stunnel-users

stunnel-users@stunnel.org

5 participants
3293 discussions

I'm very much a newbie to stunnel
by Harmon, Paul 26 Nov '07

26 Nov '07

Hi Guys, I'm very new to Stunnel. In fact I have no experience with it what so ever. My situation is this: I have server program and a client at the moment which know nothing about SSL. Yet the powers that be insist that my two machines, if they must use sockets, do so using SSL. After reading through the distribution, I found this very interesting program called Stunnel which sounds like it might solve my problem quite well. From what I've read so far, I gather this program can be used as an SSL wrapper for my server and my client. Would some kind soul please help me with the configuration process (the configuration file) so that my client and server can be safe and secure? My server uses a port which I have chosen (really quite arbitrarily). Basically I need the server to listen on that port and wait for incoming data which it will processs and in most cases not even reply. With normal sockets this is a no-brainer since Steven's book outlines it very well. If I understand the documentation I've read so far, Stunnel adds the encryption layer on top of that which I need. So how do I configure and invokestunnel in this environment? Sorry for stupid questions at the moment I just lack examples like this and confidence in using the program. Thanks, Paul

2 1

Certificate management
by Koenraad Lelong 23 Nov '07

23 Nov '07

Hi, Since a few months I'm playing with stunnel. Last month I installed a stunnel at a customer. This week he reported he could not connect any more. After testing here I discovered the CA cert had expired. I made this myself and I didn't see that it's only valid for one month. I made new certificates making sure they are valid for longer than one month, so this is solved for now. My question : are there good documents about management of certificates ? I'm specially interested in renewing the certificates. Regards, Koenraad Lelong.

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some newbie questions
by Lluís Forns 23 Nov '07

23 Nov '07

Let me first explain what I want to do in order to see if stunnel is what I need: I have some laptops around the world and I want to let them login in my intranet. The login is versus a Samba server. So more or less the connection would be: Laptop (running winXP) --- router --- internet --- router --- linux ssh server(port 22 open) --- linux samba server Could stunnel help me achivieng this? any hint of how? I have read the documentation, but I am a little lost. thanks -- <http://www.escoltesiguies.cat>*Lluís Forns - Tècnic Informàtic * *Servei d'Informàtica* *Minyons Escoltes i Guies de Catalunya (MEG)* *Telèfon:* 93 590 27 00 *Fax:* 93 590 04 92 *www.escoltesiguies.cat* No m'imprimeixis si no és necessari. Protegim el medi ambient.

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Re: [stunnel-users] Stunnel and Outlook Web Access Problems
by Craig Retief 20 Nov '07

20 Nov '07

I see that you have client = yes in the config file. When client = yes is set outside the service block, it becomes a global setting that tells all the services that it should tunnel that they are clients and not servers. If you specify the client = yes within a service eg. [pop3s] client = yes accept = 995 connect = 110 then stunnel knows that the specified service alone is a client. What I recommend is that you disable the client = yes in the global area and change you config file to something like this: I have removed the comments to shorten the config for explanation: socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 CRLpath = crls CRLfile = certnew.pem debug = 7 output = stunnel.log ;client = yes [https] accept = 443 connect = 192.168.0.5:443 TIMEOUTclose = 0 Try using this as your config and see if it works or not. Cheers Craig From: Dan Vespa [mailto:dan@sideshow.sytes.net] Sent: 19 November 2007 05:07 PM To: Craig Retief Subject: RE: [stunnel-users] Stunnel and Outlook Web Access Problems Craig, Here it is.... ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; 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 = stunnel.pem ;key = stunnel.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 = 2 ; Don't forget to c_rehash CApath ;CApath = crls ; It's often easier to use CAfile ;CAfile = certnew.pem ; Don't forget to c_rehash CRLpath CRLpath = crls ; Alternatively you can use CRLfile CRLfile = certnew.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 = 192.168.0.5:443 TIMEOUTclose = 0 ; vim:ft=dosini _____ From: Craig Retief Sent: Mon 19/11/2007 9:54 AM To: 'Dan Vespa' Cc: stunnel-users(a)mirt.net Subject: RE: [stunnel-users] Stunnel and Outlook Web Access Problems Please Post your stunnel configs. Makes life easier. Cheers Craig From: Dan Vespa [mailto:dan@sideshow.sytes.net] Sent: 19 November 2007 03:35 PM To: Craig Subject: RE: [stunnel-users] Stunnel and Outlook Web Access Problems Craig, I set the debug level higher and this is what my log outputs.... 2007.11.19 08:25:54 LOG7[1596:2656]: RAND_status claims sufficient entropy for the PRNG 2007.11.19 08:25:54 LOG7[1596:2656]: PRNG seeded successfully 2007.11.19 08:25:54 LOG7[1596:2656]: SSL context initialized for service https 2007.11.19 08:25:54 LOG5[1596:2656]: stunnel 4.21 on x86-pc-mingw32-gnu with OpenSSL 0.9.8g 19 Oct 2007 2007.11.19 08:25:54 LOG5[1596:2656]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2007.11.19 08:25:54 LOG5[1596:3012]: No limit detected for the number of clients 2007.11.19 08:25:54 LOG7[1596:3012]: FD 188 in non-blocking mode 2007.11.19 08:25:54 LOG7[1596:3012]: SO_REUSEADDR option set on accept socket 2007.11.19 08:25:54 LOG7[1596:3012]: https bound to 0.0.0.0:443 2007.11.19 08:26:32 LOG7[1596:3012]: https accepted FD=236 from 127.0.0.1:1409 2007.11.19 08:26:32 LOG7[1596:3012]: Creating a new thread 2007.11.19 08:26:32 LOG7[1596:3012]: New thread created 2007.11.19 08:26:32 LOG7[1596:2576]: https started 2007.11.19 08:26:32 LOG7[1596:2576]: FD 236 in non-blocking mode 2007.11.19 08:26:32 LOG7[1596:2576]: TCP_NODELAY option set on local socket 2007.11.19 08:26:32 LOG5[1596:2576]: https accepted connection from 127.0.0.1:1409 2007.11.19 08:26:32 LOG7[1596:2576]: FD 260 in non-blocking mode 2007.11.19 08:26:32 LOG7[1596:2576]: https connecting 192.168.0.5:443 2007.11.19 08:26:32 LOG7[1596:2576]: connect_wait: waiting 10 seconds 2007.11.19 08:26:32 LOG7[1596:2576]: connect_wait: connected 2007.11.19 08:26:32 LOG5[1596:2576]: https connected remote server from 192.168.0.24:1410 2007.11.19 08:26:32 LOG7[1596:2576]: Remote FD=260 initialized 2007.11.19 08:26:32 LOG7[1596:2576]: TCP_NODELAY option set on remote socket 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): before/connect initialization 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write client hello A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server hello A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server certificate A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server done A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write client key exchange A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write change cipher spec A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write finished A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 flush data 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read finished A 2007.11.19 08:26:32 LOG7[1596:2576]: 1 items in the session cache 2007.11.19 08:26:32 LOG7[1596:2576]: 1 client connects (SSL_connect()) 2007.11.19 08:26:32 LOG7[1596:2576]: 1 client connects that finished 2007.11.19 08:26:32 LOG7[1596:2576]: 0 client renegotiations requested 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server connects (SSL_accept()) 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server connects that finished 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server renegotiations requested 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache hits 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache misses 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache timeouts 2007.11.19 08:26:32 LOG6[1596:2576]: SSL connected: new session negotiated 2007.11.19 08:26:32 LOG6[1596:2576]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 2007.11.19 08:26:53 LOG7[1596:3012]: https accepted FD=288 from 127.0.0.1:1411 2007.11.19 08:26:53 LOG7[1596:3012]: Creating a new thread 2007.11.19 08:26:53 LOG7[1596:3012]: New thread created 2007.11.19 08:26:53 LOG7[1596:1060]: https started 2007.11.19 08:26:53 LOG7[1596:1060]: FD 288 in non-blocking mode 2007.11.19 08:26:53 LOG7[1596:1060]: TCP_NODELAY option set on local socket 2007.11.19 08:26:53 LOG5[1596:1060]: https accepted connection from 127.0.0.1:1411 2007.11.19 08:26:53 LOG7[1596:1060]: FD 312 in non-blocking mode 2007.11.19 08:26:53 LOG7[1596:1060]: https connecting 192.168.0.5:443 2007.11.19 08:26:53 LOG7[1596:1060]: connect_wait: waiting 10 seconds 2007.11.19 08:26:53 LOG7[1596:1060]: connect_wait: connected 2007.11.19 08:26:53 LOG5[1596:1060]: https connected remote server from 192.168.0.24:1412 2007.11.19 08:26:53 LOG7[1596:1060]: Remote FD=312 initialized 2007.11.19 08:26:53 LOG7[1596:1060]: TCP_NODELAY option set on remote socket 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): before/connect initialization 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write client hello A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 read server hello A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 read finished A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write change cipher spec A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write finished A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 flush data 2007.11.19 08:26:53 LOG7[1596:1060]: 1 items in the session cache 2007.11.19 08:26:53 LOG7[1596:1060]: 2 client connects (SSL_connect()) 2007.11.19 08:26:53 LOG7[1596:1060]: 2 client connects that finished 2007.11.19 08:26:53 LOG7[1596:1060]: 0 client renegotiations requested 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server connects (SSL_accept()) 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server connects that finished 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server renegotiations requested 2007.11.19 08:26:53 LOG7[1596:1060]: 1 session cache hits 2007.11.19 08:26:53 LOG7[1596:1060]: 0 session cache misses 2007.11.19 08:26:53 LOG7[1596:1060]: 0 session cache timeouts 2007.11.19 08:26:53 LOG6[1596:1060]: SSL connected: previous session reused 2007.11.19 08:26:53 LOG7[1596:1060]: SSL socket closed on SSL_read 2007.11.19 08:26:53 LOG7[1596:1060]: Socket write shutdown 2007.11.19 08:26:53 LOG5[1596:1060]: Connection closed: 70 bytes sent to SSL, 164 bytes sent to socket 2007.11.19 08:26:53 LOG7[1596:1060]: https finished (1 left) 2007.11.19 08:27:53 LOG3[1596:2576]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2007.11.19 08:27:53 LOG5[1596:2576]: Connection reset: 1102 bytes sent to SSL, 1241 bytes sent to socket 2007.11.19 08:27:53 LOG7[1596:2576]: https finished (0 left) Does this make any sense to you???? Dan _____ From: Craig Sent: Mon 19/11/2007 1:34 AM To: stunnel-users(a)mirt.net Subject: Re: [stunnel-users] Stunnel and Outlook Web Access Problems OWA rewrites the URL when you log in and I have found that it causes problems when doing that with a Stunnel connection. What I think might be happening is that your initial connection says http://server.tld/ then when you log in OWA rewrites the URL to https://server.tld/ What I think is happening is that your stunnel is listening on port 80 and when you log in, OWA changes the listening port in the browser to port 443. Try running the listening server (stunnel server) to listen on port 443 instead of port 80 and see if that fixes the problem. Cheers Craig From: stunnel-users-bounces(a)mirt.net [mailto:stunnel-users-bounces@mirt.net] On Behalf Of Dan Vespa Sent: 17 November 2007 07:21 PM To: stunnel-users(a)mirt.net Subject: [stunnel-users] Stunnel and Outlook Web Access Problems I am trying to use the latest version of stunnel to connect to OWA. I set stunnel to listen on port 80 (localhost) and then connect to myserverip on port 443. I get the login screen but can go no further after I Enter my credentials and Click OK. Checking the stunnel log screen it shows that a connect has been made? I don't understand why It won't connect any further?? OWA is on Exchange Server 2003 and I am using Windows XP SP2. I have also updated to Open SSL latest version. Thanks in Advance. Dan

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Re: [stunnel-users] Stunnel and Outlook Web Access Problems
by Craig Retief 19 Nov '07

19 Nov '07

Please Post your stunnel configs. Makes life easier. Cheers Craig From: Dan Vespa [mailto:dan@sideshow.sytes.net] Sent: 19 November 2007 03:35 PM To: Craig Subject: RE: [stunnel-users] Stunnel and Outlook Web Access Problems Craig, I set the debug level higher and this is what my log outputs.... 2007.11.19 08:25:54 LOG7[1596:2656]: RAND_status claims sufficient entropy for the PRNG 2007.11.19 08:25:54 LOG7[1596:2656]: PRNG seeded successfully 2007.11.19 08:25:54 LOG7[1596:2656]: SSL context initialized for service https 2007.11.19 08:25:54 LOG5[1596:2656]: stunnel 4.21 on x86-pc-mingw32-gnu with OpenSSL 0.9.8g 19 Oct 2007 2007.11.19 08:25:54 LOG5[1596:2656]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2007.11.19 08:25:54 LOG5[1596:3012]: No limit detected for the number of clients 2007.11.19 08:25:54 LOG7[1596:3012]: FD 188 in non-blocking mode 2007.11.19 08:25:54 LOG7[1596:3012]: SO_REUSEADDR option set on accept socket 2007.11.19 08:25:54 LOG7[1596:3012]: https bound to 0.0.0.0:443 2007.11.19 08:26:32 LOG7[1596:3012]: https accepted FD=236 from 127.0.0.1:1409 2007.11.19 08:26:32 LOG7[1596:3012]: Creating a new thread 2007.11.19 08:26:32 LOG7[1596:3012]: New thread created 2007.11.19 08:26:32 LOG7[1596:2576]: https started 2007.11.19 08:26:32 LOG7[1596:2576]: FD 236 in non-blocking mode 2007.11.19 08:26:32 LOG7[1596:2576]: TCP_NODELAY option set on local socket 2007.11.19 08:26:32 LOG5[1596:2576]: https accepted connection from 127.0.0.1:1409 2007.11.19 08:26:32 LOG7[1596:2576]: FD 260 in non-blocking mode 2007.11.19 08:26:32 LOG7[1596:2576]: https connecting 192.168.0.5:443 2007.11.19 08:26:32 LOG7[1596:2576]: connect_wait: waiting 10 seconds 2007.11.19 08:26:32 LOG7[1596:2576]: connect_wait: connected 2007.11.19 08:26:32 LOG5[1596:2576]: https connected remote server from 192.168.0.24:1410 2007.11.19 08:26:32 LOG7[1596:2576]: Remote FD=260 initialized 2007.11.19 08:26:32 LOG7[1596:2576]: TCP_NODELAY option set on remote socket 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): before/connect initialization 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write client hello A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server hello A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server certificate A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read server done A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write client key exchange A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write change cipher spec A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 write finished A 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 flush data 2007.11.19 08:26:32 LOG7[1596:2576]: SSL state (connect): SSLv3 read finished A 2007.11.19 08:26:32 LOG7[1596:2576]: 1 items in the session cache 2007.11.19 08:26:32 LOG7[1596:2576]: 1 client connects (SSL_connect()) 2007.11.19 08:26:32 LOG7[1596:2576]: 1 client connects that finished 2007.11.19 08:26:32 LOG7[1596:2576]: 0 client renegotiations requested 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server connects (SSL_accept()) 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server connects that finished 2007.11.19 08:26:32 LOG7[1596:2576]: 0 server renegotiations requested 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache hits 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache misses 2007.11.19 08:26:32 LOG7[1596:2576]: 0 session cache timeouts 2007.11.19 08:26:32 LOG6[1596:2576]: SSL connected: new session negotiated 2007.11.19 08:26:32 LOG6[1596:2576]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 2007.11.19 08:26:53 LOG7[1596:3012]: https accepted FD=288 from 127.0.0.1:1411 2007.11.19 08:26:53 LOG7[1596:3012]: Creating a new thread 2007.11.19 08:26:53 LOG7[1596:3012]: New thread created 2007.11.19 08:26:53 LOG7[1596:1060]: https started 2007.11.19 08:26:53 LOG7[1596:1060]: FD 288 in non-blocking mode 2007.11.19 08:26:53 LOG7[1596:1060]: TCP_NODELAY option set on local socket 2007.11.19 08:26:53 LOG5[1596:1060]: https accepted connection from 127.0.0.1:1411 2007.11.19 08:26:53 LOG7[1596:1060]: FD 312 in non-blocking mode 2007.11.19 08:26:53 LOG7[1596:1060]: https connecting 192.168.0.5:443 2007.11.19 08:26:53 LOG7[1596:1060]: connect_wait: waiting 10 seconds 2007.11.19 08:26:53 LOG7[1596:1060]: connect_wait: connected 2007.11.19 08:26:53 LOG5[1596:1060]: https connected remote server from 192.168.0.24:1412 2007.11.19 08:26:53 LOG7[1596:1060]: Remote FD=312 initialized 2007.11.19 08:26:53 LOG7[1596:1060]: TCP_NODELAY option set on remote socket 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): before/connect initialization 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write client hello A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 read server hello A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 read finished A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write change cipher spec A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 write finished A 2007.11.19 08:26:53 LOG7[1596:1060]: SSL state (connect): SSLv3 flush data 2007.11.19 08:26:53 LOG7[1596:1060]: 1 items in the session cache 2007.11.19 08:26:53 LOG7[1596:1060]: 2 client connects (SSL_connect()) 2007.11.19 08:26:53 LOG7[1596:1060]: 2 client connects that finished 2007.11.19 08:26:53 LOG7[1596:1060]: 0 client renegotiations requested 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server connects (SSL_accept()) 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server connects that finished 2007.11.19 08:26:53 LOG7[1596:1060]: 0 server renegotiations requested 2007.11.19 08:26:53 LOG7[1596:1060]: 1 session cache hits 2007.11.19 08:26:53 LOG7[1596:1060]: 0 session cache misses 2007.11.19 08:26:53 LOG7[1596:1060]: 0 session cache timeouts 2007.11.19 08:26:53 LOG6[1596:1060]: SSL connected: previous session reused 2007.11.19 08:26:53 LOG7[1596:1060]: SSL socket closed on SSL_read 2007.11.19 08:26:53 LOG7[1596:1060]: Socket write shutdown 2007.11.19 08:26:53 LOG5[1596:1060]: Connection closed: 70 bytes sent to SSL, 164 bytes sent to socket 2007.11.19 08:26:53 LOG7[1596:1060]: https finished (1 left) 2007.11.19 08:27:53 LOG3[1596:2576]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2007.11.19 08:27:53 LOG5[1596:2576]: Connection reset: 1102 bytes sent to SSL, 1241 bytes sent to socket 2007.11.19 08:27:53 LOG7[1596:2576]: https finished (0 left) Does this make any sense to you???? Dan _____ From: Craig Sent: Mon 19/11/2007 1:34 AM To: stunnel-users(a)mirt.net Subject: Re: [stunnel-users] Stunnel and Outlook Web Access Problems OWA rewrites the URL when you log in and I have found that it causes problems when doing that with a Stunnel connection. What I think might be happening is that your initial connection says http://server.tld/ then when you log in OWA rewrites the URL to https://server.tld/ What I think is happening is that your stunnel is listening on port 80 and when you log in, OWA changes the listening port in the browser to port 443. Try running the listening server (stunnel server) to listen on port 443 instead of port 80 and see if that fixes the problem. Cheers Craig From: stunnel-users-bounces(a)mirt.net [mailto:stunnel-users-bounces@mirt.net] On Behalf Of Dan Vespa Sent: 17 November 2007 07:21 PM To: stunnel-users(a)mirt.net Subject: [stunnel-users] Stunnel and Outlook Web Access Problems I am trying to use the latest version of stunnel to connect to OWA. I set stunnel to listen on port 80 (localhost) and then connect to myserverip on port 443. I get the login screen but can go no further after I Enter my credentials and Click OK. Checking the stunnel log screen it shows that a connect has been made? I don't understand why It won't connect any further?? OWA is on Exchange Server 2003 and I am using Windows XP SP2. I have also updated to Open SSL latest version. Thanks in Advance. Dan

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Stunnel and Outlook Web Access Problems
by Dan Vespa 19 Nov '07

19 Nov '07

I am trying to use the latest version of stunnel to connect to OWA. I set stunnel to listen on port 80 (localhost) and then connect to myserverip on port 443. I get the login screen but can go no further after I Enter my credentials and Click OK. Checking the stunnel log screen it shows that a connect has been made? I don't understand why It won't connect any further?? OWA is on Exchange Server 2003 and I am using Windows XP SP2. I have also updated to Open SSL latest version. Thanks in Advance. Dan

2 1

NFS over stunnel
by Andy Wettstein 19 Nov '07

19 Nov '07

Hi, I wrote a document about how I am running NFS over stunnel. Using some firewall rules I was able to eliminate most of the complications for using secure NFS. It could probably use more detailed explanations, but the scripts I am using are all there. It still kind of in test phase, but I am currently mounting my home directory using stunnel. I haven't really noticed much of a speed problem in day to day activities. https://w3.physics.uiuc.edu/physwiki/doku.php?id=pcs:unix:nfs_over_stunnel Please send any questions you might have. -- andy wettstein unix administrator department of physics university of illinois at urbana-champaign

2 2

receive error
by Protect Girl 14 Nov '07

14 Nov '07

Hi When run stunnel.exe, I was receive "the procedure entry point SSL_CTX_xet_info_callback could not be located in the dynamic library libssl32.dll" error.

2 1

can't get client address
by Draeath Spamtrap 14 Nov '07

14 Nov '07

Stunnel appears to be working fine, but when started it spams my syslog about 5 times with the following message: "stunnel: warning: can't get client address: Bad file descriptor" There are no other messages from stunnel. I'm not sure where it's coming from... It looks like it is running without command line arguments. My init script has the following snippets that make me think that: > PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin > PREFIX=/usr/local > DAEMON=/usr/local/bin/stunnel > PIDFILE=/var/lib/stunnel/stunnel.pid > > test -f $DAEMON || exit 0 > > case "$1" in > start) > echo -n "Starting universal SSL tunnel: stunnel" > $DAEMON || echo -n " failed" > echo "." > ;; > {TRIMMED REST OF FILE} My stunnel version info: > stunnel 4.21 on i686-pc-linux-gnu with OpenSSL 0.9.8e 23 Feb 2007 > Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP > > 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 My stunnel config file: > cert = /usr/local/etc/stunnel/stunnel.pem > key = /usr/local/etc/stunnel/stunnel.pem > sslVersion = SSLv3 > chroot = /var/lib/stunnel/ > setuid = 99 > setgid = 99 > pid = /stunnel.pid > socket = l:TCP_NODELAY=1 > socket = r:TCP_NODELAY=1 > client = yes > [nntps] > accept = 127.0.0.1:119 > connect = secure.news.easynews.com:563 Again, it is all working, and aside from my TCP_NODELAY flags, everything in my conf would be a show-stopper if it was invalid or not working... *of note: I had to set the uid/gid number. for some reason it couldn't resolve the gid/uid on it's own. My /etc/passwd is world-readable (with hashes in shadow) as is standard. I'm not sure I should even be worried about this...

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Reporting bugs in stunnel 4.21
by Michal Trojnara 10 Nov '07

10 Nov '07

Dear Users, Please test the new stunnel 4.21 and report your issues on the Bug Tracking System (http://stunnel.mirt.net/bts.html) or email the information to the stunnel-users mailing list. This is the easiest way to help stunnel working fine on your various systems. I was developing it for quite a long time and I likely failed to fix all the bugs. I'm especially interested in all compilation or runtime issues with the new FIPS and libwrap code. By the time you can find a patch for setuid/setgid+chroot problem here: ftp://stunnel.mirt.net/stunnel/setuid.patch Best regards, Mike

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