stunnel-users

3306 discussions

DNS SSL tunnel
by Quinn Wood 07 Feb '14

07 Feb '14

Woops, starting with the forwarded ports... 192.168.1.100 UDP/5353 -> VM UDP/53 192.168.1.100 TCP/5353 -> VM TCP/53 192.168.1.100 TCP/5667 -> VM TCP/5667 [...] I am able to get DNS replies using both of dig @192.168.1.100 -p 5353 google.com A dig @192.168.1.100 -p 5353 google.com A +tcp But dig times out when I try to use dig @192.168.1.100 -p 53 google.com A The stunnel server log is here: http://sprunge.us/deLY The stunnel client log is here: http://sprunge.us/ScAC Why this is happening? I notice the three connection attempts which seems like it's relevant to the connection resets.

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DNS SSL tunnel
by Quinn Wood 07 Feb '14

07 Feb '14

I am attempting to tunnel DNS traffic over stunnel using socat. I am following a guide[1] by the German Privacy Foundation. The client is my physical machine and the server is a VirtualBox virtual machine with three ports forwarded: 192.168.1.100 53/UDP My configs for stunnel are an exact match to the ones on the guide, and I am able to get a DNS reply using dig @IP [1] https://www.privacyfoundation.de/wiki/SSL-DNS

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Problem in stunnel log
by sawbona＠xsmail.com 06 Feb '14

06 Feb '14

Good morning: This connection was working perfectly well up until yesterday. Now it fails and I get this text in the log: (date/time snipped for brevity's sake) --- LOG5[648:980]: FIPS mode is enabled LOG5[648:980]: Configuration successful LOG5[648:2448]: Service [gmx-POP3-SSL] accepted connection from 127.0.0.1:1212 LOG5[648:2448]: connect_blocking: connected xxx.xxx.xxx.xxx:995 LOG5[648:2448]: Service [gmx-POP3-SSL] connected remote server from 192.168.1.136:1213 LOG4[648:2448]: CERT: Verification error: self signed certificate in certificate chain LOG4[648:2448]: Certificate check failed: depth=2, /C=DE/O=Deutsche Telekom AG/OU=T-TeleSec Trust Center/CN=Deutsche Telekom Root CA 2 LOG3[648:2448]: SSL_connect: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed LOG5[648:2448]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket --- What has happened? I have not changed anything ... This is the stunnel.conf bit: --- [gmx-POP3-SSL] client = yes accept = 20995 connect = pop.gmx.net:995 CAfile = peer-gmx-POP3-SSL.pem verify = 3 [gmx-smtp-SSL] client = yes accept = 20465 connect = mail.gmx.net:465 [gmx-IMAP-SSL] client = yes accept = 20993 connect = imap.gmx.net:993 --- Is it 'me' or is it 'them'? Thanks in advance for any input. Best regards.

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Stunnel - how to make Google App Engine HTTP into HTTPS ?
by Shamun Toha Md 06 Feb '14

06 Feb '14

I have Google App Engine running in HTTP (port tcp 80), which is a daemon based service it execute back-end some python instances. Now all that works over HTTP , TCP 80, and Google App Engine itself do not have any kind of HTTPS setup, it has to be organized externally. Therefore, the biggest problem is now that how can i use stunnel to resolve this problem please? I have already tried following setup and it does not work at all. 1) if the user visit https://www.mysite.com then he hit stunnel accept=443 after that he is connected with connect=80 but user browser change into http:// instead of remaining in https:// . Which make the whole thing not working $ uname -a Linux server2 2.6.32-358.23.2.el6.x86_64 #1 SMP Wed Oct 16 18:37:12 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ cat /etc/stunnel/stunnel.conf pid = /stunnel.pid cert=/etc/stunnel/abyhu.crt CAfile=/etc/stunnel/abyhu.ca key=/etc/stunnel/abyhu.key sslVersion = all ;socket = l:TCP_NODELAY=1 ;socket = r:TCP_NODELAY=1 client=no debug = 7 output = /var/log/stunnel.log [SSL] accept=443 connect=80 TIMEOUTclose = 0 My goal is: when user visit https://www.mysite.com it remain as https not become http:// then it is not solving the problem cause Google app engine do not have HTTPS Thank you. Best regards

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Re: [stunnel-users] cross compiling stunnel-4.21 for ARM
by josealf＠rocketmail.com 03 Feb '14

03 Feb '14

Krinali, Looks like firefox can't connect to port 443 on your target IP. Are you sure there is no firewall enabled on your board? Regards, Jose -----Original Message----- From: Krinali Shah - PES <krinali.shah(a)einfochips.com> Date: Mon, 3 Feb 2014 16:47:39 To: <josealf(a)rocketmail.com> Subject: Re: [stunnel-users] cross compiling stunnel-4.21 for ARM Hi Jose, Thank you so much for your suggestion. Firefox is giving an error like "Problem Loading Page". (Plase find attached snapshot for your reference). Note - I have made sure that there are no proxy settings on firefox. Thanks, Krinali Shah ----- Original Message ----- From: josealf(a)rocketmail.com To: "Krinali Shah - PES" <krinali.shah(a)einfochips.com>, "stunnel-users" <stunnel-users-bounces(a)stunnel.org>, stunnel-users(a)stunnel.org Sent: Monday, February 3, 2014 4:21:49 PM Subject: Re: [stunnel-users] cross compiling stunnel-4.21 for ARM Krimnali, 1. Exactly which error is giving Firefox? It will give you an error if the certificate subject does not match the URL (in this case the IP). And of course, it will also complain if the certificate is self signed and/or the signing CA is unknown. 2. Why are you using such an updated stunnel version? 3. You can use openssl s_client command to troubleshoot. Google for it. Regards, Jose -----Original Message----- From: Krinali Shah - PES <krinali.shah(a)einfochips.com> Sender: "stunnel-users" <stunnel-users-bounces(a)stunnel.org> Date: Mon, 3 Feb 2014 15:34:28 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] cross compiling stunnel-4.21 for ARM _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users --------------------------------------------------------------------------------------------- Notice: This message has been scanned by Trend Micro Mail Security scanner and is believed to be clean --------------------------------------------------------------------------------------------- ************************************************************************************************************************************************************* eInfochips Business Disclaimer : This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated. Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. ************************************************************************************************************************************************************* --------------------------------------------------------------------------------------------- Notice: This message has been scanned by Trend Micro Mail Security scanner and is believed to be clean ---------------------------------------------------------------------------------------------

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cross compiling stunnel-4.21 for ARM
by Krinali Shah - PES 03 Feb '14

03 Feb '14

----- Forwarded Message ----- From: "Krinali Shah - PES" <krinali.shah(a)einfochips.com> To: stunnel-users(a)stunnel.org Sent: Monday, February 3, 2014 3:04:44 PM Subject: cross compiling stunnel-4.21 for ARM Hi All, I have thttpd server cross-compiled for my ARM based embedded board. Now I want to add the support for https services on my board, so I think of using stunnel with openssl. I have already download source code of openssl and cross compiled it, for linux-arm. I have downloaded stunnel-4.21 and followed the steps as mentioned below. 1. create stunnel.pem file inside /etc/ssl/certs/stunnel.pem 2. create stunnel.conf file inside /etc/stunnel/stunnel.conf with following parameters. cert = /etc/ssl/certs/stunnel.pem key = /etc/ssl/certs/stunnel.pem chroot = /var/run/stunnel setuid = stunnel4 setgid = stunnel4 debug = 7 pid = /stunnel.pid setuid = stunnel setgid = stunnel socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 compression = rle output = /var/log/stunnel4/stunnel.log client = no [https] accept = 10.103.2.104:443 connect = 127.0.0.1:8080 TIMEOUTclose = 0 2. ./configure --prefix=/home/stunnel --host=arm-linux --enable-shared --with-ssl=/home 3. changed CC, RANLIB and STRIP environment variables for cross compilation in Makefile. 4. make 5. sudo make install The cross-compiled binary stunnel is installed. When I run the binary on board, it does not show any error. Following debug messages are seen on screen. 1969.12.31 21:19:54 LOG6[1154:1073842296]: Compression enabled using rle method 1969.12.31 21:19:54 LOG7[1154:1073842296]: RAND_status claims sufficient entropG 1969.12.31 21:19:54 LOG7[1154:1073842296]: PRNG seeded successfully 1969.12.31 21:19:54 LOG7[1154:1073842296]: Certificate: /etc/ssl/certs/stunnel.m 1969.12.31 21:19:54 LOG7[1154:1073842296]: Certificate loaded 1969.12.31 21:19:54 LOG7[1154:1073842296]: Key file: /etc/ssl/certs/stunnel.pem 1969.12.31 21:19:54 LOG7[1154:1073842296]: Private key loaded 1969.12.31 21:19:54 LOG7[1154:1073842296]: SSL context initialized for service s But, If I try to request https service from web browser (Firefox) ie, https://server_ip it gives me error. Meaning https server is not started correctly, still something is missing. Please guide me if you have any clues. Any help would be highly appreciated. Thanks, Krinali Shah ************************************************************************************************************************************************************* eInfochips Business Disclaimer : This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated. Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. ************************************************************************************************************************************************************* --------------------------------------------------------------------------------------------- Notice: This message has been scanned by Trend Micro Mail Security scanner and is believed to be clean ---------------------------------------------------------------------------------------------

2 1

Connect to Outlook.com SMTP with stunnel
by Tenhult Server 30 Jan '14

30 Jan '14

Hi, i'm trying to send mail with the help of stunnel but i get STARTTLS expected, what is wrong with my setup? File: stunnel.conf [outlook-smtp] protocol = smtp accept = 127.0.0.1:25 connect = smtp-mail.outlook.com:587 Log 2014.01.26 13:59:03 LOG5[1536]: stunnel 5.00 on x86-pc-msvc-1500 platform 2014.01.26 13:59:03 LOG5[1536]: Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013 ... ... 2014.01.26 13:59:16 LOG6[2428]: Server-mode smtp protocol negotiations started 2014.01.26 13:59:16 LOG7[2428]: RFC 2487 detected 2014.01.26 13:59:16 LOG7[2428]: <- 220 BLU0-SMTP180.phx.gbl Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Sun, 26 Jan 2014 04:59:07 -0800 2014.01.26 13:59:16 LOG7[2428]: -> 220 BLU0-SMTP180.phx.gbl Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Sun, 26 Jan 2014 04:59:07 -0800 + stunnel 2014.01.26 13:59:16 LOG7[2428]: <- EHLO Fredrik-Laptop 2014.01.26 13:59:16 LOG7[2428]: -> 250-EHLO Fredrik-Laptop Welcome 2014.01.26 13:59:16 LOG7[2428]: -> 250 STARTTLS 2014.01.26 13:59:16 LOG7[2428]: <- MAIL FROM: <mymail(a)live.com> 2014.01.26 13:59:16 LOG3[2428]: STARTTLS expected 2014.01.26 13:59:16 LOG5[2428]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2014.01.26 13:59:16 LOG7[2428]: Remote socket (FD=520) closed 2014.01.26 13:59:16 LOG7[2428]: Local socket (FD=540) closed 2014.01.26 13:59:16 LOG7[2428]: Service [outlook-smtp] finished (0 left) Fredrik

2 1

Specifying a username and password
by Allen Crist 30 Jan '14

30 Jan '14

I have a scanner that only has an smtp address and port #. There is no option to specify a username and password. Is there a way to configure STunnel to assist with this? Regards, Allen -- Allen Crist, Owner A+ | Network+ | Security+ | MCITP/MCSA: Windows Server 2008 *CCW Technology Computer Repair*Serving Home & Small Business Customers since 2008 (801)410-0203 http://www.ccwtech.com http://www.facebook.com/CCWTechnology

1 0

Filename is not cached for later editing
by Javier 24 Jan '14

24 Jan '14

Hi, Scenario in Windows. I found today that, when you specify a configuration file different from the standard file name, you can't edit it through "Configuration>Edit stunnel.conf". Stunnel tries to edit stunnel.conf, and, if not found, creates a new one through notepad. This doesn't affect to the reload function, where the configuration file specified is used for reload. Also, this is not important, because in most cases is used the default file name, but maybe could be implemented the ability to change those menu options to display the current configuration file name used instead the standard. Let's say we use a configuration file named xxx.conf. The menu may change to "Edit xxx.conf" and "Reload xxx.conf" instead "Edit stunnel.conf" and "Reload stunnel.conf". This may be interesting for when we have several services installed and identify them better. Regards.

4 9

Additional certificate (like openssl s_server -dkey/-dcert)
by Lapo Luchini 24 Jan '14

24 Jan '14

Is it possible to configure STunnel to support "additional" certificate like OpenSSL s_Server's -dkey/-dcert parameters, in order to support ECDSA in addition to RSA on the same connection? -- Lapo Luchini - http://lapo.it/ “Two can keep a secret if one is dead.” (anonymous)

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