stunnel-users

3 participants
3308 discussions

Peer suddenly disconnected
by victor.harutyunyan＠arca.am 02 Jul '08

02 Jul '08

Hello there, I have installed stunnel server on FreeBSD. I configure it like this cert=server_cert.pem key=private\server_key.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 verify=2 CAfile=test_cert.pem [ssl_host_proxy] accept=172.24.150.15:1234 connect=192.168.1.1:10500 TIMEOUTidle=120 Client side is not a computer it's small device. I generate client certificates in this manor: echo off del test_ck.pem /q # delete previous test.ck.pem file echo Starting New test_ck file Generation C:\OpenSSL\bin\openssl.exe req -new -x509 -newkey rsa:2048 -sha1 -out test_cert.pem -keyout test_key.pem -nodes -config sample_ck.cnf -days 1825 -batch C:\OpenSSL\bin\openssl.exe pkcs8 -in test_key.pem -topk8 -out test_pk8.pem -passout pass:"TestPassword0001" -noiter -v1 PBE-SHA1-3DES del test_key.pem /q copy test_cert.pem+test_pk8.pem test_ck.pem /y del test_pk8.pem /q Echo New test_ck.pem file has the following sections: findstr "BEGIN END" test_ck.pem pause test_cert.pem is on a stunnel server as CAfile and test_ck.pem is on my small device which is capable to connect via stunnel. And I generate other self-signed CA, and generate one certificate request and sign it via this CA, and install that key and certificate on server. cert=server_cert.pem key=private\server_key.pem All is working fine, but after one year my server certificate has expired, when I regenerate new server certificate and try to connect, I see in server log this: Child process 6094 finished with code 0 SSL state (accept): before accept initialization SSL state (accept): SSLv3 read client hello A SSL state (accept): SSLv3 write server hello A SSL state (accept): SSLv3 write certificate A SSL state (accept): SSLv3 write server done A SSL state (accept): SSLv3 flush data SSL_accept: Peer suddenly disconnected And my device can't connect to the server, I haven't any client side logs and error messages, only NOT DELIVERED in my device. :( Can you please help me to solve this problem, I am trying many many times, I was very angry.. Thank you very much. Victor Harutyunyan. P.S. Sorry for my bad english.

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Peer suddenly disconnected
by victor.harutyunyan＠arca.am 02 Jul '08

02 Jul '08

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socket not getting closed
by Manjunath S Karikatti 02 Jul '08

02 Jul '08

Hello, We are using stunnel to wrap the tcp connetion between the our client session used by users and the server process. Due to some reason when client session terminates abruptly (either due to user's PC crash or network outage) the stunnel process does not terminate. We see that the socket on client PC is closed but stunnel process is still alive with socket for that PC in established state. This is on AIX platform. Do not know this is issue with stunnel process or something on AIX needs to be tuned (like the tcp_keepidle value). Thanks for any info and help. Thanks and Regards, Manjunath

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Re: [stunnel-users] Stunnel 4.21 99% cpu ultilization
by Fat Wallet 01 Jul '08

01 Jul '08

Thanks for your reply. I was hoping to see if someone have a similar issue since there was an issue with stunnel 4.20 version. Thanks, Mike ----- Original Message ---- From: Aron Griffis <agriffis(a)n01se.net> To: Fat Wallet <fat8wallet(a)yahoo.com> Cc: stunnel-users(a)mirt.net Sent: Monday, June 30, 2008 11:04:44 AM Subject: Re: [stunnel-users] Stunnel 4.21 99% cpu ultilization Fat Wallet wrote: [Mon Jun 30 2008, 01:28:11PM EDT] > Can someone please help with this issue? This 100% cpu > utilization issue happens randomly on multiprocess cpu. strace, ltrace, build stunnel with debugging symbols and attach gdb to the spinning process, etc. Is your name really Fat Wallet?

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Stunnel v4.25 vs v4.20
by James Moe 30 Jun '08

30 Jun '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, I upgraded to v4.25 and stunnel aborts right away. v4.20 works just fine. What is protocol family 47? ====[ log file ]==== 2008.06.26 11:31:01 LOG5[282:8553]: stunnel 4.25 on i386-pc-os2-emx with OpenSSL 0.9.8h 28 May 2008 2008.06.26 11:31:01 LOG5[282:8553]: Threading: SSL:ENGINE Sockets:SELECT,IPv4 2008.06.26 11:31:01 LOG3[282:8553]: Error binding pop3.sma.com_L110-R995 to 127.0.0.1:110 2008.06.26 11:31:01 LOG3[282:8553]: bind: Address family not supported by protocol family (47) ====[ conf file ]==== socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 client = yes output = G:/c/voice/pmmdev/testcase/bin/stunnel.log verify = 0 debug = 5 cert = g:/c/voice/pmmdev/testcase/bin/sma-test.pem [pop3.sma.com_L110-R995] accept = localhost:110 connect = pop3.sma.com:995 ;# protocol = pop3 [smtpauth.earthlink.net_L6025-R587] accept = localhost:6025 connect = smtpauth.earthlink.net:587 protocol = smtp [sohnen-moe.com:L6125:R587] accept = localhost:6125 connect = sohnen-moe.com:587 protocol = smtp [smtp.sma.com_L25-R587] accept = localhost:25 connect = smtp.sma.com:587 protocol = smtp - -- jimoe (at) sohnen-moe (dot) com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (OS/2) iD8DBQFIY+DkzTcr8Prq0ZMRArW+AJ4uOJFOGyluIj52DG4cM62jMPs8NACfbug2 oVsLAXJ+fH1Raj568dGn2mM= =JSCM -----END PGP SIGNATURE-----

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Re: [stunnel-users] Stunnel 4.21 99% cpu ultilization
by Fat Wallet 30 Jun '08

30 Jun '08

Hi, Can someone please help with this issue? This 100% cpu utilization issue happens randomly on multiprocess cpu. Thanks! ----- Original Message ---- From: Fat Wallet <fat8wallet(a)yahoo.com> To: stunnel-users(a)mirt.net Sent: Monday, June 23, 2008 10:39:16 AM Subject: Stunnel 4.21 99% cpu ultilization Hi All, I've been googling for this issue but it seems like google is not my friend at the moment. I am running Linux with 4 cpus and top command shows stunnel at 99-100% cpu. Please help. //stunnel configuration file # PID is created inside chroot jail pid = /var/run/stunnel.pid # debug debug = 7 output = /var/log/stunnel.log # Authentication stuff verify = 2 cert = /etc/stunnel/cert.pem CAfile = /etc/stunnel/ca.pem #Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 # Use it for client mode client = yes /////////// stunnel version stunnel 4.21 on i686-pc-linux-gnu with OpenSSL 0.9.7a Feb 19 2003 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Global options debug = 5 pid = /var/run/stunnel.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /etc/stunnel/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /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 //openssl version OpenSSL 0.9.7a Feb 19 2003 //Redhat version Red Hat Linux release 9 (Shrike) root]#cat /proc/cpuinfo | grep processor | wc -l 4 http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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UPNP & Nat-PMP with Stunnel
by Dean Shavit 25 Jun '08

25 Jun '08

Stunnel works great for me, but with dynamic port forwarding, I've not been able to get it working. I suspect it's because stunnel is a bit confusing about which port to reply to... Anyone else found a way to crack this nut?

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How do I kill stunnel?
by Grant Edwards 25 Jun '08

25 Jun '08

I've got an application that starts stunnel using equivalent of a fork/exec. The stunnel process then appears to fork off multiple copies of itself. Before the application exits, it needs to stop stunnel. I send a SIGINT to the PID that was created using the fork, but only the first "master" copy terminates -- the master stunnel process doesn't terminate its children when it exits. So I end up with a bunch of "orphaned" stunnel processes. They're not zombies, they're process that are either in state R or S (runnable or sleeping). How do I tell stunnel to not only terminate, but to terminate whatever child processes it has created? -- Grant Edwards grante Yow! Zippy's brain cells at are straining to bridge visi.com synapses ...

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Stunnel config files incompatible between 4.05 and 4.21 ?
by Brian McKee 25 Jun '08

25 Jun '08

Hi All, I have a stunnel config file that works fine on an older Mandrake machine running stunnel 4.05. If I use that same config file on a new Ubuntu machine running 4.21 it just dies with "/etc/stunnel/stunnel.pem: No such file or directory" IIUC, running in client mode it doesn't need a .pem file, and I didn't create any certifcates on the Mandrake machines. Do I need to generate a cert for some reason? I've attached the config below. Brian =============================== client = yes [telnet] accept = 23 connect = some.ip.number.removed:992 [as-central] accept = 8470 connect = some.ip.number.removed:9470 [as-database] accept = 8471 connect = some.ip.number.removed:9471 [as-rmtcmd] accept = 8475 connect = some.ip.number.removed:9475

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Is the "HTTP Proxy connect" feature implemented?
by alex Wright 24 Jun '08

24 Jun '08

Hey, I'm trying to use stunnel in the following scenerio: ssh-client -> stunnel (to ssl) -> Proxy -> server(ssl to ssh). I downloaded stunnel 4.25, but I hadn't noiticed any support for this. However, in the "patches" page (http://www.stunnel.org/patches/) - three patches seem to be suitable: (connect-proxy_dunbar.patch<http://www.stunnel.org/patches/patches/connect-proxy_dunbar.patch>, connect-proxy.mwald.patch<http://www.stunnel.org/patches/patches/connect-proxy.mwald.patch>) but are for version 4.05 (whichwill probably be a pain to merge with current version). When I stumbled upon the Changelog ( http://www.stunnel.org/download/ChangeLog.txt) I noticed that version 4.15, has support for "Client mode CONNECT protocol" - which is what I need - and altough i had looked hard, I haven't found any documentation to it. So, is the above feature what I want (and if so - how do I use it?) or do I need to update the patches to the current version? Thanks in advance, Alex.

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