January 2010 - stunnel-users

PKI certs
by Lendl, Daniel 13 Jan '10

13 Jan '10

Will stunnel will work with PKI certs vs self-signed? Dan Lendl 919-257-3062

2 1

Stunnel and RTMPS
by Nimrod Aviram 11 Jan '10

11 Jan '10

Hi, I'm currently trying to use rtmps, with Red5 and Stunnel, and it doesn't work with properly signed certificates: When I use a self-signed test certificate, everything works just fine. But when I use a proper certificate (2048 bits from godaddy.com, if that matters), NetConnection.connect just doesn't work - the server doesn't get a connection. https stil works though, and the browser treats the certificate as valid, so it's probably not a problem with the certificate. I saw some earlier posts on this problem, does anyone have a solution? Any comments are welcome... thanks, Nimrod

2 1

server refuses connection by STARTTLS
by Tsurutani Naoki 10 Jan '10

10 Jan '10

Hi, I want to connect to SMTP server by STARTTLS, from MUA who does not support STARTTLS. However, I cannot connect to the server with recent stunnel. On Windows XP, my stunnel.conf is the following: client=yes debug=notice output=C:\logs\stunnel.log service=stunnel [smtp_server] accept=127.0.0.1:10025 connect=smtp.example.com:587 protocol=smtp stunnel version 4.27 or 4.29 is started as service, by "C:\Network\stunnel\stunnel.exe" -service -install c:\home\turutani\INI\stunnel.conf I cannot connect with OpenSSL distributed via stunnel. Then I changed the OpenSSL DLL, and found that I can connect with OpenSSL older than 0.9.8i, while that newer than 0.9.8j fails. But it works by adding "sslVersion=all" or "sslVersion=SSLv2" to configuration file. I also ran stunnel on FreeBSD, and found the same result about SSL version. Here is a debug level log, with no "sslVersion=" or "sslVersion=SSLv3": 2010.01.08 09:50:06 LOG7[2372:3760]: RAND_status claims sufficient entropy for the PRNG 2010.01.08 09:50:06 LOG7[2372:3760]: PRNG seeded successfully 2010.01.08 09:50:06 LOG7[2372:3760]: SSL context initialized for service smtp_server 2010.01.08 09:50:06 LOG5[2372:3760]: stunnel 4.28 on x86-pc-mingw32-gnu with OpenSSL 0.9.8l 5 Nov 2009 2010.01.08 09:50:06 LOG5[2372:3760]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2010.01.08 09:50:06 LOG5[2372:2252]: No limit detected for the number of clients 2010.01.08 09:50:06 LOG7[2372:2252]: FD 236 in non-blocking mode 2010.01.08 09:50:06 LOG7[2372:2252]: SO_REUSEADDR option set on accept socket 2010.01.08 09:50:06 LOG7[2372:2252]: smtp_server bound to 127.0.0.1:10025 2010.01.08 09:50:34 LOG7[2372:2252]: smtp_server accepted FD=244 from 127.0.0.1:1953 2010.01.08 09:50:34 LOG7[2372:2252]: Creating a new thread 2010.01.08 09:50:34 LOG7[2372:2252]: New thread created 2010.01.08 09:50:34 LOG7[2372:1036]: smtp_server started 2010.01.08 09:50:34 LOG7[2372:1036]: FD 244 in non-blocking mode 2010.01.08 09:50:34 LOG5[2372:1036]: smtp_server accepted connection from 127.0.0.1:1953 2010.01.08 09:50:34 LOG7[2372:1036]: FD 268 in non-blocking mode 2010.01.08 09:50:34 LOG6[2372:1036]: connect_blocking: connecting 133.x.y.z:587 2010.01.08 09:50:34 LOG7[2372:1036]: connect_blocking: s_poll_wait 133.x.y.z:587: waiting 10 seconds 2010.01.08 09:50:34 LOG5[2372:1036]: connect_blocking: connected 133.x.y.z:587 2010.01.08 09:50:34 LOG5[2372:1036]: smtp_server connected remote server from 192.168.3.118:1954 2010.01.08 09:50:34 LOG7[2372:1036]: Remote FD=268 initialized 2010.01.08 09:50:34 LOG5[2372:1036]: Negotiations for smtp (client side) started 2010.01.08 09:50:37 LOG7[2372:1036]: <- 220 smtp.example.com ESMTP Postfix 2010.01.08 09:50:37 LOG7[2372:1036]: -> 220 smtp.example.com ESMTP Postfix 2010.01.08 09:50:37 LOG7[2372:1036]: -> EHLO localhost 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-smtp.example.com 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-PIPELINING 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-SIZE 51200000 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-VRFY 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-ETRN 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250-STARTTLS 2010.01.08 09:50:37 LOG7[2372:1036]: <- 250 8BITMIME 2010.01.08 09:50:37 LOG7[2372:1036]: -> STARTTLS 2010.01.08 09:50:37 LOG7[2372:1036]: <- 220 Ready to start TLS 2010.01.08 09:50:37 LOG5[2372:1036]: Protocol negotiations succeeded 2010.01.08 09:50:37 LOG7[2372:1036]: SSL state (connect): before/connect initialization 2010.01.08 09:50:37 LOG7[2372:1036]: SSL state (connect): SSLv3 write client hello A 2010.01.08 09:50:40 LOG3[2372:1036]: SSL_connect: Peer suddenly disconnected 2010.01.08 09:50:40 LOG5[2372:1036]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2010.01.08 09:50:40 LOG7[2372:1036]: smtp_server finished (0 left) with "sslVersion=all", 2010.01.08 09:45:33 LOG7[2664:3880]: RAND_status claims sufficient entropy for the PRNG 2010.01.08 09:45:33 LOG7[2664:3880]: PRNG seeded successfully 2010.01.08 09:45:34 LOG7[2664:3880]: SSL context initialized for service smtp_server 2010.01.08 09:45:34 LOG5[2664:3880]: stunnel 4.28 on x86-pc-mingw32-gnu with OpenSSL 0.9.8l 5 Nov 2009 2010.01.08 09:45:34 LOG5[2664:3880]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2010.01.08 09:45:34 LOG5[2664:2408]: No limit detected for the number of clients 2010.01.08 09:45:34 LOG7[2664:2408]: FD 236 in non-blocking mode 2010.01.08 09:45:34 LOG7[2664:2408]: SO_REUSEADDR option set on accept socket 2010.01.08 09:45:34 LOG7[2664:2408]: smtp_server bound to 127.0.0.1:10025 2010.01.08 09:46:05 LOG7[2664:2408]: smtp_server accepted FD=244 from 127.0.0.1:1944 2010.01.08 09:46:05 LOG7[2664:2408]: Creating a new thread 2010.01.08 09:46:05 LOG7[2664:2408]: New thread created 2010.01.08 09:46:05 LOG7[2664:2968]: smtp_server started 2010.01.08 09:46:05 LOG7[2664:2968]: FD 244 in non-blocking mode 2010.01.08 09:46:05 LOG5[2664:2968]: smtp_server accepted connection from 127.0.0.1:1944 2010.01.08 09:46:05 LOG7[2664:2968]: FD 268 in non-blocking mode 2010.01.08 09:46:05 LOG6[2664:2968]: connect_blocking: connecting 133.x.y.z:587 2010.01.08 09:46:05 LOG7[2664:2968]: connect_blocking: s_poll_wait 133.x.y.z:587: waiting 10 seconds 2010.01.08 09:46:05 LOG5[2664:2968]: connect_blocking: connected 133.x.y.z:587 2010.01.08 09:46:05 LOG5[2664:2968]: smtp_server connected remote server from 192.168.3.118:1945 2010.01.08 09:46:05 LOG7[2664:2968]: Remote FD=268 initialized 2010.01.08 09:46:05 LOG5[2664:2968]: Negotiations for smtp (client side) started 2010.01.08 09:46:05 LOG7[2664:2968]: <- 220 smtp.example.com ESMTP Postfix 2010.01.08 09:46:05 LOG7[2664:2968]: -> 220 smtp.example.com ESMTP Postfix 2010.01.08 09:46:05 LOG7[2664:2968]: -> EHLO localhost 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-smtp.example.com 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-PIPELINING 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-SIZE 51200000 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-VRFY 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-ETRN 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250-STARTTLS 2010.01.08 09:46:05 LOG7[2664:2968]: <- 250 8BITMIME 2010.01.08 09:46:05 LOG7[2664:2968]: -> STARTTLS 2010.01.08 09:46:05 LOG7[2664:2968]: <- 220 Ready to start TLS 2010.01.08 09:46:05 LOG5[2664:2968]: Protocol negotiations succeeded 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): before/connect initialization 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv2/v3 write client hello A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 read server hello A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 read server certificate A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 read server key exchange A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 read server done A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 write client key exchange A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 write change cipher spec A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 write finished A 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 flush data 2010.01.08 09:46:05 LOG7[2664:2968]: SSL state (connect): SSLv3 read finished A 2010.01.08 09:46:05 LOG7[2664:2968]: 1 items in the session cache 2010.01.08 09:46:05 LOG7[2664:2968]: 1 client connects (SSL_connect()) 2010.01.08 09:46:05 LOG7[2664:2968]: 1 client connects that finished 2010.01.08 09:46:05 LOG7[2664:2968]: 0 client renegotiations requested 2010.01.08 09:46:05 LOG7[2664:2968]: 0 server connects (SSL_accept()) 2010.01.08 09:46:05 LOG7[2664:2968]: 0 server connects that finished 2010.01.08 09:46:05 LOG7[2664:2968]: 0 server renegotiations requested 2010.01.08 09:46:05 LOG7[2664:2968]: 0 session cache hits 2010.01.08 09:46:05 LOG7[2664:2968]: 0 external session cache hits 2010.01.08 09:46:05 LOG7[2664:2968]: 0 session cache misses 2010.01.08 09:46:05 LOG7[2664:2968]: 0 session cache timeouts 2010.01.08 09:46:05 LOG6[2664:2968]: SSL connected: new session negotiated 2010.01.08 09:46:05 LOG6[2664:2968]: Negotiated ciphers: DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1 2010.01.08 09:46:05 LOG7[2664:2968]: SSL socket closed on SSL_read 2010.01.08 09:46:05 LOG7[2664:2968]: Socket write shutdown 2010.01.08 09:46:05 LOG5[2664:2968]: Connection closed: 625 bytes sent to SSL, 286 bytes sent to socket 2010.01.08 09:46:05 LOG7[2664:2968]: smtp_server finished (0 left) 2010.01.08 09:50:06 LOG7[2372:3760]: RAND_status claims sufficient entropy for the PRNG with "sslVersion=SSLv2", 2010.01.08 09:50:50 LOG7[2692:3460]: RAND_status claims sufficient entropy for the PRNG 2010.01.08 09:50:50 LOG7[2692:3460]: PRNG seeded successfully 2010.01.08 09:50:50 LOG7[2692:3460]: SSL context initialized for service smtp_server 2010.01.08 09:50:50 LOG5[2692:3460]: stunnel 4.28 on x86-pc-mingw32-gnu with OpenSSL 0.9.8l 5 Nov 2009 2010.01.08 09:50:50 LOG5[2692:3460]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2010.01.08 09:50:50 LOG5[2692:2496]: No limit detected for the number of clients 2010.01.08 09:50:50 LOG7[2692:2496]: FD 236 in non-blocking mode 2010.01.08 09:50:50 LOG7[2692:2496]: SO_REUSEADDR option set on accept socket 2010.01.08 09:50:50 LOG7[2692:2496]: smtp_server bound to 127.0.0.1:10025 2010.01.08 09:51:04 LOG7[2692:2496]: smtp_server accepted FD=244 from 127.0.0.1:1955 2010.01.08 09:51:04 LOG7[2692:2496]: Creating a new thread 2010.01.08 09:51:04 LOG7[2692:2496]: New thread created 2010.01.08 09:51:04 LOG7[2692:2056]: smtp_server started 2010.01.08 09:51:04 LOG7[2692:2056]: FD 244 in non-blocking mode 2010.01.08 09:51:04 LOG5[2692:2056]: smtp_server accepted connection from 127.0.0.1:1955 2010.01.08 09:51:04 LOG7[2692:2056]: FD 268 in non-blocking mode 2010.01.08 09:51:04 LOG6[2692:2056]: connect_blocking: connecting 133.x.y.z:587 2010.01.08 09:51:04 LOG7[2692:2056]: connect_blocking: s_poll_wait 133.x.y.z:587: waiting 10 seconds 2010.01.08 09:51:04 LOG5[2692:2056]: connect_blocking: connected 133.x.y.z:587 2010.01.08 09:51:04 LOG5[2692:2056]: smtp_server connected remote server from 192.168.3.118:1956 2010.01.08 09:51:04 LOG7[2692:2056]: Remote FD=268 initialized 2010.01.08 09:51:04 LOG5[2692:2056]: Negotiations for smtp (client side) started 2010.01.08 09:51:04 LOG7[2692:2056]: <- 220 smtp.example.com ESMTP Postfix 2010.01.08 09:51:04 LOG7[2692:2056]: -> 220 smtp.example.com ESMTP Postfix 2010.01.08 09:51:04 LOG7[2692:2056]: -> EHLO localhost 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-smtp.example.com 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-PIPELINING 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-SIZE 51200000 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-VRFY 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-ETRN 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250-STARTTLS 2010.01.08 09:51:04 LOG7[2692:2056]: <- 250 8BITMIME 2010.01.08 09:51:04 LOG7[2692:2056]: -> STARTTLS 2010.01.08 09:51:04 LOG7[2692:2056]: <- 220 Ready to start TLS 2010.01.08 09:51:04 LOG5[2692:2056]: Protocol negotiations succeeded 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): before/connect initialization 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 write client hello A 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 read server hello A 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 write client master key A 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 client start encryption 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 write client finished A 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 read server verify A 2010.01.08 09:51:04 LOG7[2692:2056]: SSL state (connect): SSLv2 read server finished A 2010.01.08 09:51:04 LOG7[2692:2056]: 1 items in the session cache 2010.01.08 09:51:04 LOG7[2692:2056]: 1 client connects (SSL_connect()) 2010.01.08 09:51:04 LOG7[2692:2056]: 1 client connects that finished 2010.01.08 09:51:04 LOG7[2692:2056]: 0 client renegotiations requested 2010.01.08 09:51:04 LOG7[2692:2056]: 0 server connects (SSL_accept()) 2010.01.08 09:51:04 LOG7[2692:2056]: 0 server connects that finished 2010.01.08 09:51:04 LOG7[2692:2056]: 0 server renegotiations requested 2010.01.08 09:51:04 LOG7[2692:2056]: 0 session cache hits 2010.01.08 09:51:04 LOG7[2692:2056]: 0 external session cache hits 2010.01.08 09:51:04 LOG7[2692:2056]: 0 session cache misses 2010.01.08 09:51:04 LOG7[2692:2056]: 0 session cache timeouts 2010.01.08 09:51:04 LOG6[2692:2056]: SSL connected: new session negotiated 2010.01.08 09:51:04 LOG6[2692:2056]: Negotiated ciphers: DES-CBC3-MD5 SSLv2 Kx=RSA Au=RSA Enc=3DES(168) Mac=MD5 2010.01.08 09:51:04 LOG7[2692:2056]: SSL closed on SSL_read 2010.01.08 09:51:04 LOG7[2692:2056]: Socket write shutdown 2010.01.08 09:51:04 LOG7[2692:2056]: Socket closed on read 2010.01.08 09:51:04 LOG7[2692:2056]: SSL write shutdown 2010.01.08 09:51:04 LOG5[2692:2056]: Connection closed: 626 bytes sent to SSL, 286 bytes sent to socket 2010.01.08 09:51:04 LOG7[2692:2056]: smtp_server finished (0 left) However, with OpenSSL older than 0.9.8i it can connect without "sslVersion=all" or with "sslVersion=SSLv3", and log tells SSLv3 was used. Why stunnel cannot connect with OpenSSL newer than 0.9.8j ? --- Tsurutani Naoki turutani(a)scphys.kyoto-u.ac.jp

1 0

Re: [stunnel-users] https not working with debug level 4,5,6,7
by ankur.agarwal＠wipro.com 07 Jan '10

07 Jan '10

Hi, When debug level is set to 4 , 5 , 6 , 7,https connection is not working.we have environment where we run the stunnel on a unit and try conncting it from windows machine through https connection.But this connection is not working for any debug level >3.can anybody help me.my sample stunnel file is : ; Sample stunnel configuration file by Michal Trojnara 2003-2006 ; Some options used here may not be adequate for your particular configuration ; Certificate/key is needed in server mode and optional in client mode ; The default certificate is provided only for testing and should not ; be used in a production environment cert = /usr/local/etc/config/certs/cert.pem key = /usr/local/etc/config/certs/privkey.pem ; Some performance tunings ;socket = l:TCP_NODELAY=1 ;socket = r:TCP_NODELAY=1 ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; Authentication stuff verify = 1 ; Don't forget to c_rehash CApath CApath = /usr/local/etc/config/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 ; Some debugging stuff useful for troubleshooting debug = 7 output = /tmp/stunnel.log ; Use it for client mode client = no ; Service-level configuration ; [pop3s] ; accept = 995 ; connect = 110 ; [imaps] ; accept = 993 ; connect = 143 ; [ssmtp] ; accept = 465 ; connect = 25 ;[https] accept = 443 connect = 80 TIMEOUTclose = 10 ; vim:ft=dosini Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com

1 0

Previous Post Please Disregard!
by johnnyb mee 03 Jan '10

03 Jan '10

I finally seem to have stunnel up ,and running with Agent ver 2.0 newsreader. I had to do some more research on this, and thru patience, and many config changes I believe stunnel is now supplying SSL for my agent newsreader. Not an easy task for a total windows dummy like me though. Never have got the Linux thing. I guess it is the having to deal with scripts issue continually that scares the hell out of me!! IF anyone needs the procedure in the future for this let me know and I will send it to them! jb

1 0

How to setup forte agent to work with stunnel latest version.
by johnnyb mee 03 Jan '10

03 Jan '10

I have been trying to get stunnel to work with Agent 2.0 newsreader so that I can use SSL from my news server. I have read the faq and gone thru alot of previous posts concerning this and found this one entry suggestion for the stunnel.config file in order to setup SSL to work with Agent which unfortunately has no SSL capabilities at all. It is suggested to use this entry to get both the newserver and client to work thru using stunnel as a proxy server service basically. c:\program files\stunnel -c -d 127.0.0.1:119 -r unlimited.newshosting.com:563 I copied and pasted the entry changing the usenet server to the above, and now I can no longer get stunnel to start at all. I am getting an error message stating I need to check the logfile to determine what is causing the error. The actual logfile error is as follows: 2010.01.02 23:12:59 LOG7[3456:1988]: RAND_status claims sufficient entropy for the PRNG 2010.01.02 23:12:59 LOG7[3456:1988]: PRNG seeded successfully 2010.01.02 23:12:59 LOG7[3456:1988]: Certificate: stunnel.pem 2010.01.02 23:12:59 LOG7[3456:1988]: Certificate loaded 2010.01.02 23:12:59 LOG7[3456:1988]: Key file: stunnel.pem 2010.01.02 23:12:59 LOG7[3456:1988]: Private key loaded 2010.01.02 23:12:59 LOG7[3456:1988]: SSL context initialized for service pop3s 2010.01.02 23:12:59 LOG7[3456:1988]: Certificate: stunnel.pem 2010.01.02 23:12:59 LOG7[3456:1988]: Certificate loaded 2010.01.02 23:12:59 LOG7[3456:1988]: Key file: stunnel.pem 2010.01.02 23:12:59 LOG7[3456:1988]: Private key loaded 2010.01.02 23:12:59 LOG7[3456:1988]: SSL context initialized for service imaps file stunnel.conf line 55: No '=' found 2010.01.02 23:12:59 LOG3[3456:1988]: Server is down As you can ascertain I am no linux expert at all so working with startup scripts such as this is challenging to say the least. Is the entry I pasted into the config file incorrect or not pointing to the right path for the config file directory or what do you think is missing? I am using Windows XP Pro and know that the actual file for the config resides in windows/system32 folder. Any input on this would be very much appreciated and thanks in advance all. jb

1 0