. So "server1" and "server2" are the phisical address. after stunnel: the JDBC config is 127.0.0.1:10001 and 127.0.0.1:10002 stunnel client is 10001->server1:11521 and 10002->server2:11521 stunnel server is 11521->localhost:1521 When we shut down the server1 (so oracle, listener and stunnel server is not responding), BEA cannot failover. A quick analisys shows that: 1. the JDBC connects to stunnel client, that accept the connection 2. stunnel client fails to connect to stunnel server 3. stunnel client close the connection with the JDBC 4. the JDBC cannot deal with the situation and doesn't failover. It seems like JDBC doesn't failover when he can open a connection but oracle doesn't reply. What i need is: is possible for Stunnel client to FIRST try to connect to the server, and then eventually accept the connection from the jdbc? Bye, dario.

2 1

Intermediate Cert validation problem
by Eric McCombs 31 Jan '07

31 Jan '07

I'm experiencing a problem validating intermediate cert on our Stunnel configuration. We are using Stunnel to forward IMAP, POP and SMTP SSL ports from our vpn server to our internal mail server. We originally used a self-signed cert on the vpn server. When clients connect via Outlook, Outlook Express, Thunderbird and various cell phone mail programs they received a warning message (Unable to verify identity of xxx) about the self-signed cert. To resolve this issue we purchased a SSL cert from Verisign to install on the vpn server. We generated the key and CSR and received the new cert from Verisign, which also requires an intermediate cert for verification. We have tried various methods to have the certs validated, combining the key, intermediate cert and server cert in one file, pointing to the CA_file, etc. but continue to see the Unable to verify identity message. Has anybody else encountered this problem and found a way to resolve the problem? Thanks in advance. Eric McCombs

1 1

(no subject)
by Hemesath, Dean CTR USTRANSCOM J6 25 Jan '07

25 Jan '07

To all, Can Stunnel communicate bi-directionally over a single port? Or does it listen on one and communicate on a different one? Thanks Dean

1 0

dude using stunnel
by aza zel 24 Jan '07

24 Jan '07

hi, is my first message in this list and i send to all of members a great greeting i want to now if this stage is posible (i look the example in your web site that inspired me) NET +---------+ | | +--------+ | non-SSL | -ST---- | | --- | LDAP | | enabled | | | | WITH | | client | | | | SSL | +---------+ | | +--------+ winXP CLIENT | | LDAP SERVER | | +---------+ | | | | ------- | | | | | | | client | +---------+ linux CLIENT In client side i have: - linux clients autenticate via pam and using tls (here i not have problems) :) - win xp (sp2) clients auntenticate via pgina without ssl or tls (i cant make work ssl in pgina (its posible the problem was the server certificate)) :( in server side i have a solaris when run a sun ldap server using a self signed certificate and accepting ssl/tls or not ssl/tls connections :) so, ¿with stunnel only in win side can i have this stage using the self signed cetificate provided by server? Salu2 :D

1 0

Re: [stunnel-users] How is stunnel started ? / Searching stunnel service name
by Ben Stover 22 Jan '07

22 Jan '07

Hmm that is very curious. I investigated now all runnig services and did not found the stunnel service. The only reason I can find for this is that the service name does not contain "stunnel" in its name. How is it called otherwise? My services here (under Win2000) are (when I type "net start" at the command prompt): Alerter AVK Monitor AVK Service AVKProxy COM+ Event System Computer Browser DHCP Client Distributed Link Tracking Client Event Log IPSEC Policy Agent Logical Disk Manager MGABGEXE Network Connections PDFCreatorMessages PDScheduler Plug and Play Print Spooler Protected Storage Remote Access Connection Manager Remote Procedure Call (RPC) Remote Registry Service Removable Storage RunAs Service Security Accounts Manager Server Still Image Service System Event Notification Task Scheduler TCP/IP NetBIOS Helper Service Telephony Washer AutoComplete Windows Management Instrumentation Windows Management Instrumentation Driver Extensions Workstation Is it IPSEC Policy agent the service for stunnel ? Regards Ben On Fri, 19 Jan 2007 08:24:56 -0500, Carter Browne wrote: >One of the installation options is to have it run as a service in which >case it starts automatically as you note. This behavior can be >controlled from the services option in the administrative options of the >control panel (entering services.msc from the command line will also >bring it up). Then name of the service is stunnel. > >Carter > >Ben Stover wrote: >> After installation stunnel started automatically at Windows startup time. >> >> I tried to investigate how it is started. >> But did neither a classic startup folder entry nor a running service entry. >> Did I miss something? >> >> How is stunnel started ? >> >> Ben >> >> >> >> >> ___________________________________________________________ >> All New Yahoo! Mail â¬ Tired of Vi@gr@! come-ons? Let our SpamGuard protect you. http://uk.docs.yahoo.com/nowyoucan.html >> _______________________________________________ >> stunnel-users mailing list >> stunnel-users(a)mirt.net >> http://stunnel.mirt.net/mailman/listinfo/stunnel-users >> >> ___________________________________________________________ Now you can scan emails quickly with a reading pane. Get the new Yahoo! Mail. http://uk.docs.yahoo.com/nowyoucan.html

2 1

SCO 6 Compil of libxml2
by Eric S. Eberhard 22 Jan '07

22 Jan '07

Everyone, With a lot of help from Daniel I got it to work under the new SCO. It takes a few trick: chsysinfo uw7 ./configure --without-zlib --without-threads chsysinfo default make In case anyone else needs to do this :-) Thanks! Eric This email sent by: Eric S. Eberhard (928) 567-3727 Voice http://www.vicsmba.com

1 0

SCO 6 Compil of libxml2
by Eric S. Eberhard 22 Jan '07

22 Jan '07

Everyone, With a lot of help from Daniel I got it to work under the new SCO. It takes a few trick: chsysinfo uw7 ./configure --without-zlib --without-threads chsysinfo default make In case anyone else needs to do this :-) Thanks! Eric This email sent by: Eric S. Eberhard (928) 567-3727 Voice

1 0

Re: [stunnel-users] patch: round robin load balancing
by Michal Trojnara 20 Jan '07

20 Jan '07

Luke wrote: > Here is a simple patch which allows the "connect" option to accept a > comma separated list of names instead of just a single name. This feature is already implemented since version 4.06, 2004.12.26. Here is the relevant frament of ChangeLog: "Multiple connect=host:port options are allowed in a single service section. Remote hosts are connected using round-robin algorithm. This feature is not compatible with delayed resolver." Best regards, Mike

2 2

Error I am receiving in stunnel logfile (help please!)
by Eric S. Eberhard 20 Jan '07

20 Jan '07

Hello Everyone, I tried it on 4.3.3 as well with my re-compiled version ... below are all 5 lines in the log file. stunnel 4.16 on powerpc-ibm-aix4.3.3.0 with OpenSSL 0.9.8c 05 Sep 2006 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 stunnel connected from 127.0.0.1:37690 remote socket: Addr family not supported by protocol (66) Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket I also recompiled the latest stunnel with and without IPv6 ... same result with IPv6 as with IPv4 and same result with the new version: stunnel 4.20 on powerpc-ibm-aix4.3.3.0 with OpenSSL 0.9.8c 05 Sep 2006 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 stunnel accepted connection from ::ffff:127.0.0.1:59274 remote socket: Addr family not supported by protocol (66) Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket I have been using this for a while but I had to transfer to a new machine (AIX 4.3 to 5.3) and had to recompile my software and get a newer stunnel. I am now on 4.20 I thought it might be related to ipv4 versus ipv6 ... according to AIX documentation I had it set up for ipv4. I tried ipv6 for ducks, no difference. My inetd.conf line is: visanet stream tcp nowait root /visanet/ssl/stunnel stunnel visanet stream tcp6 nowait root /visanet/ssl/stunnel stunnel The second is IPv6. The error is somehow on the remote though. I can connect to the remote with telnet ... just not stunnel. It seems that depending on how inetd is configured, stunnel accepts either the IPv4 or IPv6 whether or not I compil it using USE_IPv6 1 or not ... what am I missing!? I really only need to hack it to connect to this one site, at least for the moment. /visanet/ssl/visanet.conf My .conf file is: output = /tmp/stunnel.log debug = 5 RNDfile = /visanet/ssl/stunnel.rnd RNDoverwrite = yes client = yes connect = ssllab.pgs.wcom.net:443 sslVersion = SSLv2 cert = /visanet/ssl/stunnel.pem EGD = /etc/egd-pool My guess is that this is something really stupid I am doing, but it is not obvious. Any help would be appreciated. I would even take an AIX executable for stunnel that works! Or whatever the correct configure options are. Or???? Thanks, Eric This email sent by: Eric S. Eberhard (928) 567-3727 Voice (928) 567-6122 Fax 928-301-7537 -- you may call any time day or night, I turn it off when I sleep :-) Please try to use a land line first (reception often poor). Note the change in the domain from vicspdi.com to vicsmba.com !!!! For Metropolis support and VICS MBA Support!!!! http://www.vicsmba.com Completely updated web site of personal pictures with many new pictures! Includes horses, dogs, Corvairs, and more. http://www.vicsmba.com/ourpics/index.html Corvair pictures including the Judson setup on our 62 Sedan and lots of pictures of Cheryl's 62 Monza Wagon and our 62 Spyder convertible. http://www.vicsmba.com/ourpics/corvairs.html My younger brother Martin has started a very serious car company. A hot rod (very fast) electric roadster is the first offering. The chassis is built by Lotus to their specs. Check it out: http://www.teslamotors.com _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users This email sent by: Eric S. Eberhard (928) 567-3727 Voice (928) 567-6122 Fax 928-301-7537 -- you may call any time day or night, I turn it off when I sleep :-) Please try to use a land line first (reception often poor). Note the change in the domain from vicspdi.com to vicsmba.com !!!! For Metropolis support and VICS MBA Support!!!! http://www.vicsmba.com Completely updated web site of personal pictures with many new pictures! Includes horses, dogs, Corvairs, and more. http://www.vicsmba.com/ourpics/index.html Corvair pictures including the Judson setup on our 62 Sedan and lots of pictures of Cheryl's 62 Monza Wagon and our 62 Spyder convertible. http://www.vicsmba.com/ourpics/corvairs.html My younger brother Martin has started a very serious car company. A hot rod (very fast) electric roadster is the first offering. The chassis is built by Lotus to their specs. Check it out: http://www.teslamotors.com

1 0

Re: [stunnel-users] How is stunnel started ?
by Gonzalo Diethelm 19 Jan '07

19 Jan '07

Probably through a Run entry in the registry. You should definitely try to use something like CodeStuff's Starter: http://members.lycos.co.uk/codestuff/ Best regards. On Fri, 2007-01-19 at 09:31 +0100, Ben Stover wrote: > After installation stunnel started automatically at Windows startup time. > > I tried to investigate how it is started. > But did neither a classic startup folder entry nor a running service entry. > Did I miss something? > > How is stunnel started ? > > Ben > > > > > ___________________________________________________________ > All New Yahoo! Mail – Tired of Vi@gr@! come-ons? Let our SpamGuard protect you. http://uk.docs.yahoo.com/nowyoucan.html > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)mirt.net > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > -- Gonzalo Diethelm gonzalo.diethelm(a)aditiva.com

2 2

Error I am receiving in stunnel logfile (more info)
by Eric S. Eberhard 18 Jan '07

18 Jan '07

Hello Everyone, I tried it on 4.3.3 as well with my re-compiled version ... below are all 5 lines in the log file. stunnel 4.16 on powerpc-ibm-aix4.3.3.0 with OpenSSL 0.9.8c 05 Sep 2006 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv4 stunnel connected from 127.0.0.1:37690 remote socket: Addr family not supported by protocol (66) Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket I have been using this for a while but I had to transfer to a new machine (AIX 4.3 to 5.3) and had to recompile my software and get a newer stunnel. My version is stunnel-3.8p4: I thought it might be related to ipv4 versus ipv6 ... according to AIX documentation I had it set up for ipv4. I tried ipv6 for ducks, no difference. My inetd.conf line is: visanet stream tcp nowait root /visanet/ssl/stunnel stunnel /visanet/ssl/visanet.conf My .conf file is: output = /tmp/stunnel.log debug = 5 RNDfile = /visanet/ssl/stunnel.rnd RNDoverwrite = yes client = yes connect = ssllab.pgs.wcom.net:443 sslVersion = SSLv2 cert = /visanet/ssl/stunnel.pem EGD = /etc/egd-pool My guess is that this is something really stupid I am doing, but it is not obvious. Any help would be appreciated. Thanks, Eric This email sent by: Eric S. Eberhard (928) 567-3727 Voice (928) 567-6122 Fax 928-301-7537 -- you may call any time day or night, I turn it off when I sleep :-) Please try to use a land line first (reception often poor). Note the change in the domain from vicspdi.com to vicsmba.com !!!! For Metropolis support and VICS MBA Support!!!! http://www.vicsmba.com Completely updated web site of personal pictures with many new pictures! Includes horses, dogs, Corvairs, and more. http://www.vicsmba.com/ourpics/index.html Corvair pictures including the Judson setup on our 62 Sedan and lots of pictures of Cheryl's 62 Monza Wagon and our 62 Spyder convertible. http://www.vicsmba.com/ourpics/corvairs.html My younger brother Martin has started a very serious car company. A hot rod (very fast) electric roadster is the first offering. The chassis is built by Lotus to their specs. Check it out: http://www.teslamotors.com

1 0

Error I am receiving in stunnel logfile
by Eric S. Eberhard 18 Jan '07

18 Jan '07

Hello Everyone, remote socket: Addr family not supported by protocol (66) I have been using this for a while but I had to transfer to a new machine (AIX 4.3 to 5.3) and had to recompile my software and get a newer stunnel. My version is stunnel-3.8p4: My .conf file is: output = /tmp/stunnel.log debug = 5 RNDfile = /visanet/ssl/stunnel.rnd RNDoverwrite = yes client = yes connect = ssllab.pgs.wcom.net:443 sslVersion = SSLv2 cert = /visanet/ssl/stunnel.pem EGD = /etc/egd-pool My guess is that this is something really stupid I am doing, but it is not obvious. Any help would be appreciated. Thanks, Eric This email sent by: Eric S. Eberhard (928) 567-3727 Voice (928) 567-6122 Fax 928-301-7537 -- you may call any time day or night, I turn it off when I sleep :-) Please try to use a land line first (reception often poor). Note the change in the domain from vicspdi.com to vicsmba.com !!!! For Metropolis support and VICS MBA Support!!!! http://www.vicsmba.com Completely updated web site of personal pictures with many new pictures! Includes horses, dogs, Corvairs, and more. http://www.vicsmba.com/ourpics/index.html Corvair pictures including the Judson setup on our 62 Sedan and lots of pictures of Cheryl's 62 Monza Wagon and our 62 Spyder convertible. http://www.vicsmba.com/ourpics/corvairs.html My younger brother Martin has started a very serious car company. A hot rod (very fast) electric roadster is the first offering. The chassis is built by Lotus to their specs. Check it out: http://www.teslamotors.com

1 0

RE: [stunnel-users] Does editing *.conf file require restart of stunnel ?
by Stunnel 15 Jan '07

15 Jan '07

Hi, As far as I know the service needs to be restarted to load the new configuration. Regards Craig -----Original Message----- From: stunnel-users-bounces(a)mirt.net [mailto:[email protected]] On Behalf Of Ben Stover Sent: 15 January 2007 01:16 PM To: stunnel-users(a)mirt.net Subject: [stunnel-users] Does editing *.conf file require restart of stunnel ? Hello, sorry for this newbie question. I did not found the answer in the FAQ. Assume I edit the *.conf file. Is it required to restrat stunnel (service) to enable the changes ? Or is the *.conf file read at ever new stunnel call? If explicit restart is required: would it be possible to add a context menu entry to the Windows systray-Stunnel-icon "restart". This would make handling much more comfortable than always opening a command line window and entering all the commands manually. Thank you Ben ___________________________________________________________ Try the all-new Yahoo! Mail. "The New Version is radically easier to use" - The Wall Street Journal http://uk.docs.yahoo.com/nowyoucan.html _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users

1 0

re: Problem with certificates using smtp/pop
by Klaas 12 Jan '07

12 Jan '07

> cert = /path/to/certnew.cer > key = /path/to/stunnel.pem > Or concatenate them into one file and use cert = ... only > (no key = ...). > Also take care that the CN is the server FQDN to which the client > connects. Thanks, it works now perfect!

1 0

Re: [stunnel-users] re: Problem with certificates using smtp/pop
by Hans Werner Strube 11 Jan '07

11 Jan '07

"Klaas" wrote: > I have a part I sent to CA created whit openssl req -new -days > 365 -nodes -config stunnel.cnf -out certreq.pem -keyout stunnel.pem > > I have get return a file certnew.cer and I have the file stunnel.pem. And > now I don't know what I have to do next to get this certificate. I have > tried several options but no one works. cert = /path/to/certnew.cer key = /path/to/stunnel.pem Or concatenate them into one file and use cert = ... only (no key = ...). Also take care that the CN is the server FQDN to which the client connects.

1 0

re: Problem with certificates using smtp/pop
by Klaas 11 Jan '07

11 Jan '07

Sorry David that I have misted you e-mail. I'm using stunnel on a Windows server and I have working it all. I use outlook express as mail client and when I pres OK on the message of the certificate it works. But I want to install a real certificate. Only I don't exactly where I have place which part of the certificate and what I place into the stunnel.conf I have a part I sent to CA created whit openssl req -new -days 365 -nodes -config stunnel.cnf -out certreq.pem -keyout stunnel.pem I have get return a file certnew.cer and I have the file stunnel.pem. And now I don't know what I have to do next to get this certificate. I have tried several options but no one works.

1 0

Problems with Powerposter?
by Roger Stevens 10 Jan '07

10 Jan '07

I'm curious if anyone else has tried Stunnel with Powerposter on the Giganews Usenet network. I (and many other users) have reported problems whereby the post does not complete and just hangs. Per Giganews, this is a software problem and not their servers. Non-SSL posting in Powerposter works fine. but hangs when Stunnel is used usually after a couple of files are successfully uploaded. Any else run into this? TIA! Roger

1 0

re: Problem with certificates using smtp/pop
by David Chase 10 Jan '07

10 Jan '07

I tried sending directly to you, I must have looked like a spammer. I am ever so slightly pleased to see that I have some company in my frustration with this software. I'll try to help, since the experts seem to be too busy. I've only used it twice, and it was painful both times. Have you gotten it to work at all? That is, what do you see? Do you get a running stunnel process? Do you have (with permissions) ls -l /usr/local/etc/stunnel/mail.pem -rw------- 1 root staff 2233 Jan 5 17:25 /usr/local/etc/stunnel/ mail.pem I created it by running this command in that directory: sudo openssl req -new -out mail.pem -keyout mail.pem -nodes -x509 - days 365 I created a stupid certificate, because at some point it looked like it was asking me for my name (David Chase) when what they wanted was my fully qualified domain name (dr2chase.org) so that part of the certificate is wrong. The certificate creation in the makefile asked for this in a slightly more sensible way, using the abbreviation "FQDN", though you have to wonder how busy the authors of some of this security software are, that they cannot take the time to type in "Fully qualified domain name", and instead expect us to figure it out. It can be whiny about permissions, in a non-specific way (as if the software ran a one-way-hash on the permissions, didn't get a match, and expected you to just guess till it worked.) sudo chmod 600 /usr/local/etc/stunnel/mail.pem sudo chmod 755 /usr/local/etc/stunnel/ sudo chown root /usr/local/etc/stunnel/stunnel.conf You'll need to copy the sample stunnel.conf file into the real one: sudo cp /usr/local/etc/stunnel/stunnel.conf-sample /usr/local/etc/ stunnel/stunnel.conf You might want to look it over, though I don't recall changing much in mine. You might want to turn on debug logging there; mine seemed to spew in the invoking terminal, instead of any file that I could find, but that was good enough for a start: debug = 7 output = stunnel.log Some part of stunnel created its chroot directory with incorrect (for MacOS, at least) permissions: % ls -ld /usr/local/var/lib/stunnel/ 948 drwxrwx--T 2 root wheel 68 Jan 5 16:55 /usr/local/var/lib/ stunnel/ That's the one that didn't work, and clearly someone thought carefully about giving it the wrong permissions -- that "T" didn't get there accidentally. This caused silent failure for me. What worked, but might not be secure, is drwxrwxrwx 2 root wheel 68 Jan 6 00:16 /usr/local/var/lib/stunnel/ My guess is that it would be better if it were owned by nobody/nogroup, but this is clearly something that trained experts should GET RIGHT, instead of leaving it busted for novices to tinker with. What mail reader are you using? For example, Apple Mail's "connection doctor" will treat an unofficial certificate as a connection failure; only when you actually try to receive or send mail, will you get a chance to trust the certificate. Perhaps my sarcastic remarks will cause someone to actually fix something. Who knows. yours, David Chase

1 0

STunnel not creating connections.
by Paul Morrison 09 Jan '07

09 Jan '07

I have a problem perhaps someone can help me with. I have setup Stunnel and OpenSSL on a Windows 2003 server. It is configured to accept data on TCP port 2000, decrypt it, then pass it on to TCP port 8014. I have placed the certificates provided for this in a directory and I have told STunnel where these certificates are. The problem I am having is I can see the connection from port 2000 coming in to the system, but STunnel then does nothing before finally dropping the connection. The version of STunnel and OpenSSL are (stunnel 4.15 on x86-pc-mingw32-gnu with OpenSSL 0.9.7i 14 Oct 2005) I have the same setup at a different site on a different server and it works fine. In the debug.log the following is output: 2007.01.09 13:41:02 LOG7[684:352]: MATSU_GPRS started 2007.01.09 13:41:02 LOG7[684:352]: FD 196 in non-blocking mode 2007.01.09 13:41:02 LOG5[684:352]: MATSU_GPRS connected from 212.183.136.192:57511 2007.01.09 13:41:02 LOG7[684:352]: SSL state (accept): before/accept initialization 2007.01.09 13:41:22 LOG3[684:352]: SSL_accept: Peer suddenly disconnected 2007.01.09 13:41:22 LOG5[684:352]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2007.01.09 13:41:22 LOG7[684:352]: MATSU_GPRS finished (0 left) I would normally expect to see details of the SSL connection and the certificates being checked after the line 2007.01.09 13:41:02 LOG7[684:352]: SSL state (accept): before/accept initialization, but as you can see it does nothing before dropping the connection after 20 seconds. Does anyone know why this installation of STunnel does not seem to be attempting to use the certificates provided? I would be very grateful for any advice. P.S. Do I need to have a Certifcate Authority server setup at the site in order for STunnel to work? Paul Morrison IT Support Specialist TS3 Services Ltd Castle Court, Carnegie Campus Dunfermline KY11 8PB TEL: 01383 629900 Mob: 07918078864 EMAIL: Paul.Morrison(a)ts3services.co.uk <BLOCKED::mailto:[email protected]>

1 0

Problem with certificates using smtp /pop
by Klaas 09 Jan '07

09 Jan '07

Isn't there no one who knows how do deal with certificate? > Is there no one who can tell me exactly which part of the > certificate I have to place where and how I must configure > stunnel.conf for the certificate >> I have installed stunnel 4.20 on Windows2003 server and have >> created my private key as follow: >> openssl req -new -days 365 -nodes -config stunnel.cnf -out >> certreq.pem -keyout stunnel.pem >> >> After that I have send certreq.pem to my own CA and have >> received a certnew.cer file. But what I have to do next because >> I still receive the message that the CN-name of the certificate >> is not the same with the given name. >> >> I append this certificate (certnew.cer) to my stunnel.pem file like: >> -----BEGIN RSA PRIVATE KEY----- >> data here >> -----END RSA PRIVATE KEY----- >> -----BEGIN CERTIFICATE----- >> data here >> -----END CERTIFICATE----- >> >> But this doesn't work. Still receive the message that I also read >> on the stunnel.conf must I config something here? >> cert = stunnel.pem >> key = stunnel.pem >> >> ; Authentication stuff >> ;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 you can use CRLfile >> ;CRLfile = crls.pem >> >> Can anyone tell me please what certificate I place where and how config >> the stunnel.conf so I get this working?

1 0

RE: [stunnel-users] URL changes in browser to http from https
by Casey Rayman 08 Jan '07

08 Jan '07

I figured it out. The webserver was redirecting me to the index.html page so that is where the protocol was getting changed. So now the question changes. Is there a function in stunnel for URL rewriting? In otherwords the webserver sends back "redirect yourself to http:// but stunnel intercepts that before it gets back to your browser to keep the connection secure? Thanks, Casey -----Original Message----- From: stunnel-users-bounces(a)mirt.net [mailto:[email protected]] On Behalf Of Casey Rayman Sent: Monday, January 08, 2007 10:10 AM To: stunnel-users(a)mirt.net Subject: [stunnel-users] URL changes in browser to http from https I am just starting to experiment with stunnel on Debian Linux, using the standard debian packages. I've got it working so far accepting requests on the local port 443 and connecting on 80, but when the page loads the URL changes back to a non-secure address. To illustrate: https://192.168.1.10 loads a simple static web page and you get the normal warning for the certificate, but after the page loads the URL changes to http://192/168.1.10 . I thought this might just be IE or something but Firefox does it too. Could I be missing a setting in stunnel? Any ideas? Thank you, Casey _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users

2 1

URL changes in browser to http from https
by Casey Rayman 08 Jan '07

08 Jan '07

I am just starting to experiment with stunnel on Debian Linux, using the standard debian packages. I've got it working so far accepting requests on the local port 443 and connecting on 80, but when the page loads the URL changes back to a non-secure address. To illustrate: https://192.168.1.10 loads a simple static web page and you get the normal warning for the certificate, but after the page loads the URL changes to http://192/168.1.10 . I thought this might just be IE or something but Firefox does it too. Could I be missing a setting in stunnel? Any ideas? Thank you, Casey

1 0

Problem with certificates using smtp /pop
by Klaas 08 Jan '07

08 Jan '07

Is there no one who can tell me exactly which part of the certificate I have to place where and how I must configure stunnel.conf for the certificate

1 0

patch: round robin load balancing
by Luke Deller 08 Jan '07

08 Jan '07

Hi, I noticed that stunnel already does round-robin load balancing of connections when the DNS name specified by the "connect" option resolves to multiple IP addresses. Here is a simple patch which allows the "connect" option to accept a comma separated list of names instead of just a single name. This can be used to load balance tunnelled connections across several servers. For example, to load balance HTTPS connections across 3 HTTP servers (localhost:80, anotherhost:8080 and anotherhost:8081), we could specify: [https] accept = 443 connect = 80,anotherhost:8080,anotherhost:8081 Regards, Luke. ********************************************************************************************** Important Note This email (including any attachments) contains information which is confidential and may be subject to legal privilege. If you are not the intended recipient you must not use, distribute or copy this email. If you have received this email in error please notify the sender immediately and delete this email. Any views expressed in this email are not necessarily the views of XPlan Technology. It is the duty of the recipient to virus scan and otherwise test the information provided before loading onto any computer system. Xplan Technology does not warrant that the information is free of a virus or any other defect or error. **********************************************************************************************

1 0

re: I am clearly doing something wrong
by David Chase 06 Jan '07

06 Jan '07

Foolishly, I trusted it to create /usr/local/var/lib/stunnel/ with the correct permissions. The directory that appeared had these permissions: ls -ld /usr/local/var/lib/stunnel/ drwxrwx--T 2 root wheel 68 Jan 5 16:55 /usr/local/var/lib/stunnel/ When I replaced it with this directory ls -ld /usr/local/var/lib/stunnel/ drwxrwxrwx 3 root wheel 102 Jan 5 20:43 /usr/local/var/lib/stunnel/ Suddenly, when I ran stunnel, it continued to run. I'd call this a bug. Still not doing quite what I want, (not connecting to elsewhere.com like I expect) but I'm closer. David Chase

1 0

I am clearly doing something wrong
by David Chase 05 Jan '07

05 Jan '07

But I think the documentation has some serious gaps in it, too. I compiled stunnel, installed it, created certificates, and even turned on debugging in the configuration file. Now, all I want to do is forward port 443 locally to port 80 elsewhere. Says my config file: cert = /usr/local/etc/stunnel/mail.pem ;key = /usr/local/etc/stunnel/mail.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = SSLv3 ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /usr/local/var/lib/stunnel/ setuid = nobody setgid = nogroup ; PID is created inside chroot jail pid = /stunnel.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log ; Use it for client mode ; client = yes ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 465 connect = 25 [https] accept = 443 connect = elsewhere.com:80 TIMEOUTclose = 0 and when I run it, it says: sudo /usr/local/sbin/stunnel Password: 2007.01.05 18:51:01 LOG7[13470:2684415368]: Snagged 64 random bytes from /Users/chase/.rnd 2007.01.05 18:51:01 LOG7[13470:2684415368]: Wrote 1024 new random bytes to /Users/chase/.rnd 2007.01.05 18:51:01 LOG7[13470:2684415368]: RAND_status claims sufficient entropy for the PRNG 2007.01.05 18:51:01 LOG7[13470:2684415368]: PRNG seeded successfully 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate: /usr/local/ etc/stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: Key file: /usr/local/etc/ stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Private key loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: SSL context initialized for service pop3s 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate: /usr/local/ etc/stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: Key file: /usr/local/etc/ stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Private key loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: SSL context initialized for service imaps 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate: /usr/local/ etc/stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: Key file: /usr/local/etc/ stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Private key loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: SSL context initialized for service ssmtp 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate: /usr/local/ etc/stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Certificate loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: Key file: /usr/local/etc/ stunnel/mail.pem 2007.01.05 18:51:01 LOG7[13470:2684415368]: Private key loaded 2007.01.05 18:51:01 LOG7[13470:2684415368]: SSL context initialized for service https I see nothing that looks like a complaint, but when I go looking for a stunnel process, there is not one, nor is anyone listening on port 443 at localhost. I cannot be the first person who wanted to do this, but I found both the FAQ and the documentation to be uninformative. How do I keep stunnel running and listening for connections on 443? I tried client=yes, that didn't seem to help. I am running Stunnel 4.20 on MacOS 10.4.8 David Chase

1 0

STunnel transparent + Solaris
by Corey Johnston 05 Jan '07

05 Jan '07

The documentation mentions that Solaris should support transparent mode for stunnel, yet I receive bind errors when I try to do this. "bind transparent: Cannot assign requested adddress (126)" Seems to suggest that either its actually not possible, or I've got to include something beyond "transparent = yes" in the conf file, or during compilation. Does anybody know if there's anything else special to make this work? Thanks in advance, Corey

2 1

Red Hat 7.0, Stunnel 4.20, and my Transparent Proxy Woes
by Richard Anderson 03 Jan '07

03 Jan '07

All, I'm attempting to setup Stunnel 4.20 on a RH7.0 box in transparent mode to essentially act as an SSL accelerator. I've gotten the SSL accelerator part to work (which means RH and Stunnel are working fine). But it's when I enable the transparent feature of stunnel I start having problems. The error it returns is : bind transparent: Cannot assign requested address (99) What I know is this: For transparent option to work with stunnel you must be using linux kernel 2.2. (check...red hat 7.0) Transparent proxy option must be enabled in kernel. (check, enabled, recompiled, and booted off that image) IP_FORWARD must be enabled. (check, set this in the sysctl.conf to do it on bootup) But it still won't work. Does anybody have any other ideas as to what I'm missing? thanks, rich _________________________________________________________________ Get FREE Web site and company branded e-mail from Microsoft Office Live http://clk.atdmt.com/MRT/go/mcrssaub0050001411mrt/direct/01/

1 0

Problem with certificates using smtp /pop
by Klaas 29 Dec '06

29 Dec '06

Hello, I have installed stunnel 4.20 on Windows2003 server and have created my private key as follow: openssl req -new -days 365 -nodes -config stunnel.cnf -out certreq.pem -keyout stunnel.pem After that I have send certreq.pem to my own CA and have received a certnew.cer file. But what I have to do next because I still receive the message that the CN-name of the certificate is not the same with the given name. I append this certificate (certnew.cer) to my stunnel.pem file like: -----BEGIN RSA PRIVATE KEY----- data here -----END RSA PRIVATE KEY----- -----BEGIN CERTIFICATE----- data here -----END CERTIFICATE----- But this doesn't work. Still receive the message that I also read on the stunnel.conf must I config something here? cert = stunnel.pem key = stunnel.pem ; Authentication stuff ;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 you can use CRLfile ;CRLfile = crls.pem Can anyone tell me what certificate I place where and how config the stunnel.conf so I get this working?

1 0

Avira Anti-Vir Detects stunnel as virus
by Daniel Tschinder 26 Dec '06

26 Dec '06

I'm using Avira AntiVir (www.free-av.de) and it detects stunnel 4.20 as virus APPL/Stunnel.A . I do not know what to do against it... as you can see in this list, stunnel was added to the signatures Database of AntiVir: http://www.avira.de/en/threats/section/vdfhistory/vdf_no/6.37.00.53/6.37.00… Maybe one of the devs can check back with avira.... best regards, daniel

2 1

Benchmarks
by Michal Trojnara 17 Dec '06

17 Dec '06

Dear Users, I have updated stunnel performance benchmarks: http://stunnel.mirt.net/perf.html I hope you'll find them useful. The funny thing I currently have 2 hardware accelerator cards, but none of them works: - one of them is too obsolete and its proprietary drivers are no longer available; - the other one is too modern and its PCI-X slot does not work with my ASUS P5WDG2 WS Professional motherboard. I'm pretty sure most users won't even be able to utilize the performance provided by software implementation. The bottleneck will most likely be network connection or the destination server performance. Best regards, Mike

1 0

service reconfiguration by SIGHUP
by Matthew Eaton 15 Dec '06

15 Dec '06

Hi, I've created a patch to Stunnel that reloads all accepting connections from the config file. This will not work for privileged ports in the current implementation. Test at your own risk :) Feedback welcome. Best regards, Matthew diff -urb stunnel-orig/stunnel-4.20/src/stunnel.c stunnel-4.20/src/stunnel.c --- stunnel-orig/stunnel-4.20/src/stunnel.c 2006-11-30 15:47:45.000000000 -0500 +++ stunnel-4.20/src/stunnel.c 2006-12-12 03:34:36.000000000 -0500 @@ -53,12 +53,12 @@ #endif int volatile num_clients=0; /* Current number of clients */ +int volatile conf_updated=0; /* Conf updated ? */ /* Functions */ #ifndef USE_WIN32 int main(int argc, char* argv[]) { /* execution begins here 8-) */ - main_initialize(argc>1 ? argv[1] : NULL, argc>2 ? argv[2] : NULL); signal(SIGPIPE, SIG_IGN); /* avoid 'broken pipe' signal */ @@ -78,12 +78,17 @@ } #endif +char *cfg_arg1 = NULL; +char *cfg_arg2 = NULL; + void main_initialize(char *arg1, char *arg2) { ssl_init(); /* initialize SSL library */ sthreads_init(); /* initialize critical sections & SSL callbacks */ parse_config(arg1, arg2); log_open(); stunnel_info(0); + cfg_arg1 = arg1; + cfg_arg2 = arg2; } void main_execute(void) { @@ -105,6 +110,7 @@ SOCKADDR_UNION addr; s_poll_set fds; LOCAL_OPTIONS *opt; + int i; get_limits(); s_poll_zero(&fds); #if !defined(USE_WIN32) && !defined(USE_OS2) @@ -173,6 +179,42 @@ accept_connection(opt); } + if(conf_updated) { + for(i=0; i<fds.nfds; i++) + close(fds.ufds[i].fd); + + /* re-bind local ports */ + for(opt=local_options.next; opt; opt=opt->next) { + if(!opt->option.accept) /* no need to bind this service */ + continue; + memcpy(&addr, &opt->local_addr.addr[0], sizeof(SOCKADDR_UNION)); + if((opt->fd=socket(addr.sa.sa_family, SOCK_STREAM, 0))<0) { + sockerror("local socket"); + exit(1); + } + if(alloc_fd(opt->fd)) + exit(1); + if(set_socket_options(opt->fd, 0)<0) + exit(1); + s_ntop(opt->local_address, &addr); + if(bind(opt->fd, &addr.sa, addr_len(addr))) { + s_log(LOG_ERR, "Error binding %s to %s", + opt->servname, opt->local_address); + sockerror("bind"); + exit(1); + } + s_log(LOG_DEBUG, "%s bound to %s", opt->servname, opt->local_address); + if(listen(opt->fd, 5)) { + sockerror("listen"); + exit(1); + } +#ifdef FD_CLOEXEC + fcntl(opt->fd, F_SETFD, FD_CLOEXEC); /* close socket in child execvp */ +#endif + s_poll_add(&fds, opt->fd, 1, 0); + } + conf_updated = 0; + } } s_log(LOG_ERR, "INTERNAL ERROR: End of infinite loop 8-)"); } @@ -413,9 +455,16 @@ } static void signal_handler(int sig) { /* signal handler */ + if((sig==SIGHUP) && local_options.next) { /* only in service mode */ + s_log(LOG_NOTICE, "Re-reading configuration"); + parse_config(cfg_arg1, cfg_arg2); + conf_updated = 1; + } + else { s_log(sig==SIGTERM ? LOG_NOTICE : LOG_ERR, "Received signal %d; terminating", sig); exit(3); + } } #endif /* !defined USE_WIN32 */

1 2

stunnel patch to support URL lookups for parameters (take 2)
by Dan Jakubiec 13 Dec '06

13 Dec '06

Attached is a patch which extends the "connect=" and "CApath=" options to allow these parameters to be obtained dynamically at connect-time via a URL lookup, rather than statically from the stunnel configuration file. It is a generalization of an earlier patch to 4.04 submitted by Jan Piet-Mens which does something similar using LDAP lookups. Feedback is appreciated! Here is a summary of the functionality, along with some notes: 1. The patch was written to allow stunnel to dynamically route and authenticate incoming connections based on parameters found in the client's certificate. 2. Routing and authentication information is obtained by issuing a URL lookup, so the information can be obtained from a variety of local or remote sources. 3. It is particularly useful in high-volume, load-balancing scenarios where many copies of stunnel are running on multiple front-end servers. It allows the destination socket and client certificate verification info to be obtained on-the-fly from a centralized database. 4. Although primarily intended for use with HTTP, this patch uses the libcurl URL library and should work with all of its supported protocols: HTTP, HTTPS, FTP, FTPS, TFTP, DICT, TELNET, LDAP or FILE. As a brief example, an end-user might configure their stunnel as follows: cert = id.pem verify = 2 CApath = ca_dir CAlookup = http://database.stunnel.org/map_client.php?hash=%h [dynamic] accept = 50000 connect = @http://database.stunnel.org/map_client.php?common_name=%n In this scenario, an incoming stunnel connection would obtain it's connect info from database.stunnel.org by sending an HTTP request and passing the common name found in the client certificate. Similarly, the client's certificate would be verified using CA certificates obtained via HTTP lookup to the same host. Comments are appreciated. Thanks, Dan Jakubiec

1 0

stunnel patch to support URL lookups for parameters
by Dan Jakubiec 13 Dec '06

13 Dec '06

Attached is a patch which extends the "connect=" and "CApath=" options to allow these parameters to be obtained dynamically at connect-time via a URL lookup, rather than statically from the stunnel configuration file. It is a generalization of an earlier patch to 4.04 submitted by Jan Piet-Mens which does something similar using LDAP lookups. Feedback is appreciated! Here is a summary of the functionality, along with some notes: 1. The patch was written to allow stunnel to dynamically route and authenticate incoming connections based on parameters found in the client's certificate. 2. Routing and authentication information is obtained by issuing a URL lookup, so the information can be obtained from a variety of local or remote sources. 3. It is particularly useful in high-volume, load-balancing scenarios where many copies of stunnel are running on multiple front-end servers. It allows the destination socket and client certificate verification info to be obtained on-the-fly from a centralized database. 4. Although primarily intended for use with HTTP, this patch uses the libcurl URL library and should work with all of its supported protocols: HTTP, HTTPS, FTP, FTPS, TFTP, DICT, TELNET, LDAP or FILE. As a brief example, an end-user might configure their stunnel as follows: cert = id.pem verify = 2 CApath = ca_dir CAlookup = http://database.stunnel.org/map_client.php?hash=%h <http://database.stunnel.org/map_client.php?hash=%25h> [dynamic] accept = 50000 connect = @http://database.stunnel.org/map_client.php?common_name=%n<http://database.stunnel.org/map_client.php?common_name=%25n> In this scenario, an incoming stunnel connection would obtain it's connect info from database.stunnel.org by sending an HTTP request and passing the common name found in the client certificate. Similarly, the client's certificate would be verified using CA certificates obtained via HTTP lookup to the same host. Comments are appreciated. Thanks, Dan Jakubiec

1 0

Re: [stunnel-users] service reconfiguration by SIGHUP
by Hans Werner Strube 13 Dec '06

13 Dec '06

Matthew Eaton wrote: > I've created a patch to Stunnel that reloads all accepting connections > from the config file. This will not work for privileged ports in the > current implementation. Please explain why it will not work for privileged ports. Does this hold even if the master stunnel process runs as root? And what happens to active connections on SIGHUP? Are they simply broken?

2 1

Re: [stunnel-users] STunnel performance Issues
by Michal Trojnara 11 Dec '06

11 Dec '06

"Jones Scott - sjones" <Scott.Jones(a)acxiom.com> wrote: > But during load testing the system starts breaking down. It takes about > 1/5 the load to break down apache and stunnel, than directly against my > jboss node. Could you elaborate on "break down", please? Is there an error? A core dump? What is the error message? A core dump stack backtrace? First performance recommendation is to disable libwrap support: ./configure --disable-libwrap && make clean && make && make install Best regards, Mike

1 0

STunnel performance Issues
by Jones Scott - sjones 11 Dec '06

11 Dec '06

I am having problems will apache and stunnel being able to handle load. I am using stunnel to encrypt my ajp traffic from apache to jboss. This helps me bridge our internal firewall. But during load testing the system starts breaking down. It takes about 1/5 the load to break down apache and stunnel, than directly against my jboss node. Any performance tuning recommendations would be great. I am using stunnel straight out of the box. I will place the configuration file below. Thanks. ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode ;cert = /usr/local/stunnel/etc/stunnel/mail.pem ;key = /usr/local/stunnel/etc/stunnel/mail.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = SSLv3 ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /usr/local/stunnel/var/lib/stunnel/ setuid = nobody setgid = nogroup ; PID is created inside chroot jail pid = /stunnel.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; 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 = certificates ; It's often easier to use CAfile CAfile = /usr/local/stunnel/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 = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting ;debug = 7 output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [ajp] accept = 8009 connect = xxxx2:8009 [sql] accept = 1433 connect = XXXX1:443 *************************************************************************** The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. ****************************************************************************

1 0

SSL_accept: Peer suddenly disconnected
by James Brown 08 Dec '06

08 Dec '06

I'm trying to send an email through stunnel (which is running on the mail server), but I keep getting an error. $ sudo /usr/local/sbin/stunnel 2006.12.07 15:35:27 LOG7[6092:2684407744]: Snagged 64 random bytes from /Users/jlbrown/.rnd 2006.12.07 15:35:27 LOG7[6092:2684407744]: Wrote 1024 new random bytes to /Users/jlbrown/.rnd 2006.12.07 15:35:27 LOG7[6092:2684407744]: RAND_status claims sufficient entropy for the PRNG 2006.12.07 15:35:27 LOG7[6092:2684407744]: PRNG seeded successfully 2006.12.07 15:35:27 LOG7[6092:2684407744]: Certificate: /etc/postfix/ smtpd.cert 2006.12.07 15:35:27 LOG7[6092:2684407744]: Certificate loaded 2006.12.07 15:35:27 LOG7[6092:2684407744]: Key file: /etc/postfix/ smtpd.key 2006.12.07 15:35:27 LOG7[6092:2684407744]: Private key loaded 2006.12.07 15:35:27 LOG7[6092:2684407744]: SSL context initialized for service ssmtp 2006.12.07 15:35:27 LOG5[6092:2684407744]: stunnel 4.19 on i686-apple- darwin8.8.1 with OpenSSL 0.9.7l 28 Sep 2006 2006.12.07 15:35:27 LOG5[6092:2684407744]: Threading:PTHREAD SSL:ENGINE Sockets:SELECT,IPv4 Auth:LIBWRAP 2006.12.07 15:35:27 LOG6[6092:2684407744]: file ulimit = 256 (can be changed with 'ulimit -n') 2006.12.07 15:35:27 LOG6[6092:2684407744]: FD_SETSIZE = 1024 (some systems allow to increase this value) 2006.12.07 15:35:27 LOG5[6092:2684407744]: 125 clients allowed 2006.12.07 15:35:27 LOG7[6092:2684407744]: FD 6 in non-blocking mode 2006.12.07 15:35:27 LOG7[6092:2684407744]: FD 7 in non-blocking mode 2006.12.07 15:35:27 LOG7[6092:2684407744]: FD 8 in non-blocking mode 2006.12.07 15:35:27 LOG7[6092:2684407744]: SO_REUSEADDR option set on accept socket 2006.12.07 15:35:27 LOG7[6092:2684407744]: ssmtp bound to 0.0.0.0:465 2006.12.07 15:35:27 LOG7[6093:2684407744]: Created pid file /usr/ local/var/run/stunnel/stunnel.pid 2006.12.07 15:35:52 LOG7[6093:2684407744]: ssmtp accepted FD=9 from 192.168.1.4:62929 2006.12.07 15:35:52 LOG7[6093:25188864]: ssmtp started 2006.12.07 15:35:52 LOG7[6093:25188864]: FD 9 in non-blocking mode 2006.12.07 15:35:52 LOG7[6093:25188864]: TCP_NODELAY option set on local socket 2006.12.07 15:35:52 LOG7[6093:25188864]: FD 10 in non-blocking mode 2006.12.07 15:35:52 LOG7[6093:25188864]: FD 11 in non-blocking mode 2006.12.07 15:35:52 LOG7[6093:25188864]: Connection from 192.168.1.4:62929 permitted by libwrap 2006.12.07 15:35:52 LOG7[6093:2684407744]: Cleaning up the signal pipe 2006.12.07 15:35:52 LOG5[6093:25188864]: ssmtp accepted connection from 192.168.1.4:62929 2006.12.07 15:35:52 LOG6[6093:2684407744]: Child process 6094 finished with code 0 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): before/ accept initialization 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): SSLv3 read client hello A 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): SSLv3 write server hello A 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): SSLv3 write certificate A 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): SSLv3 write server done A 2006.12.07 15:35:52 LOG7[6093:25188864]: SSL state (accept): SSLv3 flush data 2006.12.07 15:35:52 LOG3[6093:25188864]: SSL_accept: Peer suddenly disconnected 2006.12.07 15:35:52 LOG5[6093:25188864]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2006.12.07 15:35:52 LOG7[6093:25188864]: ssmtp finished (0 left) My stunnel.conf is: cert = /etc/postfix/smtpd.cert key = /etc/postfix/smtpd.key sslVersion = all socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 output = /var/log/stunnel.log [ssmtp] client = no accept = 465 connect = 25 Does this mean that the SMTP proxy listening on port 25 is not accepting the connection from stunnel? Thanks, James.

2 4

Installing stunnel without need a compiler
by Boxall, John 05 Dec '06

05 Dec '06

Mike et al, I want to be able to automate the installation of stunnel in the same manner that I've already automated our openssh installation, however, I've run into a problem (lack of knowledge) with the "make install" step. This is for Solaris (2.5.1 to 10) and AIX (5.1 to 5.3). I'm not quite ready to create the packages in either Solaris (pkg) or AIX (rpm) formats. At a high level, here is what I would like to achieve: - On a build server (per OS version) - transfer all of the necessary stuff (gcc, openssl, stunnel source, etc.) - install the necessary stuff (gcc, openssl, etc.) - un'tar the stunnel package - run configure (with the appropriate options and paths) - run "make" - tar the stunnel directory & transfer it to a holding system - Put together the necessary pieces on the holding system to install stunnel on all targets. - On a target system (per OS version) - transfer all of the necessary stuff (libgcc, openssl, tar'ed stunnel directory, etc.) - install the necessary stuff (libgcc, openssl, zlib, etc.) - un-tar the stunnel file - run "make install" Using the same flow with our openssh packages, I do not have to install a compiler (gcc) and its support packages. What, if anything, can I do with the stunnel installation to not have to install a compiler? Regards, John Boxall

2 1