- stunnel-users - stunnel.org

Re: [stunnel-users] STunnel as a Relay server
by Ludolf Holzheid 19 Sep '08

19 Sep '08

On Thu, 2008-09-18 15:02:56 -0400, Thomas O'Hare wrote: > Ludolf > > Just got this as the main mail server was down for several days. > > The Win EXE that installs the STunnel service is what I meant. Is there > a way to edit the configuration text file to skip tunneling. There is > an ancient app on some PCs that can use only port 25 and we want to use > STunnel to do both SSL & non-SSL relays so we do not have to install & > maintain 2 different packages to basically do the same thing. Thomas, Of course, you get a clear-text port redirector if you connect two instances of stunnel running on the same machine, one acting as client, the other one as server. But again, I think this is oversized and not easier to set up than a simple TCP port redirector. Ludolf -- --------------------------------------------------------------- Ludolf Holzheid Tel: +49 621 339960 Bihl+Wiedemann GmbH Fax: +49 621 3392239 Floßwörthstraße 41 e-mail: lholzheid(a)bihl-wiedemann.de D-68199 Mannheim, Germany ---------------------------------------------------------------

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Bug in tools stunnel.init
by Kevin A. McGrail 17 Sep '08

17 Sep '08

Hi Michael, I've upgraded to stunnel 4.25 and found a few small bugs in the init script. In stunnel.init.in, I'm pretty sure the DAEMON line should be DAEMON=@prefix@/bin/stunnel and not DAEMON=@prefix@/etc/stunnel Also, when the parent process is killed with stop, I see Sep 17 14:34:16 server stunnel: warning: can't get client address: Bad file descriptor because the child processes seem to stick around. I've modified the init script to kill the main process using the pid file and then using pidof to identify and kill the remaining child processes. Is this expected behavior? regards, KAM

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Non-SSL Relay
by Thomas O'Hare 17 Sep '08

17 Sep '08

Hello I know the obvious and goes against what it was made for, but... Is there a way to use STunnel as a relay server w/o SSL? IOW, if you put STunnel in a number of installations but one or more PCs need a non-SSL server, can they use it? It would beat having to install "2" relay servers on each PC. -- Thanks, ~ Thomas O'Hare ~ Web, Wireless, Network, Database & Systems Software/Hardware Operations Manager | Virtual FoxPro User Group Tom(a)VFUG.Org | http://www.VFUG.Org/

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STunnel as a Relay server
by Thomas O'Hare 16 Sep '08

16 Sep '08

I know this is against what STunnel was made for but... There are Stunnel installations on client PCs but they also need to use STunnel to also send to non-SSL entities -- since it is easier then installing 2 relay/proxy servers. Is there a way to make STunnel into a non-SSL relay server? -- Thanks, ~ Thomas O'Hare ~ Web, Wireless, Network, Database & Systems Software/Hardware Operations Manager | Virtual FoxPro User Group Tom(a)VFUG.Org | http://www.VFUG.Org/

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What is the difference between "all" and "SSLv3" for sslVersion?
by Christopher Hunt 14 Sep '08

14 Sep '08

Hi there, I would like to understand the difference between specifying an sslVersion of "all" vs "SSLv3" when I see that the client is attempting SSLv3. I have a Java 1.5 ssl client connecting to an stunnel endpoint. If I specify an sslVersion of "all" in my stunnel configuration then the client is able to connect. When I see it connect, it appears to have connected as SSLv3 i.e.: 2008.09.14 15:59:20 LOG7[98326:2690846624]: https accepted FD=12 from 127.0.0.1:59812 2008.09.14 15:59:20 LOG7[98326:2952859648]: https started 2008.09.14 15:59:20 LOG7[98326:2952859648]: FD 12 in non-blocking mode 2008.09.14 15:59:20 LOG7[98326:2952859648]: TCP_NODELAY option set on local socket 2008.09.14 15:59:20 LOG7[98326:2952859648]: Waiting for a libwrap process 2008.09.14 15:59:20 LOG7[98326:2952859648]: Acquired libwrap process #0 2008.09.14 15:59:20 LOG7[98326:2952859648]: Releasing libwrap process #0 2008.09.14 15:59:20 LOG7[98326:2952859648]: Released libwrap process #0 2008.09.14 15:59:20 LOG7[98326:2952859648]: https permitted by libwrap from 127.0.0.1:59812 2008.09.14 15:59:20 LOG5[98326:2952859648]: https accepted connection from 127.0.0.1:59812 2008.09.14 15:59:20 LOG7[98326:2952859648]: SSL state (accept): before/ accept initialization 2008.09.14 15:59:21 LOG7[98326:2952859648]: SSL state (accept): SSLv3 read client hello A etc. If I substitute "SSLv3" for the value of sslVersion then I get: 2008.09.14 15:56:26 LOG7[98297:2690846624]: https accepted FD=12 from 127.0.0.1:59795 2008.09.14 15:56:26 LOG7[98297:2952859648]: https started 2008.09.14 15:56:26 LOG7[98297:2952859648]: FD 12 in non-blocking mode 2008.09.14 15:56:26 LOG7[98297:2952859648]: TCP_NODELAY option set on local socket 2008.09.14 15:56:26 LOG7[98297:2952859648]: Waiting for a libwrap process 2008.09.14 15:56:26 LOG7[98297:2952859648]: Acquired libwrap process #0 2008.09.14 15:56:26 LOG7[98297:2952859648]: Releasing libwrap process #0 2008.09.14 15:56:26 LOG7[98297:2952859648]: Released libwrap process #0 2008.09.14 15:56:26 LOG7[98297:2952859648]: https permitted by libwrap from 127.0.0.1:59795 2008.09.14 15:56:26 LOG5[98297:2952859648]: https accepted connection from 127.0.0.1:59795 2008.09.14 15:56:26 LOG7[98297:2952859648]: SSL state (accept): before/ accept initialization 2008.09.14 15:56:27 LOG3[98297:2952859648]: SSL_accept: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number I have also tried specifying "SSLv2" (client disconnected complaining that v2 was not supported) and "TLSv1" (yields the same error as "SSLv3". My version of stunnel is: stunnel 4.25 on i686-apple-darwin9.4.0 with OpenSSL 0.9.7l 28 Sep 2006 Thank you in advance for any explanation on the difference between "all" and "SSLv3". Kind regards, Christopher

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Stunnel on Vista gets "readsocket: Connection reset by peer"
by Scarsdale_James＠emc.com 10 Sep '08

10 Sep '08

Hi, I'm trying to use stunnel 4.25 on Vista over the Microsoft Loopback Adapter, but I always get the following error shown next to ">>>" below. Note that the session seems to have been negotiated okay. I found some notes about using "Run as administrator", but I still get the same behavior with this. The same setup works fine on XP. Any ideas before I start looking at code? Thanks, Jim 2008.09.10 15:27:42 LOG7[2844:692]: RAND_status claims sufficient entropy for the PRNG 2008.09.10 15:27:42 LOG7[2844:692]: PRNG seeded successfully 2008.09.10 15:27:42 LOG7[2844:692]: Certificate: stunnel.pem 2008.09.10 15:27:42 LOG7[2844:692]: Certificate loaded 2008.09.10 15:27:42 LOG7[2844:692]: Key file: stunnel.pem 2008.09.10 15:27:42 LOG7[2844:692]: Private key loaded 2008.09.10 15:27:42 LOG7[2844:692]: SSL context initialized for service smb 2008.09.10 15:27:42 LOG5[2844:692]: stunnel 4.25 on x86-pc-mingw32-gnu with OpenSSL 0.9.8h 28 May 2008 2008.09.10 15:27:42 LOG5[2844:692]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2008.09.10 15:27:42 LOG5[2844:2656]: No limit detected for the number of clients 2008.09.10 15:27:42 LOG7[2844:2656]: FD 248 in non-blocking mode 2008.09.10 15:27:42 LOG7[2844:2656]: SO_REUSEADDR option set on accept socket 2008.09.10 15:27:42 LOG7[2844:2656]: smb bound to 192.168.0.253:139 2008.09.10 15:28:13 LOG7[2844:2656]: smb accepted FD=240 from 192.168.0.253:49238 2008.09.10 15:28:13 LOG7[2844:2656]: Creating a new thread 2008.09.10 15:28:13 LOG7[2844:2656]: New thread created 2008.09.10 15:28:13 LOG7[2844:2856]: smb started 2008.09.10 15:28:13 LOG7[2844:2856]: FD 240 in non-blocking mode 2008.09.10 15:28:13 LOG7[2844:2856]: TCP_NODELAY option set on local socket 2008.09.10 15:28:13 LOG5[2844:2856]: smb accepted connection from 192.168.0.253:49238 2008.09.10 15:28:13 LOG7[2844:2856]: FD 264 in non-blocking mode 2008.09.10 15:28:13 LOG7[2844:2856]: smb connecting 128.221.79.49:10005 2008.09.10 15:28:13 LOG7[2844:2856]: connect_wait: waiting 10 seconds 2008.09.10 15:28:13 LOG7[2844:2856]: connect_wait: connected 2008.09.10 15:28:13 LOG5[2844:2856]: smb connected remote server from 128.221.79.44:49239 2008.09.10 15:28:13 LOG7[2844:2856]: Remote FD=264 initialized 2008.09.10 15:28:13 LOG7[2844:2856]: TCP_NODELAY option set on remote socket 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): before/connect initialization 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write client hello A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server hello A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server certificate A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server done A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write client key exchange A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write change cipher spec A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write finished A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 flush data 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read finished A 2008.09.10 15:28:13 LOG7[2844:2856]: 1 items in the session cache 2008.09.10 15:28:13 LOG7[2844:2856]: 1 client connects (SSL_connect()) 2008.09.10 15:28:13 LOG7[2844:2856]: 1 client connects that finished 2008.09.10 15:28:13 LOG7[2844:2856]: 0 client renegotiations requested 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server connects (SSL_accept()) 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server connects that finished 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server renegotiations requested 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache hits 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache misses 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache timeouts 2008.09.10 15:28:13 LOG6[2844:2856]: SSL connected: new session negotiated 2008.09.10 15:28:13 LOG6[2844:2856]: SSL connected: new session negotiated 2008.09.10 15:28:13 LOG6[2844:2856]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 >>> 2008.09.10 15:28:44 LOG3[2844:2856]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2008.09.10 15:28:44 LOG5[2844:2856]: Connection reset: 153 bytes sent to SSL, 0 bytes sent to socket 2008.09.10 15:28:44 LOG7[2844:2856]: smb finished (0 left) Relevant info stunnel.conf on client: [smb] accept = 192.168.0.253:139 connect = [server ipaddress]:10005 Relevant info stunnel.conf on server: [smb] accept = 10005 connect = 139 ;connect = 445

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Stunnel on Vista gets "readsocket: Connection reset by peer"
by Scarsdale_James＠emc.com 10 Sep '08

10 Sep '08

Hi, I'm trying to use stunnel 4.25 on Vista over the Microsoft Loopback Adapter, but I always get the following error shown next to ">>>" below. Note that the SSL session appears to have been negotiated okay. I found some notes about using "Run as adminstrator" on Vista, but I still get the same behavior with this. The same setup works fine on XP. Any ideas before I start looking at code? Thanks, Jim 2008.09.10 15:27:42 LOG7[2844:692]: RAND_status claims sufficient entropy for the PRNG 2008.09.10 15:27:42 LOG7[2844:692]: PRNG seeded successfully 2008.09.10 15:27:42 LOG7[2844:692]: Certificate: stunnel.pem 2008.09.10 15:27:42 LOG7[2844:692]: Certificate loaded 2008.09.10 15:27:42 LOG7[2844:692]: Key file: stunnel.pem 2008.09.10 15:27:42 LOG7[2844:692]: Private key loaded 2008.09.10 15:27:42 LOG7[2844:692]: SSL context initialized for service smb 2008.09.10 15:27:42 LOG5[2844:692]: stunnel 4.25 on x86-pc-mingw32-gnu with OpenSSL 0.9.8h 28 May 2008 2008.09.10 15:27:42 LOG5[2844:692]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2008.09.10 15:27:42 LOG5[2844:2656]: No limit detected for the number of clients 2008.09.10 15:27:42 LOG7[2844:2656]: FD 248 in non-blocking mode 2008.09.10 15:27:42 LOG7[2844:2656]: SO_REUSEADDR option set on accept socket 2008.09.10 15:27:42 LOG7[2844:2656]: smb bound to 192.168.0.253:139 2008.09.10 15:28:13 LOG7[2844:2656]: smb accepted FD=240 from 192.168.0.253:49238 2008.09.10 15:28:13 LOG7[2844:2656]: Creating a new thread 2008.09.10 15:28:13 LOG7[2844:2656]: New thread created 2008.09.10 15:28:13 LOG7[2844:2856]: smb started 2008.09.10 15:28:13 LOG7[2844:2856]: FD 240 in non-blocking mode 2008.09.10 15:28:13 LOG7[2844:2856]: TCP_NODELAY option set on local socket 2008.09.10 15:28:13 LOG5[2844:2856]: smb accepted connection from 192.168.0.253:49238 2008.09.10 15:28:13 LOG7[2844:2856]: FD 264 in non-blocking mode 2008.09.10 15:28:13 LOG7[2844:2856]: smb connecting [server ip]:10005 2008.09.10 15:28:13 LOG7[2844:2856]: connect_wait: waiting 10 seconds 2008.09.10 15:28:13 LOG7[2844:2856]: connect_wait: connected 2008.09.10 15:28:13 LOG5[2844:2856]: smb connected remote server from 128.221.79.44:49239 2008.09.10 15:28:13 LOG7[2844:2856]: Remote FD=264 initialized 2008.09.10 15:28:13 LOG7[2844:2856]: TCP_NODELAY option set on remote socket 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): before/connect initialization 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write client hello A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server hello A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server certificate A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read server done A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write client key exchange A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write change cipher spec A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 write finished A 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 flush data 2008.09.10 15:28:13 LOG7[2844:2856]: SSL state (connect): SSLv3 read finished A 2008.09.10 15:28:13 LOG7[2844:2856]: 1 items in the session cache 2008.09.10 15:28:13 LOG7[2844:2856]: 1 client connects (SSL_connect()) 2008.09.10 15:28:13 LOG7[2844:2856]: 1 client connects that finished 2008.09.10 15:28:13 LOG7[2844:2856]: 0 client renegotiations requested 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server connects (SSL_accept()) 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server connects that finished 2008.09.10 15:28:13 LOG7[2844:2856]: 0 server renegotiations requested 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache hits 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache misses 2008.09.10 15:28:13 LOG7[2844:2856]: 0 session cache timeouts 2008.09.10 15:28:13 LOG6[2844:2856]: SSL connected: new session negotiated 2008.09.10 15:28:13 LOG6[2844:2856]: SSL connected: new session negotiated 2008.09.10 15:28:13 LOG6[2844:2856]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 >>> 2008.09.10 15:28:44 LOG3[2844:2856]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2008.09.10 15:28:44 LOG5[2844:2856]: Connection reset: 153 bytes sent to SSL, 0 bytes sent to socket 2008.09.10 15:28:44 LOG7[2844:2856]: smb finished (0 left) Relevant info stunnel.conf on client: [smb] accept = 192.168.0.253:139 connect = [server ip]:10005 Relevant info stunnel.conf on server: [smb] accept = 10005 connect = 139 ;connect = 445

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Building STunnel 4.25 with OpenSSL 0.9.8h on Windows
by Paul Coleman 10 Sep '08

10 Sep '08

Hi everyone, I've recently been trying to compile STunnel for Windows, but have found so many conflicting reports of the best way to do it on the website / other sites, that I'm now well and truly confused! I've got MSVS 2005, but have also tried with mingw, and cygwin - and also on Linux using mingw32. I'm unsure as to whether I need some Makefile.w32, whether I need to compile OpenSSL from source, where I need to put OpenSSL libraries when they're done, if I need to run Configure, etc etc. I'm not looking for a complete step by step guide including 'cd to x, type this' (although I wouldn't complain! :P), but a general poke in the right direction would be great. Thanks for your help, --Paul

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Re: [stunnel-users] Help using stunnel for the first time
by Jilin Zhang 09 Sep '08

09 Sep '08

try: http://localhost:1515 > Hi, > > I'm trying to use stunnel for the first time (on Mac OS X 10.5), and > I'm not having much luck. > > First of all, I downloaded the source and installed stunnel > successfully. I then setup a config file as follows (where myhost is > the host i am connecting to): > > client=yes > verify=0 > [psuedo-https] > accept=1515 > connect=myhost:443 > TIMEOUTclose = 0 > > Then, I run the following on the command line: > /usr/local/bin/stunnel ./stunnel.config > > It appears that stunnel runs without error, and if I do 'ps aux | grep > stunnel' there are 4 stunnel processes running. > > Then, as a test, I try to connect to port 1515 from my web browser by > visiting https://localhost:1515, but it just hangs there... nothing. > > Any suggestions? > > Thanks! > > Ian > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)mirt.net > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > >

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Help using stunnel for the first time
by Ian Baxter 09 Sep '08

09 Sep '08

Hi, I'm trying to use stunnel for the first time (on Mac OS X 10.5), and I'm not having much luck. First of all, I downloaded the source and installed stunnel successfully. I then setup a config file as follows (where myhost is the host i am connecting to): client=yes verify=0 [psuedo-https] accept=1515 connect=myhost:443 TIMEOUTclose = 0 Then, I run the following on the command line: /usr/local/bin/stunnel ./stunnel.config It appears that stunnel runs without error, and if I do 'ps aux | grep stunnel' there are 4 stunnel processes running. Then, as a test, I try to connect to port 1515 from my web browser by visiting https://localhost:1515, but it just hangs there... nothing. Any suggestions? Thanks! Ian

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