stunnel-users

3 participants
3308 discussions

Re: enabling zlib compression
by ahall＠madasafish.com 26 Jun '06

26 Jun '06

I have checked the OpenSSL INSTALL file and zlib /should/ be enabled by default... zlib-dynamic Like "zlib", but has OpenSSL load the zlib library dynamically when needed. This is only supported on systems where loading of shared libraries is supported. This is the default choice. If I can assume that Linux supports the loading of shared libraries, then can someone please help me to get zlib compression working over the stunnel. Thanks very much. On Fri, 23 Jun 2006 17:01:24 , <ahall(a)madasafish.com> sent: >Hi there, > >When I try to enable zlib compression at the server I get this error when >starting it up... > >2006.06.23 15:44:39 LOG3[3426:3086293504]: Failed to add zlib compression method > >How do I get zlib to work? Do I need to compile OpenSSL with zlib? > >I'm using Fedora Core 3 with stunnel-4.15, and OpenSSL and zlib are from RPM's. > >Thanks very much. > >---- - Madasafish - Voted Best Heavy Consumer Broadband Provider in the 2006 Internet Industry Awards http://www.madasafish.com/ ---- - Madasafish - Voted Best Heavy Consumer Broadband Provider in the 2006 Internet Industry Awards http://www.madasafish.com/

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Solaris9/Sparc runtime library problems
by Dave Hinz 23 Jun '06

23 Jun '06

This is probably a very basic problem, but I've checked the FAQ and googled through the mailing list's archives and I'm not seeing what appears to be a match for this problem. I'm completely new to stunnel. It built and runs just fine on one of my linux dev boxes, but on Solaris, I can't get it to run. Attempting to run /usr/local/sbin/stunnel, I get the following: ---begin output--- jabba% ./stunnel ld.so.1: ./stunnel: fatal: libssl.so.0.9.7: open failed: No such file or directory Killed ---end output--- The various debug switches to stunnel give the same output - it's dying before anything can be started, apparently. libssl.so.0.9.7 is located on that box at /usr/local/ssl/lib/libssl.so.0.9.7and other ssl functions of the system appear to work normally. I suspect that stunnel just doesn't know how to find it, but I'm at a loss as to how to tell it where to look. Can someone suggest my next steps please? Thank you, Dave Hinz

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Patch for stunnel 4.15 to support pgsql protocol
by Peter Kuma 23 Jun '06

23 Jun '06

Hi I've written a short patch for stunnel 4.15 adding support for PostgreSQL SSL negotiation. I hope it'll be useful. http://vcielka.rec.uniba.sk/~peter/stunnel-pgsql.patch PostgreSQL documentation explaining how to establish SSL connection: http://www.postgresql.org/docs/8.1/interactive/protocol-flow.html#AEN60652 http://www.postgresql.org/docs/8.1/interactive/protocol-message-formats.html Regards Peter Kuma

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enabling zlib compression
by ahall＠madasafish.com 23 Jun '06

23 Jun '06

Hi there, When I try to enable zlib compression at the server I get this error when starting it up... 2006.06.23 15:44:39 LOG3[3426:3086293504]: Failed to add zlib compression method How do I get zlib to work? Do I need to compile OpenSSL with zlib? I'm using Fedora Core 3 with stunnel-4.15, and OpenSSL and zlib are from RPM's. Thanks very much. ---- - Madasafish - Voted Best Heavy Consumer Broadband Provider in the 2006 Internet Industry Awards http://www.madasafish.com/

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Re: CRLPath not working (Michal Trojnara)
by Nagasundaram, Sekhar 15 Jun '06

15 Jun '06

Michael: We will give this also a shot. The workaround worked however. Much thanks Sekhar ---------------- Message: 4 Date: Tue, 13 Jun 2006 23:44:50 +0200 From: Michal Trojnara <Michal.Trojnara(a)mobi-com.net> Subject: Re: [stunnel-users] CRLPath not working To: stunnel-users(a)mirt.net Message-ID: <200606132344.53413.Michal.Trojnara(a)mobi-com.net> Content-Type: text/plain; charset="utf-8" On Tuesday 13 June 2006 02:14, Nagasundaram, Sekhar wrote: > Here are the configuration and the log files as you requested.... Thank you. Please try the following change: --- ctx.old 2006-06-13 23:33:29.000000000 +0200 +++ ctx.c 2006-06-13 23:35:33.000000000 +0200 @@ -460,6 +460,7 @@ s_log(LOG_DEBUG, "Loaded CRLs from %s", section->crl_file); } if(section->crl_dir) { + section->revocation_store->cache=0; lookup=X509_STORE_add_lookup(section->revocation_store, X509_LOOKUP_hash_dir()); if(!lookup) { BTW: Did my workaround work? Best regards, Mike

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RE: [stunnel-users] Is there a limit to the number of services youcanhave defined on a client?
by Lund, Claus 14 Jun '06

14 Jun '06

Well, we need about 100+ in our current environment. So how about increasing it to maybe 256? -Claus -----Original Message----- From: stunnel-users-bounces(a)mirt.net [mailto:[email protected]] On Behalf Of Michal Trojnara Sent: Wednesday, June 14, 2006 4:23 PM To: <stunnel-users(a)mirt.net> <stunnel-users(a)mirt.net> Subject: Re: [stunnel-users] Is there a limit to the number of services youcanhave defined on a client? On 2006-06-14, at 22:18, Lund, Claus wrote: > Any chance the default could be increased? Really, what's 4MB of RAM > between friends (for the example in your answer)? :-) Okay. What value do you recommend? > And maybe implement an error/warning message when the limit is > exceeded? Good idea. I'll do it. Best regards, Mike _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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RE: [stunnel-users] Is there a limit to the number of services youcan have defined on a client?
by Lund, Claus 14 Jun '06

14 Jun '06

Thanks Mike. Any chance the default could be increased? Really, what's 4MB of RAM between friends (for the example in your answer)? :-) And maybe implement an error/warning message when the limit is exceeded? -Claus -----Original Message----- From: stunnel-users-bounces(a)mirt.net [mailto:[email protected]] On Behalf Of Michal Trojnara Sent: Wednesday, June 14, 2006 4:11 PM To: <stunnel-users(a)mirt.net> <stunnel-users(a)mirt.net> Subject: Re: [stunnel-users] Is there a limit to the number of services youcan have defined on a client? On 2006-06-14, at 21:20, Lund, Claus wrote: > I ran > some quick tests and it looks like it's impossible to have more than > 64 services defined? Here is your answer: http://stunnel.mirt.net/pipermail/stunnel-users/2006-April/001099.html Best regards, Mike _______________________________________________ stunnel-users mailing list stunnel-users(a)mirt.net http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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Is there a limit to the number of services you can have defined on a client?
by Lund, Claus 14 Jun '06

14 Jun '06

We have a bunch of middle-tier servers for an application and we're using stunnel to encrypt the traffic between the windows clients and those middle-tier servers. The clients have stunnel.conf files with a large number of services defined and it seems like we're hitting some limit in stunnel. I ran some quick tests and it looks like it's impossible to have more than 64 services defined? If I have a config file with about 100 services defined then everything works fine up until I try to connect to service number 65. When I try to connect to that service then the client just hangs forever (and there's no output in the log file on the client). We are using version 4.14 but I tested this on 4.15 as well and I am getting the same result there. Here's a piece of the config file I am using for testing: "client = yes ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log [blah] accept = 13806 connect = tax187a:13806 [blah1] accept = 13807 connect = tax187a:13806" Then followed by blah2 - blah100. Things work fine when connect to "blah63" and lower. Anything higher than that cause the stunnel client to just hang. Thank you in advance, Claus ____________________________________________ Claus Lund Systems Developer NEW EMAIL ADDRESS: Claus.Lund(a)state.vt.us Department of Taxes Information Systems 133 State Street Montpelier, Vermont 05633-1401 (802) 828-3735

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CRLPath not working
by Nagasundaram, Sekhar 13 Jun '06

13 Jun '06

Mike: Here are the configuration and the log files as you requested.... ---------------------------------------------BEGIN CONFIG --------------------------------- # switch-simulator stunnel configuration file # Copyright by Michal Trojnara 2002 # Certs and keys cert = /etc/certs/demoedge2-cert.pem key = /etc/keys/demoedge2-key.pem # PID is created inside chroot jail pid = /var/opt/stunnel/stunnel_server.pid # Authentication stuff verify = 2 options = NO_SSLv2 # don't forget about c_rehash CApath # it is located inside chroot jail: CApath = /etc/CApath # CRL path or file (inside chroot jail): CRLpath = /etc/crl # Some debugging stuff debug = local4.5 output = /var/opt/log/pras_test_server.log # Use it for client mode #client = no # Service-level configuration [APF] accept = 10.172.86.128:51101 connect = 127.0.0.1:50111 ----------------------------------------------END CONFIG ---------------------------------- --------------------------------------------- BEGIN LOG FILE ------------------------------- 2006.06.11 19:27:25 LOG5[8839:7]: CA CRL: Issuer: /C=US/O=VISA CRL ISSUER>, lastUpdate: Jun 9 07:00:02 2006 GMT, nextUpdate: Jun 10 08:00:02 2006 GMT 2006.06.11 19:27:25 LOG4[8839:7]: Found CRL is expired - revoking all certificates until you get updated CRL 2006.06.11 19:27:25 LOG3[8839:7]: SSL_accept: 140890B2: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned 2006.06.11 19:27:25 LOG5[8839:7]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2006.06.12 17:41:52 LOG5[8839:8]: APF connected from 10.172.86.96:35225 2006.06.12 17:41:52 LOG5[8839:8]: VERIFY OK: depth=2, /C=US/O=VISA/OU=Visa International Service Association/CN=TEST Visa Info Delivery Root CA 2006.06.12 17:41:52 LOG5[8839:8]: CA CRL: Issuer: /C=US/O=VISA CRL ISSUER>, , lastUpdate: Jun 9 07:00:02 2006 GMT, nextUpdate: Jun 10 08:00:02 2006 GMT 2006.06.12 17:41:52 LOG4[8839:8]: Found CRL is expired - revoking all certificates until you get updated CRL 2006.06.12 17:41:52 LOG3[8839:8]: SSL_accept: 140890B2: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned 2006.06.12 17:41:52 LOG5[8839:8]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2006.06.12 23:01:08 LOG5[8839:9]: APF connected from 10.172.86.96:35371 2006.06.12 23:01:08 LOG5[8839:9]: VERIFY OK: depth=2, <VISA CA> 2006.06.12 23:01:08 LOG5[8839:9]: CA CRL: Issuer: /C=US/O=VISA CRL ISSUER>, lastUpdate: Jun 9 07:00:02 2006 GMT, nextUpdate: Jun 10 08:00:02 2006 GMT 2006.06.12 23:01:08 LOG4[8839:9]: Found CRL is expired - revoking all certificates until you get updated CRL 2006.06.12 23:01:08 LOG3[8839:9]: SSL_accept: 140890B2: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned 2006.06.12 23:01:08 LOG5[8839:9]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket ------------------------------------------- END LOG FILE -------------------------------------- On 2006-06-12, at 22:17, Nagasundaram, Sekhar wrote: > We download crls everyday from a CRL server using LDAP and a cronjob. > These CRLs are stored in the CRLpath directory along with its hash. > It appears that the stunnel is not refreshing its cache, and it > still shows "Found CRL is expired - revoking all certificates until > you get updated CRL" when we try to connect to it even though there is > a > New and valid CRL in the CRLPath folder. Is there a special option > In Stunnel configuration for it to recognize/cache/add the new hash > file Just to make sure: the problem disappears after restarting stunnel, right? The simple workaround could be disabling all SSL caches: ./configure --with-threads=fork make clean make make install Can you send your stunnel.conf and debug log? TIA, Mike Sekhar Nagasundaram <<Nagasundaram, Sekhar.vcf>>

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Modifying STunnel to use OpenSSL FIPS
by David Gillingham 13 Jun '06

13 Jun '06

As part of an internal project at work, I'm investigating a Windows tunneling solution using STunnel. As a requirement of my work, I am to modify STunnel to use OpenSSL's FIPS APIs. And, with only a couple of speedbumps, I was able to achieve this. However I'd like to make my code a little more robust--to provide some notification to the user if OpenSSL's FIPS mode is active or not. To this point I've not been able to figure out a way to do this. In my copy of the STunnel source, I've modified the routine ssl_init() in ssl.c to make a call to FIPS_mode_set(1) (as demonstrated on page 33 of http://www.openssl.org/docs/fips/UserGuide-1.0.pdf). Below is a copy of my current copy of ssl_init(): void ssl_init(void) { /* to keep CLI structure for verify callback */ #if defined(OPENSSL_FIPS) && defined(USE_FIPS) if (!FIPS_mode_set(1)) { s_log(LOG_CRIT, "Could not set FIPS mdoe!"); } else { s_log(LOG_INFO, "In FIPS mode."); } #endif /* rest of ssl_init() from original source */ } As I've found out, the s_log calls do nothing because the STunnel window has not been displayed yet. Ideally, in the case where the FIPS_mode_set() call fails, I'd like to invoke an error handler to cause the STunnel service to fail to start. But trying to make a call to something like sslerror() caused a program crash. Any ideas on how to make these changes?

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