- stunnel-users - stunnel.org

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.

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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.

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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

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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

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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

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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.

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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 ++++++

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