- stunnel-users - stunnel.org

stunnel 4.42 released
by Michal Trojnara 18 Aug '11

18 Aug '11

Dear Users, I have released version 4.42 of stunnel. This is a security bugfix release. Upgrade is highly recommended! The ChangeLog entry: Version 4.42, 2011.08.18, urgency: HIGH: * New features - New verify level 0 to request and ignore peer certificate. This feature is useful with the new Windows GUI menu to save cached peer certificate chains, as SSL client certificates are not sent by default. - Manual page has been updated. - Removed support for changing Windows Service name with "service" option. * Bugfixes - Fixed a heap corruption vulnerability in versions 4.40 and 4.41. It may possibly be leveraged to perform DoS or remote code execution attacks. - The -quiet commandline option was applied to *all* message boxes. - Silent install (/S option) no longer attempts to create stunnel.pem. Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.42.tar.gz: d33c407bfc4f58070e818081bd082c38f91cab7691ccbb794da63143c535de3b Best regards, Mike

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stunnel transparent mode
by Julian D. Seifert 18 Aug '11

18 Aug '11

Hi List, I have a little issue trying to get stunnel running for encapsulating an existing service with SSL. We are running a really old legacy ircd service and would like to provide SSL for the users without having to actually hack that into the really old code base. (Yes we could just use another more modern software but let's just say there are "political" reasons as to why this is not an option) For an ircd we need transparency as in "the ircd should think the connection is not coming from localhost") ANYWAY... so I am working with stunnel 4.39 right now. First a question if I understand it correctly how stunnel will work. I have the ircd running on IP1:6667. I created a service section like this. [ircd] accept = 7000 connect = 6667 transparent = source (And applied the iptables/routing related stuff mentioned in the documentation) Should this already work? Will stunnel "manipulate" packets so that the IRCD "sees" connections from the Peers IP's? And will the Answers the ircd sends to the peers get "intercepted" by stunnel so it can "remanipulate" the answers into the SSL connection? If I try it like I get "local_bind (original port): Cannot assign requested address (99) stunnel" and clients get connection abort. Or is this what "transparent = both" is for? With 4.39 I had an issue trying to use "transparent = both". Stunnel always displayed an error message saying "Each service must define two endpoints" (more or less). I got it to compile by commenting out the one line in options.c causing the error... #### snip #### } else { /* standalone mode checks */ if((unsigned int)section->option.accept + (unsigned int)section->option.program + (unsigned int)section->option.remote + (unsigned int)section->option.sni #ifndef USE_WIN32 + (unsigned int)section->option.transparent_dst #endif /* USE_WIN32 */ !=2) { section_error(last_line, section->servname, "Each service must define two endpoints"); return 0; } ### snap ### Commented out the line within the ifndef. Anyway... I hope somebody can clarify for me how stunnel works and what transparent mode is the one I need. (I want to transparently provide the ircd service with connections so it seems they are directly from the peers and not from stunnel(localhost)) regards, Julian Seifert -- I hate mondays...

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[Sebastian.Leske@sleske.name: Bug#637932: stunnel4: segfault if certificate file cannot be read during verification]
by Rodrigo Gallardo 17 Aug '11

17 Aug '11

----- Forwarded message from Sebastian Leske <Sebastian.Leske(a)sleske.name> ----- Date: Mon, 15 Aug 2011 21:21:05 +0200 Package: stunnel4 Version: 3:4.40-1 Severity: normal I use certificate verification with stunnel4 (verify=2 in stunnel.conf). I accidentally changed the access rights of a PEM file required for verification to be unreadable. As a consequence, stunnel4 incorrectly reports "Verification error: self signed certificateVerification error: self signed certificate" (the cert in question is not self-signed), then segfaults. With stunnel4 version 4.29-1_i386, this does not occur: stunnel4 correctly reports that it cannot access the PEM file. Log and backtrace (generated with setting foreground=yes in stunnel.conf): Starting program: /usr/bin/stunnel4 /etc/stunnel/stunnel.conf [Thread debugging using libthread_db enabled] 2011.08.15 21:16:54 LOG5[9584:3082946768]: stunnel 4.40 on i486-pc-linux-gnu platform 2011.08.15 21:16:54 LOG5[9584:3082946768]: Compiled/running with OpenSSL 1.0.0d 8 Feb 2011 2011.08.15 21:16:54 LOG5[9584:3082946768]: Threading:PTHREAD SSL:ENGINE Auth:LIBWRAP Sockets:POLL,IPv6 2011.08.15 21:16:54 LOG5[9584:3082946768]: Reading configuration from file /etc/stunnel/stunnel.conf 2011.08.15 21:16:54 LOG6[9584:3082946768]: Compression enabled using zlib method 2011.08.15 21:16:54 LOG6[9584:3082946768]: Initializing SSL context for service pop3sl 2011.08.15 21:16:54 LOG6[9584:3082946768]: SSL context initialized 2011.08.15 21:16:54 LOG6[9584:3082946768]: Initializing SSL context for service https 2011.08.15 21:16:54 LOG6[9584:3082946768]: SSL context initialized 2011.08.15 21:16:54 LOG6[9584:3082946768]: Initializing SSL context for service ssmtp 2011.08.15 21:16:54 LOG6[9584:3082946768]: SSL context initialized 2011.08.15 21:16:54 LOG5[9584:3082946768]: Configuration successful [New Thread 0xb7fdfb70 (LWP 9593)] 2011.08.15 21:16:57 LOG5[9584:3086875504]: Service pop3sl accepted connection from 127.0.0.1:60903 2011.08.15 21:16:57 LOG6[9584:3086875504]: connect_blocking: connecting 213.187.93.221:995 2011.08.15 21:16:57 LOG5[9584:3086875504]: connect_blocking: connected 213.187.93.221:995 2011.08.15 21:16:57 LOG5[9584:3086875504]: Service pop3sl connected remote server from 192.168.1.101:39914 2011.08.15 21:16:57 LOG4[9584:3086875504]: CERT: Verification error: self signed certificate in certificate chain 2011.08.15 21:16:57 LOG4[9584:3086875504]: Certificate check failed: depth=2, /C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA 2011.08.15 21:16:57 LOG3[9584:3086875504]: error queue: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb7fdfb70 (LWP 9593)] 0xb7ca2119 in ?? () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 (gdb) bt #0 0xb7ca2119 in ?? () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 #1 0xb7ca3c1b in calloc () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 #2 0x0804cd20 in ?? () #3 0x080574bf in ?? () #4 0x08057529 in ?? () #5 0x08058129 in ?? () #6 0x0804d945 in ?? () #7 0x0804e79b in ?? () #8 0x0804fafe in ?? () #9 0xb7f98c39 in start_thread () from /lib/i386-linux-gnu/i686/cmov/libpthread.so.0 #10 0xb7d0196e in clone () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 (gdb) -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (500, 'testing'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.0.0-1-686-pae (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages stunnel4 depends on: ii adduser 3.110 add and remove users and groups ii libc6 2.13-10 Embedded GNU C Library: Shared lib ii libssl1.0.0 1.0.0d-3 SSL shared libraries ii libwrap0 7.6.q-16 Wietse Venema's TCP wrappers libra ii netbase 4.34 Basic TCP/IP networking system ii openssl 1.0.0d-3 Secure Socket Layer (SSL) binary a ii perl-modules 5.12.4-2 Core Perl modules stunnel4 recommends no packages. Versions of packages stunnel4 suggests: pn logcheck-database <none> (no description available) -- no debconf information ----- End forwarded message ----- -- Rodrigo Gallardo

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Sending "LOGOUT" when using StartTLS offloading?
by Markus Borst 17 Aug '11

17 Aug '11

I have to cope with a very unusual imap server behavior, but maybe stunnel can help me: Can stunnel send an imap command ("XX LOGOUT"), just before closing the tcp session? Setup: I use stunnel for SSL/TLS offloading, both via extra port (993) and StartTLS emulation (143). Our imap server (Mercury) has a very peculiar feature: If a tcp connection is closed without properly closing the imap session first (LOGOUT), the server discards certain attributes, specifically, it "forgets" all deletions since last logout. Since many imap clients just tear down the connection in certain cases (for example Thunderbird going into offline mode, many webmailers or stunnel reaching it's "TIMEOUTidle"), this causes mails to be undeleted. We currently use an older version of the mailserver, since only the newest is broken. Needless to say, this does not go well with our users. A fixed version of the imap server may never come, so, until we can switch all users to a new mail system: Is it possible to use stunnel to send an additional imap command before closing the tcp connection (something like "999 LOGOUT")? The command should be sent no matter why the connection is closed, either because the client closed it, a timeout is reached or stunnel is unloaded. If the connection is already cleanly logged out, this doesn't matter, in all other situations it would help. Would it be possible to send such a command, or could this be added as a new feature? Greetings Markus Borst -- ==== Achtung! Umzug: neuer Raum: ==== TU Darmstadt Hochschulrechenzentrum (HRZ) Markus Borst S4/14/2.4.06 Adresse: Mornewegstr. 30 64293 Darmstadt Tel.: 06151/16-2056 Email: M.Borst(a)hrz.tu-darmstadt.de

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SIP encryption with stunnel
by margot.basa 16 Aug '11

16 Aug '11

Hello all, I would like to know if stunnel is able to encrypt a SIP message (UDP or TCP => TLS...) For example: Terminal A can send/receive SIP messages on transport layer UDP or TCP but not TLS. Server B can send/receive SIP messages only in TLS. If terminal A sends a SIP REGISTER message to Server B, does stunnel is able to intercept the message and transform it ? port 5060 => port 5061 TCP => TLS sip uri => sips uri Do you think it's possible with stunnel ? Thank you very much for your input. Regards Une messagerie gratuite, garantie à vie et des services en plus, ça vous tente ? Je crée ma boîte mail www.laposte.net

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Stunnel and CryptoAPI
by ratmahat＠hush.ai 15 Aug '11

15 Aug '11

Hello everyone! I have an interesting question, which i didn't find any answer to after several searches. 1. What if I want to enable client verification with client certificate provided by smart card? Is it possible? 2. Does stunnel has the capability to access Windows certificate store in order to verificate the client certificate with the CA in the store? If anyone ever dealt with this, I'd really appreciate this. Thanks, Rat.

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Odd stunnel problem
by Tristan Schmelcher 09 Aug '11

09 Aug '11

My company uses stunnel on a telecom product and we have run into a strange problem. One of our customers sees an issue every couple weeks where the stunnel process becomes busted. Attempts to establish a connection through stunnel to any host hang indefinitely. Interface stats indicate that stunnel sends and receives a flurry of packets--as if a TLS connection was successfully established--but the local plaintext socket connection to stunnel never passes data. For example, if attempting to run telnet over stunnel, the telnet client just sits there and doesn't write anything to the terminal. During this time the network is otherwise functioning fine. Unfortunately nothing is logged by stunnel when this happens and we haven't been able to reproduce the problem in a controlled environment. Does anyone have any ideas what might be happening? We currently use stunnel 4.35 with debug = warning, sslVersion = TLSv1, and verify = 2.

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stunnel for android
by dddfr 09 Aug '11

09 Aug '11

Hi, I want to use stunnel server in Android Phone ,I don't know how to use it,can you tell me? Thanks! 2011-08-10 dddfr

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doubts with stunnel.conf
by Gabriel Monnerat 09 Aug '11

09 Aug '11

Hello, I am noob in stunnel and I trying configure my environment but I have one problem. My stunnel.conf is: foreground = yes output = /srv/slapgrid/slappart1/var/log/stunnel.log pid = /srv/slapgrid/slappart1/var/run/stunnel.pid syslog = no debug = 7 foreground = yes delay = yes client = yes socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 key = /srv/slapgrid/slappart1/srv/ca/private/mykey.key cert = /srv/slapgrid/slappart1/srv/ca/certs/mycert.crt [varnish_SOFTINST-51] accept = 10.0.235.44:26012 connect = [2a01:e34:ec03:*:*:*:*:*]:15000 In the stunnel compilation the option "--enable-ipv6" was used. And ipv6 address is one zope server to connect using https I have this traceback: 2011.08.09 00:19:51 LOG7[12724:140272018274048]: local socket: FD=7 allocated (non-blocking mode) 2011.08.09 00:19:51 LOG7[12724:140272018274048]: Service varnish_SOFTINST-51 accepted FD=7 from 10.0.235.44:39673 2011.08.09 00:19:51 LOG7[12724:140272018409232]: Service varnish_SOFTINST-51 started 2011.08.09 00:19:51 LOG7[12724:140272018409232]: Option TCP_NODELAY set on local socket 2011.08.09 00:19:51 LOG5[12724:140272018409232]: Service varnish_SOFTINST-51 accepted connection from 10.0.235.44:39673 2011.08.09 00:19:59 LOG3[12724:140272018409232]: Error resolving '[2a01:e34:ec03:*:*:*:*:*]': Neither nodename nor servname known (EAI_NONAME) 2011.08.09 00:19:59 LOG3[12724:140272018409232]: No host resolved 2011.08.09 00:19:59 LOG5[12724:140272018409232]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.08.09 00:19:59 LOG7[12724:140272018409232]: Service varnish_SOFTINST-51 finished (0 left) 2011.08.09 00:19:59 LOG7[12724:140272018409232]: str_stats: 0 block(s), 0 byte(s) 2011.08.09 00:20:09 LOG7[12724:140272018274048]: local socket: FD=7 allocated (non-blocking mode) 2011.08.09 00:20:09 LOG7[12724:140272018274048]: Service varnish_SOFTINST-51 accepted FD=7 from 10.0.235.44:39675 2011.08.09 00:20:09 LOG7[12724:140272018409232]: Service varnish_SOFTINST-51 started 2011.08.09 00:20:09 LOG7[12724:140272018409232]: Option TCP_NODELAY set on local socket 2011.08.09 00:20:09 LOG5[12724:140272018409232]: Service varnish_SOFTINST-51 accepted connection from 10.0.235.44:39675 2011.08.09 00:20:14 LOG7[12724:140272018274048]: Dispatching signals from the signal pipe 2011.08.09 00:20:14 LOG5[12724:140272018274048]: Received signal 15; terminating 2011.08.09 00:20:14 LOG7[12724:140272018274048]: str_stats: 0 block(s), 0 byte(s) 2011.08.09 00:20:14 LOG7[12724:140272018274048]: removing pid file /srv/slapgrid/slappart1/var/run/stunnel.pid Please, someone can help me? maybe I am doing stupid things.. thanks in advance -- Gabriel M. Monnerat

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Stunnel 4.41 dies after a while
by René Plattner 08 Aug '11

08 Aug '11

Hi, I have compiled version 4.41 with xforwarded-for patch successfully for our webmail system (Stunnel <-> Haproxy <-> Horde Webmail). After a while the stunnel daemon dies and following message appears in log: Aug 8 12:05:06 vlb2 [local3.err] stunnel: LOG3[3231:3085343632]: SSL_accept: 140760FC: error:140760FC:SSL routines: SSL23_GET_CLIENT_HELLO:unknown protocol Any ideas/suggestions? OS: Centos 5.5 openssl: 0.9.8e-12.el5_5.7 Configuration: ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = all ; Disable SSLv2 options = NO_SSLv2 ; List of allowed Ciphers ciphers = ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH ; Disable FIPS fips = no ; Some security enhancements for UNIX systems - comment them out on Win32 setuid = nobody setgid = nobody chroot = /usr/local/var/lib/stunnel/ ; PID is created inside chroot jail pid = /stunnel-webmail.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Option for Dummy MSIE TIMEOUTclose=0 ; Option for errorness SSL implementation options = DONT_INSERT_EMPTY_FRAGMENTS ; Some debugging stuff useful for troubleshooting debug = local3.4 ; Run as Daemon foreground = no ; Service-level configuration [https] cert = z1.pem accept = ip1:443 connect = p1 xforwardedfor = yes [https] cert = z2.pem accept = ip2:443 connect = p2 xforwardedfor = yes [wmt] cert = z3.pem accept = ip3:443 connect = p3 xforwardedfor = yes regards René Plattner

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Tray icon options
by Sebastian Rose-Indorf 08 Aug '11

08 Aug '11

Hello, many thanks for the new Stunnel versions! I have installed 4.42b3 manually (Vista SP2 64 bit). The tray icon options "Edit stunnel.conf" and "Reload stunnel.conf" do not find the conf file, and the option "Manual" has no effect. At program start Stunnel finds the Conf file without problems (start link: "drive1/path1/stunnel.exe drive2/path2/stunnel.conf"). Greetings seb

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Re: [stunnel-users] webmail compose page get expire and logout
by jayesh.shinde 08 Aug '11

08 Aug '11

Hi Ludolf , Sorry for my previous typing mistake , There is *no* firewall rules between any of my 3 servers My problem is when I open webmail with https:// and compose any email and click on send button then page is getting expire and I am getting logout. Kindly note that my other webmail pages with https:// are working properly. Where as with http:// the compose email and send works properly without any problem. That is if I open the webmail vai stunnel https config then only problem comes. So I am searching solution and config option with the same. Let me know if any config info require from my end. I am checking out with the option which you have suggested and will reply you shortly. Regards Jayesh Shinde On 08/08/2011 01:02 PM, Ludolf Holzheid wrote: > On Mon, 2011-08-08 12:30:03 +0530, jayesh.shinde wrote: >> > >> > [..] >> > >> > I checked by defining the TIMEOUTs but I am not able to figure out why >> > the page is getting expire and I am getting logout ? >> > There is firewall rule between any servers. > I didn't fully understand your problem, but if your secured tunnel > crosses a stateful firewall (e.g. a NAT router), you might try to > switch on TCP keepalive: > > socket = l:SO_KEEPALIVE=1 > > You might also play with the TCP_KEEP* socket options. > > HTH, > > 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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webmail compose page get expire and logout
by jayesh.shinde 08 Aug '11

08 Aug '11

Dear All , I am trying to setup a load balancing under webmail on my test servers. Here is my setup details :-- Total server are 3 servers. i.e ( 2 backend webmail server and 1 front server ) On one server I have installed haproxy-1.4.15.tar.gz + stunnel-4.41.tar.gz with http:// and https:// Another two servers are installed with squirrelmail . my problem:-- ========== 1) When I access the webmail by https://webmail.domain.com and compose any email and click on send button , the page is getting expire and I am getting log out from webmail. In Firefox there is no error on browser , where as in internet explorer I am getting below error with popup window :-- *Error Popup* :-- ============ "do you want to view only the webpage content that was deliver securely. This webpage contain the content that will not be delivered using the secure HTTPS connection, which could compromise the security of entire webpage." Where as if I check with http://webmail.domain.com , then the mail compose and send work properly. Here is the stunnel.conf :-- =================== [root@jayesh ~]# cat /etc/stunnel/stunnel.conf cert=/opt/ssl/ssl.key/mail_domain_com.crt key=/opt/ssl/ssl.key/domain.key setuid=stunnel setgid=stunnel pid=/var/run/stunnel/stunnel.pid output = /var/log/stunnel.log debug = 7 socket=l:TCP_NODELAY=1 socket=r:TCP_NODELAY=1 [https] accept=192.168.30.200:443 connect=192.168.30.200:81 TIMEOUTclose = 0 session = 600 TIMEOUTbusy = 600 TIMEOUTclose = 300 TIMEOUTconnect = 600 I checked by defining the TIMEOUTs but I am not able to figure out why the page is getting expire and I am getting logout ? There is firewall rule between any servers. Please suggest me and guide on this issue. I am stuck here. Regards Jayesh Shinde

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anyone got a port for android?
by Jason Haar 05 Aug '11

05 Aug '11

Hi there Exchange email doesn't work on Android for us because we have a requirement for using client certs to protect the ActiveSync over HTTPS transactions. If I had stunnel, I could sync with localhost and stunnel could do the client cert-foo.... So does anyone know of a working stunnel implementation for Android (or even something else that does the same job?) Thanks -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +64 3 9635 377 Fax: +64 3 9635 417 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1

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FreeBSD upgrading to 4.41 (Dispatching signals from the signal pipe)
by Nicolas de Bari Embriz Garcia Rojas 04 Aug '11

04 Aug '11

Hi, I just upgrade stunner on a FreeBSD server from 4.35 to 4.41 using the ports, I restarted the server and notice that stunnel was not listen to any port, I had to manually restart it so it could work again. I increased the debug to 7 and got this when booting: 2011.08.04 17:44:58 LOG7[1123:675287360]: Dispatching signals from the signal pipe 2011.08.04 17:44:58 LOG5[1123:675287360]: Received signal 15; terminating 2011.08.04 17:44:58 LOG7[1123:675287360]: str_stats: 0 block(s), 0 byte(s) 2011.08.04 17:44:58 LOG7[1123:675287360]: removing pid file /stunnel.pid 2011.08.04 17:45:29 LOG7[682:675287360]: No limit detected for the number of clients 2011.08.04 17:45:29 LOG7[682:675287360]: signal_pipe: FD=3 allocated (non-blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: signal_pipe: FD=4 allocated (non-blocking mode) 2011.08.04 17:45:29 LOG5[682:675287360]: stunnel 4.41 on i386-portbld-freebsd8.2 platform 2011.08.04 17:45:29 LOG5[682:675287360]: Compiled/running with OpenSSL 1.0.0d 8 Feb 2011 2011.08.04 17:45:29 LOG5[682:675287360]: Threading:PTHREAD SSL:ENGINE Auth:LIBWRAP Sockets:POLL,IPv4 2011.08.04 17:45:29 LOG5[682:675287360]: Reading configuration from file /usr/local/etc/stunnel/stunnel.conf 2011.08.04 17:45:29 LOG7[682:675287360]: PRNG seeded successfully 2011.08.04 17:45:29 LOG6[682:675287360]: Initializing SSL context for service ssmtp 2011.08.04 17:45:29 LOG7[682:675287360]: Certificate: /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Certificate loaded 2011.08.04 17:45:29 LOG7[682:675287360]: Key file: /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Private key loaded 2011.08.04 17:45:29 LOG7[682:675287360]: Could not load DH parameters from /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Using hardcoded DH parameters 2011.08.04 17:45:29 LOG7[682:675287360]: DH initialized with 2048-bit key 2011.08.04 17:45:29 LOG7[682:675287360]: ECDH initialized with curve prime256v1 2011.08.04 17:45:29 LOG7[682:675287360]: SSL options set: 0x00000004 2011.08.04 17:45:29 LOG6[682:675287360]: SSL context initialized 2011.08.04 17:45:29 LOG6[682:675287360]: Initializing SSL context for service ssmtp2 2011.08.04 17:45:29 LOG7[682:675287360]: Certificate: /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Certificate loaded 2011.08.04 17:45:29 LOG7[682:675287360]: Key file: /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Private key loaded 2011.08.04 17:45:29 LOG7[682:675287360]: Could not load DH parameters from /usr/local/etc/stunnel/smtp.inbox.pem 2011.08.04 17:45:29 LOG7[682:675287360]: Using hardcoded DH parameters 2011.08.04 17:45:29 LOG7[682:675287360]: DH initialized with 2048-bit key 2011.08.04 17:45:29 LOG7[682:675287360]: ECDH initialized with curve prime256v1 2011.08.04 17:45:29 LOG7[682:675287360]: SSL options set: 0x00000004 2011.08.04 17:45:29 LOG6[682:675287360]: SSL context initialized 2011.08.04 17:45:29 LOG5[682:675287360]: Configuration successful 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=5 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=6 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=6 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=7 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=7 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=8 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=8 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=9 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=9 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: libwrap_init: FD=10 allocated (blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: accept socket: FD=11 allocated (non-blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: Option SO_REUSEADDR set on accept socket 2011.08.04 17:45:29 LOG7[682:675287360]: Service ssmtp bound to 0.0.0.0:465 2011.08.04 17:45:29 LOG7[682:675287360]: Service ssmtp opened FD=11 2011.08.04 17:45:29 LOG7[682:675287360]: accept socket: FD=12 allocated (non-blocking mode) 2011.08.04 17:45:29 LOG7[682:675287360]: Option SO_REUSEADDR set on accept socket 2011.08.04 17:45:29 LOG7[682:675287360]: Service ssmtp2 bound to 0.0.0.0:587 2011.08.04 17:45:29 LOG7[682:675287360]: Service ssmtp2 opened FD=12 2011.08.04 17:45:29 LOG7[688:675287360]: Created pid file /stunnel.pid 2011.08.04 17:45:42 LOG7[688:675287360]: Dispatching signals from the signal pipe 2011.08.04 17:45:42 LOG7[688:675287360]: Service ssmtp closed FD=11 2011.08.04 17:45:42 LOG7[688:675287360]: Service ssmtp2 closed FD=12 This is my conf: cert = /usr/local/etc/stunnel/smtp.inbox.pem chroot = /usr/local/var/stunnel setuid = stunnel setgid = stunnel pid = /stunnel.pid debug = 7 output = /stunnel.log client = no foreground = no ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [ssmtp] accept = 465 connect = 25 [ssmtp2] accept = 587 connect = 25 Any ideas of what could it be wrong? the last 2 lines of the boot log tell me that the ports i specify are been closed but why? 2011.08.04 17:45:42 LOG7[688:675287360]: Dispatching signals from the signal pipe 2011.08.04 17:45:42 LOG7[688:675287360]: Service ssmtp closed FD=11 2011.08.04 17:45:42 LOG7[688:675287360]: Service ssmtp2 closed FD=12 thanks in advance. regards

2 1

(no subject)
by Nicolas de Bari Embriz Garcia Rojas 04 Aug '11

04 Aug '11

1 0

STunnel NTLM Proxy problem
by Subhash Sharma 04 Aug '11

04 Aug '11

Has anyone use Stunnel to works with NTLM proxy? I am using Stunnel 4.35 on window It works fine straught and basic proxy but fails to use NTLM proxy. My config for NTLM is like this ---------------- configuration --------------------- [https] accept = someport connect = proxy:proxy_port protocol = connect protocolAuthentication = NTLM protocolHost = dest:dest_port protocolUsername = domain\username protocolPassword = password ----------------------------------------------------- I checked the traffic using the win shark -----------------win shark for stunnel ----------------- CONNECT dest:destport HTTP/1.1 , NTLMSSP_AUTH, User: \domain\username Proxy-Authorization: NTLM some long string NTLM Secure Service Provider NTLMSSP identifier: NTLMSSP NTLM Message Type: NTLMSSP_AUTH (0x00000003) Lan Manager Response: Empty NTLM Response: 951842e95a3e1a0001d8ac6fb2980a004b82ffa75232795d … Domain name: NULL User name: domain\username … ------------------------------------------------------ STunnel is not sending the domain and sends the user name consisting of domain and username. When IE is configured to use NLM proxy, traffic is as -------------- win shark for IE ----------------------------- CONNECT dest:destport HTTP/1.1 , NTLMSSP_AUTH, User: domain\username Proxy-Authorization: NTLM some long string NTLM Secure Service Provider NTLMSSP identifier: NTLMSSP NTLM Message Type: NTLMSSP_AUTH (0x00000003) Lan Manager Response: 10f2d8147a2651de00000000000000000000000000000000 … NTLM Response: 951842e95a3e1a0001d8ac6fb2980a004b82ffa75232795d … Domain name: domain … User name: username .. Host name: host -------------------------------------------------------------- ---- stunnel log --------------- 2011.08.04 10:11:16 LOG7[2384:5480]: Service https started 2011.08.04 10:11:16 LOG7[2384:5480]: Option TCP_NODELAY set on local socket 2011.08.04 10:11:16 LOG5[2384:5480]: Service https accepted connection from 127.0.0.1:9913 2011.08.04 10:11:16 LOG7[2384:5480]: remote socket: FD=1456 allocated (non-blocking mode) 2011.08.04 10:11:16 LOG6[2384:5480]: connect_blocking: connecting 172.23.11.161:8080 2011.08.04 10:11:16 LOG7[2384:5480]: connect_blocking: s_poll_wait 172.23.11.161:8080: waiting 10 seconds 2011.08.04 10:11:16 LOG5[2384:5480]: connect_blocking: connected 172.23.11.161:8080 2011.08.04 10:11:16 LOG5[2384:5480]: Service https connected remote server from 172.23.11.45:9914 2011.08.04 10:11:16 LOG7[2384:5480]: Remote FD=1456 initialized 2011.08.04 10:11:16 LOG7[2384:5480]: Option TCP_NODELAY set on remote socket 2011.08.04 10:11:16 LOG5[2384:5480]: Negotiations for connect (client side) started 2011.08.04 10:11:16 LOG7[2384:5480]: -> CONNECT 172.23.11.35:443 HTTP/1.1 2011.08.04 10:11:16 LOG7[2384:5480]: -> Host: 172.23.11.35:443 2011.08.04 10:11:16 LOG7[2384:5480]: -> Proxy-Connection: keep-alive 2011.08.04 10:11:16 LOG7[2384:5480]: -> Proxy-Authorization: NTLM TlRMTVNTUAABAAAAAgIAAA== 2011.08.04 10:11:16 LOG7[2384:5480]: -> 2011.08.04 10:11:16 LOG7[2384:5480]: <- HTTP/1.1 407 Proxy Authentication Required 2011.08.04 10:11:16 LOG7[2384:5480]: <- Server: FreeProxy/4.50 2011.08.04 10:11:16 LOG7[2384:5480]: <- Date: Thu, 04 Aug 2011 17:11:16 GMT 2011.08.04 10:11:16 LOG7[2384:5480]: <- Content-Type: text/html 2011.08.04 10:11:16 LOG7[2384:5480]: <- Transfer-Encoding: Chunked 2011.08.04 10:11:16 LOG7[2384:5480]: <- Proxy-Authenticate: NTLM TlRMTVNTUAACAAAAAAAAADgAAAACAgACATR6TVahgFIAAAAAAAAAAAAAAAA4AAAABQLODgAAAA8= 2011.08.04 10:11:16 LOG7[2384:5480]: <- Proxy-Connection: Keep-Alive 2011.08.04 10:11:16 LOG7[2384:5480]: <- 2011.08.04 10:11:16 LOG7[2384:5480]: -> CONNECT 172.23.11.35:443 HTTP/1.1 2011.08.04 10:11:16 LOG7[2384:5480]: -> Host: 172.23.11.35:443 2011.08.04 10:11:16 LOG7[2384:5480]: -> Proxy-Authorization: NTLM TlRMTVNTUAADAAAAAAAAAGwAAAAYABgAQAAAAAAAAABsAAAAFAAUAFgAA......1jDUOrcoBBus0aPbH44onfcpGZvdW5kc3RvbmVccHN5cy1udGxt 2011.08.04 10:11:16 LOG7[2384:5480]: -> 2011.08.04 10:11:16 LOG7[2384:5480]: <- 7E5 2011.08.04 10:11:16 LOG3[2384:5480]: CONNECT request rejected 2011.08.04 10:11:16 LOG7[2384:5480]: <- <html> 2011.08.04 10:11:16 LOG7[2384:5480]: <- 2011.08.04 10:11:16 LOG5[2384:5480]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.08.04 10:11:16 LOG7[2384:5480]: Service https finished (0 left) 2011.08.04 10:11:16 LOG7[2384:5480]: str_stats: 0 block(s), 0 byte(s) -------------------------------- Please help!!! Subhash Sharma

1 0

silent install of windows stunnel
by Laurent Licour 04 Aug '11

04 Aug '11

stunnel use NSIS as installer and it is possible to use /S switch to run silent install However, even in this mode, openssl configuration tools is executed and prompt for certificate informations. I think that executign this tools should be skip in silent mode -- Laurent LICOUR

2 2

stunnel OK without "transparent = source", with = timeout problem
by Elodie BOSSIER 03 Aug '11

03 Aug '11

Greetings again, Thanks so much to have updated the manual about SNI, my stunel works correctly. But i have a tiny problem, when i visit my webserver, the SERVER['REMOTE_ADDR'] with PHP isn't the ip adress of the visitor but the IP of the stunnel. I have read the manual about this transparent proxy and i don't sucess with the configuration. This is my config file : pid = /stunnel.pid options = NO_SSLv2 transparent = source [virtual] accept = 443 cert = /usr/local/openssl/etc/CERTIFICATES/www.franceserv.fr_cert.cert key = /usr/local/openssl/etc/PRIVATE_KEYS/www.franceserv.fr_key.pem connect = www.franceserv.fr:80 [sni1] sni = virtual:elodie.franceserv.com cert = /etc/ssl-fsh/cert-elodie.franceserv.com.pem key = /etc/ssl-fsh/key-franceserv.key connect = elodie.franceserv.com:80 [sni2] sni = virtual:befun.franceserv.com cert = /etc/ssl-fsh/cert-befun.franceserv.com.pem key = /etc/ssl-fsh/key-franceserv.key connect = befun.franceserv.com:80 It's don't work, i have a timeout with my browser. With iptables, i have set this : iptables -t mangle -N DIVERT iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT iptables -t mangle -A DIVERT -j MARK --set-mark 1 iptables -t mangle -A DIVERT -j ACCEPT ip rule add fwmark 1 lookup 100 ip route add local 0.0.0.0/0 dev lo table 100 echo 0 > /proc/sys/net/ipv4/conf/lo/rp_filter echo 1 > /proc/sys/net/ipv4/ip_forward My stunnel is on the server 192.168.0.20 and the webserver on 192.168.0.2 I try to follow the help of http://www.stunnel.org/static/stunnel.html#service_level_options with : transparent = none | source | destination | both (Unix only) Could you tell me what i make wrong please ?

2 4

Failed to run 2 instances of windows service (error 1053)
by Laurent Licour 03 Aug '11

03 Aug '11

I have to run at the same time on the same windows host, 2 instances of stunnel : a client instance and a server instance I have 2 config files : stunnel-client.conf , stunnel-server.conf Each configuration works, but not at the same time. I can install 2 services (with differents service name), but i can't start both services at the same time. I have to stop the first one to start the second one stunnel.exe -install stunnel-client.conf stunnel.exe -install stunnel-server.conf stunnel.exe -start stunnel-client.conf stunnel.exe -start stunnel-server.conf --> error 1053 stunnel.exe -stop stunnel-client.conf stunnel.exe -start stunnel-server.conf stunnel.exe -start stunnel-client.conf --> error 1053 It is also not possible to start the both configurations directly (no service mode). test run with stunnel 4.42b2 on windows XPe and Win2008R2 -- Laurent LICOUR

2 1

Failed to run 2 instances of windows service (error 1053)
by Laurent Licour 01 Aug '11

01 Aug '11

I have to run at the same time on the same windows host, 2 instances of stunnel : a client instance and a server instance I have 2 config files : stunnel-client.conf , stunnel-server.conf Each configuration works, but not at the same time. I can install 2 services (with differents service name), but i can't start both services at the same time. I have to stop the first one to start the second one stunnel.exe -install stunnel-client.conf stunnel.exe -install stunnel-server.conf stunnel.exe -start stunnel-client.conf stunnel.exe -start stunnel-server.conf --> error 1053 stunnel.exe -stop stunnel-client.conf stunnel.exe -start stunnel-server.conf stunnel.exe -start stunnel-client.conf --> error 1053 It is also not possible to start the both configurations directly (no service mode). test run with stunnel 4.42b2 on windows XPe and Win2008R2 -- Laurent LICOUR

1 0

Re: [stunnel-users] Stunnel on the same machine
by subrata＠indiatimes.com 01 Aug '11

01 Aug '11

The configuration files are : pid = /var/stunnel.pid ;chroot = /var/lib/stunnel setuid = nobody setgid = nobody foreground =yes ; 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 [mysqls] accept = 3307 connect = 192.168.1.6:3307 On 192.168.1.6 ---------------------- pid = /var/stunnel.pid setuid =nobody setgid = nobody foreground = yes client = no ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 465 connect = 25 [mysqls] accept =3307 connect =3306 connecting like /usr/local/mysql/bin/mysql -h 127.0.0.1 -u root -p -P 3307 Enter password: On entring password the following lines appear : ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 104 Subrata ----- Original Message ----- From: Brian Hatch <bri(a)stunnel.org> To: subrata(a)indiatimes.com Sent: Sun, 7 Oct 2007 10:02:17 +0530 (IST) Subject: Re: [stunnel-users] Stunnel on the same machine Near 2007-10-05 22:17 +0530, subrata(a)indiatimes.com insisted: > After starting stunnel and connecting the mysql client/usr/local/mysql/bin/mysql -h 127.0.0.1 -u root -p the flow gets stuck at the Enter password prompt any suggestions how to proceed from there. What do your stunnel configuration files look like? Other problem: mysql client may decide to use a local domain socket when connecting to localhost, thwarting your attempts to go via Stunnel. You might want to 'strace mysql ...' and look for the connect() lines. -- Brian Hatch Time flies like an Systems and arrow. Fruit flies Security Engineer like a banana. http://www.ifokr.org/bri/ Every message PGP signed -- My life has changed. What about yours? Log on to the new Indiatimes Mail and Live out of the Inbox!

3 3

DH parameters
by yyy 30 Jul '11

30 Jul '11

Hello! How to specify custom DH parameters? There is an option for specifying ECDH curve (curve option), but not for ordinary DH. Searching man page for "DH" did not yield anything. Searching this list archive for "DH paramaeters" found only some default error messages.

2 1

Re: [stunnel-users] Problem with SNI "Specified option name is not valid here"
by Michal Trojnara 26 Jul '11

26 Jul '11

I wrote: > AFAIR SNI is supported in OpenSSL 1.0.0 and later. I will confirm it > and I will update the manual page if needed. I updated the manual: http://www.stunnel.org/static/stunnel.html Mike

1 0

stunnel 4.41 released
by Michal Trojnara 25 Jul '11

25 Jul '11

Dear Users, I have released version 4.41 of stunnel. This is a bugfix release. I highly recommend Windows users to upgrade. The ChangeLog entry: Version 4.41, 2011.07.25, urgency: MEDIUM: * Bugfixes - Fixed Windows service crash of stunnel 4.40. Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.41.tar.gz: 08e0e7df42bfb8b8551eb6c4b5b50eae6051aaf75077101d729e67c7a3a00c72 Best regards, Mike

1 0

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