stunnel-users July 2011

10 participants
18 discussions

stunnel 4.40 released
by Michal Trojnara 23 Jul '11

23 Jul '11

Dear Users, I have released version 4.40 of stunnel. The ChangeLog entry: Version 4.40, 2011.07.23, urgency: LOW: * New Win32 features - Added a GUI menu to save cached peer certificate chains. - Added "-exit" option to stop stunnel *not* running as a service. This option may be useful for scripts. - Added file version information to stunnel.exe. - A number of other GUI improvements. * Other new features - Hardcoded 2048-bit DH parameters are used as a fallback if DH parameters are not provided in stunnel.pem. - Default "ciphers" value updated to prefer ECDH: "ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH". - Default ECDH curve updated to "prime256v1". - Removed support for temporary RSA keys (used in obsolete export ciphers). Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.40.tar.gz: 91f32c7654dde0e1cf37ed0d8517e0d0b5985cd30443a9d64cd33d232b5fe9ce Best regards, Mike

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Re: [stunnel-users] 4.39 RPM
by Jack Liu 21 Jul '11

21 Jul '11

Thank you so much for making RPMs for me~=D Mr. Jack Date: Mon, 18 Jul 2011 20:20:04 -0700 From: josealf(a)rocketmail.com Subject: Re: [stunnel-users] 4.39 RPM To: jackliu92(a)hotmail.com; stunnel-users(a)stunnel.org Jack, Take a look at my RPMs for CentOS 5. These follow the same conventions as the official RPMS:- By default log to authpriv instead of daemon facility- sample config file adjusted.- I also set the /etc/init.d/stunnel init script executable Binaries were compiled with gcc 4.4. Should work on similar systems (RHEL 5, Scientific Linux 5, Oracle Linux 5 or later). You should be able to build your own binaries starting from the source rpm. My apologies if posting attachments on this list is not encouraged. Regards,Jose From: Jack Liu <jackliu92(a)hotmail.com> To: stunnel-users(a)stunnel.org Sent: Wednesday, July 13, 2011 3:14 AM Subject: [stunnel-users] 4.39 RPM Does anyone have version 4.39 RPM inst package or knows where to download it? Thank you! _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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misconfiguration of transparent proxy
by Marco Strullato 19 Jul '11

19 Jul '11

Hi all, is there any way to use stunnel to proxy a connection without using encryption? I have an application that is listening on 0.0.0.0:port but which refuses connection if not coming from localhost:port and that application is reachable only with telnet, with no encryption. I have found a possible configuration that is the following: chroot = /var/run/stunnel/ setuid = nobody setgid = nobody pid = /stunnel.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 output = /var/log/stunnel.log transparent=yes [AppSrv01] accept = 5776 connect = 4776 [AppSrv02] accept = 5777 connect = 4777 but it seems not working: that is the log. 2011.07.06 11:08:20 LOG5[30375:47349987463360]: stunnel 4.15 on x86_64-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 2011.07.06 11:08:20 LOG5[30375:47349987463360]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2011.07.06 11:08:20 LOG6[30375:47349987463360]: file ulimit = 1024 (can be changed with 'ulimit -n') 2011.07.06 11:08:20 LOG6[30375:47349987463360]: poll() used - no FD_SETSIZE limit for file descriptors 2011.07.06 11:08:20 LOG5[30375:47349987463360]: 500 clients allowed 2011.07.06 11:08:20 LOG7[30375:47349987463360]: FD 4 in non-blocking mode 2011.07.06 11:08:20 LOG7[30375:47349987463360]: FD 5 in non-blocking mode 2011.07.06 11:08:20 LOG7[30375:47349987463360]: FD 6 in non-blocking mode 2011.07.06 11:08:20 LOG7[30375:47349987463360]: SO_REUSEADDR option set on accept socket 2011.07.06 11:08:20 LOG7[30375:47349987463360]: AppSrv01 bound to 0.0.0.0:5776 2011.07.06 11:08:20 LOG7[30375:47349987463360]: FD 7 in non-blocking mode 2011.07.06 11:08:20 LOG7[30375:47349987463360]: SO_REUSEADDR option set on accept socket 2011.07.06 11:08:20 LOG7[30375:47349987463360]: AppSrv02 bound to 0.0.0.0:5777 2011.07.06 11:08:20 LOG7[30376:47349987463360]: Created pid file /stunnel.pid 2011.07.06 11:08:30 LOG7[30376:47349987463360]: AppSrv01 accepted FD=8 from 10.0.1.11:41922 2011.07.06 11:08:30 LOG7[30376:1094314304]: AppSrv01 started 2011.07.06 11:08:30 LOG7[30376:1094314304]: FD 8 in non-blocking mode 2011.07.06 11:08:30 LOG7[30376:1094314304]: TCP_NODELAY option set on local socket 2011.07.06 11:08:30 LOG7[30376:1094314304]: FD 9 in non-blocking mode 2011.07.06 11:08:30 LOG7[30376:1094314304]: FD 10 in non-blocking mode 2011.07.06 11:08:30 LOG7[30376:47349987463360]: Cleaning up the signal pipe 2011.07.06 11:08:30 LOG6[30376:47349987463360]: Child process 30384 finished with code 0 2011.07.06 11:08:30 LOG7[30376:1094314304]: Connection from 10.0.1.11:41922 permitted by libwrap 2011.07.06 11:08:30 LOG5[30376:1094314304]: AppSrv01 connected from 10.0.1.11:41922 2011.07.06 11:08:30 LOG7[30376:1094314304]: SSL state (accept): before/accept initialization 2011.07.06 11:08:43 LOG3[30376:1094314304]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol 2011.07.06 11:08:43 LOG5[30376:1094314304]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.07.06 11:08:43 LOG7[30376:1094314304]: AppSrv01 finished (0 left) and from the standard out I get: 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Snagged 64 random bytes from /home/user/.rnd 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Wrote 1024 new random bytes to /home/user/.rnd 2011.07.06 11:08:20 LOG7[30375:47349987463360]: RAND_status claims sufficient entropy for the PRNG 2011.07.06 11:08:20 LOG6[30375:47349987463360]: PRNG seeded successfully 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Certificate: /etc/stunnel/stunnel.pem 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Key file: /etc/stunnel/stunnel.pem 2011.07.06 11:08:20 LOG7[30375:47349987463360]: SSL context initialized for service AppSrv01 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Certificate: /etc/stunnel/stunnel.pem 2011.07.06 11:08:20 LOG7[30375:47349987463360]: Key file: /etc/stunnel/stunnel.pem 2011.07.06 11:08:20 LOG7[30375:47349987463360]: SSL context initialized for service AppSrv02 What happens connecting with telnet is: Trying 10.0.2.140... Connected to server. Escape character is '^]'. It seems the connection is successful but with tcpdump I see nothing and moreover I see nothing also in the application log. If I type something nothing happens. It seems that the flow is not passed to the destination port. Do you have any hint? Thanks! -- Marco

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stunnel 4.40b1
by Michal Trojnara 17 Jul '11

17 Jul '11

Dear Users, I have just added a new Windows GUI menu to save peer certificate chains. Please to give it a try and let me know if there are any issues, so I can fix them in the final stunnel 4.40: ftp://ftp.stunnel.org/stunnel/stunnel-4.40b1-installer.exe Another useful function would probably be a replacement for Unix c_rehash script. 8-) I also appreciate your comments are suggestions related to the new functionality. Best regards, Mike

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Windows 7 connection to HTTPS server
by Daniel Pierce 10 Jul '11

10 Jul '11

stunnel user group, Thanks Yucong Sun or your help. I have changed the configuration file values to the values that you recommended. I didn't read the documentation careful enough. [https] accept = 3600 connect = partnerlogin.advancedmd.com <https://partnerlogin.advancedmd.com/practicemanager/xmlrpc/processrequest.a sp> :443 (stopped and started the windows service to get the new configuration) HOWEVER I'm still not getting stunnel to provide the interface to the https web server. I have a http client software which I have tried both GET and POST calls to https://localhost:3600/practicemanager/xmlrpc/processrequest.asp <blocked::https://localhost:3600/practicemanager/xmlrpc/processrequest.asp> Every time the interface comes back with the error "The Connection to the Server was Reset while the Page was Loading" So I decided to try the page using a standard web browser (Firefox and IE) thinking that my client software may have a problem. I opened the browser and entered the address https://localhost:3600/practicemanager/xmlrpc/processrequest.asp <blocked::https://localhost:3600/practicemanager/xmlrpc/processrequest.asp> Got the same results. So I changed the configuration to go to the same web site as gmail with the following configuration. [https] accept = 3600 connect = mail.google.com:443 When I try to open the page with the browser to address https://localhost:3600/mail/?hl=en <blocked::https://localhost:3600/mail/?hl=en&shva=1#inbox> &shva=1#inbox, I get the same error message. NEXT I started WIRESHARK on the network and filtered for packets coming from/to my host computer. When I enter https://localhost:3600/mail/?hl=en <blocked::https://localhost:3600/mail/?hl=en&shva=1#inbox> &shva=1#inbox on the browser. The following details were captured by WIRESHARK. Source Destination Protocol Lenth Info 74.125.225.53 192.168.1.70 TLSV1 107 Application Data Protocol: http 192.168.1.70 74.125.255.53 TCP 54 https [ACK] Seq=1 Ack=54 win=16181 Len=0 74.125.225.53 192.168.1.70 TLSV1 112 Application Data Protocol: http 192.168.1.70 74.125.255.53 TLSV1 81 Encrypted Alert 192.168.1.70 74.125.255.53 TCP 54 60089 > https [FIN, ACK] Seq=28 Ack=112 win=16167 Len=0 192.168.1.70 74.125.255.54 TCP 1484 [TCP segment of a reassembled PDU] 192.168.1.70 74.125.255.53 TLSv1 316 Application Data 74.125.225.53 192.168.1.70 TCP 60 https > 60089 [FIN, ACK] Seq=112 Ack=29 win=196 len=0 192.168.1.70 74.125.255.53 TCP 54 60089 > https [ACK] Seq=29 Ack=113 win=16167 Len=0 74.125.225.54 192.168.1.70 TCP 60 https > 60113 [ACK] Seq=1 Ack=1693 win=285 len=0 74.125.225.54 192.168.1.70 TLSV1 457 Application Data Protocol: http 192.168.1.70 74.125.255.54 TCP 54 60113 > https [ACK] Seq=1693 Ack=404 win=16445 Len=0 SO the packets are being sent and returned, but the protocol is erroring out for GOOGLE MAIL. NEXT When I configure the service for the other https web server. https://localhost:3600/practicemanager/xmlrpc/processrequest.asp <blocked::https://localhost:3600/practicemanager/xmlrpc/processrequest.asp> I get a simular exchange, but more reference to change cipher Spec. and http RST for different ip address Source Destination Protocol Lenth Info 192.168.1.70 74.125.255.54 TCP 66 60840 > https [SYN] 74.125.225.54 192.168.1.70 TCP 66 https > 60840 [SYN, ACK] 192.168.1.70 74.125.255.54 TCP 54 60840 > https [ACK] 192.168.1.70 74.125.255.54 TLSv1 451 client Hello 74.125.225.54 192.168.1.70 TCP 60 https > 60840 [ACK] 74.125.225.54 192.168.1.70 TLSv1 97 change cipher Spec, Encrypted Handshake Message 192.168.1.70 74.125.255.54 TLSv1 162 Application Data 74.125.225.54 192.168.1.70 TCP 60 https > 60840 [ACK] 192.168.1.70 98.137.80.34 TCP 54 60819 > http [RST, ACK] STUNNEL LOG for partnerlogin.advancedmd.com:443 NO OBVIOUS ERRORS 2011.07.08 21:31:21 LOG7[4960:4568]: No limit detected for the number of clients 2011.07.08 21:31:21 LOG7[4960:4568]: make_sockets: s_socket#1: FD=144 allocated (blocking mode) 2011.07.08 21:31:21 LOG7[4960:4568]: make_sockets: s_socket#2: FD=148 allocated (blocking mode) 2011.07.08 21:31:21 LOG7[4960:4568]: make_sockets: s_accept: FD=152 allocated (non-blocking mode) 2011.07.08 21:31:21 LOG5[4960:4568]: stunnel 4.39 on x86-pc-mingw32-gnu platform 2011.07.08 21:31:21 LOG5[4960:4568]: Compiled/running with OpenSSL 1.0.0d 8 Feb 2011 2011.07.08 21:31:21 LOG5[4960:4568]: Threading:WIN32 SSL:ENGINE Auth:none Sockets:SELECT,IPv6 2011.07.08 21:31:21 LOG5[4960:4568]: Reading configuration from file stunnel.conf 2011.07.08 21:31:21 LOG7[4960:4568]: Snagged 64 random bytes from C:/.rnd 2011.07.08 21:31:22 LOG7[4960:4568]: Wrote 1024 new random bytes to C:/.rnd 2011.07.08 21:31:22 LOG7[4960:4568]: PRNG seeded successfully 2011.07.08 21:31:22 LOG7[4960:4568]: Configuration SSL options: 0x01000000 2011.07.08 21:31:22 LOG7[4960:4568]: SSL options set: 0x01000004 2011.07.08 21:31:22 LOG7[4960:4568]: Certificate: stunnel.pem 2011.07.08 21:31:22 LOG7[4960:4568]: Certificate loaded 2011.07.08 21:31:22 LOG7[4960:4568]: Key file: stunnel.pem 2011.07.08 21:31:22 LOG7[4960:4568]: Private key loaded 2011.07.08 21:31:22 LOG7[4960:4568]: SSL context initialized for service http 2011.07.08 21:31:22 LOG5[4960:4568]: Configuration successful 2011.07.08 21:31:22 LOG7[4960:4568]: accept socket: FD=144 allocated (non-blocking mode) 2011.07.08 21:31:22 LOG7[4960:4568]: Option SO_REUSEADDR set on accept socket 2011.07.08 21:31:22 LOG7[4960:4568]: Service http bound to 0.0.0.0:3600 2011.07.08 21:31:22 LOG7[4960:4568]: Service http opened FD=144 Do I need to have the Public Key Certificate for the remote serve installed in stunnel for it to access the page? I'm trying to find a simple configuration to prove out that the basic stunnel application is working. Any suggestions? Is there something basic that I'm missing? If I send a GET request, I should get a response from the https server that CONNECT is configurred for. Is there a compatibility issue between OpenSSL and https web server? Thanks in advance for the help. Dan

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problem running on Mac OS X
by athir＠nuaimi.com 07 Jul '11

07 Jul '11

Hi there. I've built stunnel on the Mac (including the patch for str.c) and have problem when I run it. Whenever it gets a request on one side (from a browser), I see the following in the log. The weird thing is that when I run stunnel in gdb it works?? 2011.07.05 17:51:00 LOG7[6300:4297842688]: Service https started 2011.07.05 17:51:00 LOG7[6300:4297842688]: Option TCP_NODELAY set on local socket 2011.07.05 17:51:00 LOG7[6300:4297842688]: Waiting for a libwrap process 2011.07.05 17:51:00 LOG7[6300:4297842688]: Acquired libwrap process #0 2011.07.05 17:51:00 LOG3[6300:4297842688]: Unexpected socket close (read_blocking) 2011.07.05 17:51:00 LOG5[6300:4297842688]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket Any advice would be appreciated. thanks Athir Nuaimi

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Windows 7 connection to HTTPS server
by Daniel Pierce 06 Jul '11

06 Jul '11

stunnel user group, I'm trying to use stunnel to connect to a secure web server to do an XML interface, but I'm having no luck. What am I missing? Environment OS = Windows 7 Ultimate stunnel version = 4.39 (latest release) stunnel installed as service and is running. Windows Firewall = OFF, but have added stunnel to the application list Anti-Virus = ESET, have disabled Web Access Protection Configuration File cert = stunnel.pem options = NO_SSLv2 debug = 7 output = c:\Program files\stunnel\stunnel.log client = yes [https] accept = 3600 connect = <https://partnerlogin.advancedmd.com/practicemanager/xmlrpc/processrequest.a sp> https://partnerlogin.advancedmd.com/practicemanager/xmlrpc/processrequest.as p ;TIMEOUTclose = 0 Log File 2011.07.06 16:00:07 LOG7[5880:6040]: No limit detected for the number of clients 2011.07.06 16:00:07 LOG7[5880:6040]: make_sockets: s_socket#1: FD=136 allocated (blocking mode) 2011.07.06 16:00:07 LOG7[5880:6040]: make_sockets: s_socket#2: FD=140 allocated (blocking mode) 2011.07.06 16:00:07 LOG7[5880:6040]: make_sockets: s_accept: FD=144 allocated (non-blocking mode) 2011.07.06 16:00:07 LOG5[5880:6040]: stunnel 4.39 on x86-pc-mingw32-gnu platform 2011.07.06 16:00:07 LOG5[5880:6040]: Compiled/running with OpenSSL 1.0.0d 8 Feb 2011 2011.07.06 16:00:07 LOG5[5880:6040]: Threading:WIN32 SSL:ENGINE Auth:none Sockets:SELECT,IPv6 2011.07.06 16:00:07 LOG5[5880:6040]: Reading configuration from file stunnel.conf 2011.07.06 16:00:07 LOG7[5880:6040]: Snagged 64 random bytes from C:/.rnd 2011.07.06 16:00:07 LOG7[5880:6040]: Wrote 1024 new random bytes to C:/.rnd 2011.07.06 16:00:07 LOG7[5880:6040]: PRNG seeded successfully 2011.07.06 16:00:07 LOG3[5880:6040]: Unknown TCP service '//partnerlogin.advancedmd.com/practicemanager/xmlrpc/processrequest.asp' 2011.07.06 16:00:07 LOG6[5880:6040]: Cannot resolve 'https://partnerlogin.advancedmd.com/practicemanager/xmlrpc/processrequest.a sp' - delaying DNS lookup 2011.07.06 16:00:07 LOG7[5880:6040]: Configuration SSL options: 0x01000000 2011.07.06 16:00:07 LOG7[5880:6040]: SSL options set: 0x01000004 2011.07.06 16:00:07 LOG7[5880:6040]: Certificate: stunnel.pem 2011.07.06 16:00:07 LOG7[5880:6040]: Certificate loaded 2011.07.06 16:00:07 LOG7[5880:6040]: Key file: stunnel.pem 2011.07.06 16:00:07 LOG7[5880:6040]: Private key loaded 2011.07.06 16:00:07 LOG7[5880:6040]: SSL context initialized for service https 2011.07.06 16:00:07 LOG5[5880:6040]: Configuration successful 2011.07.06 16:00:07 LOG7[5880:6040]: accept socket: FD=136 allocated (non-blocking mode) 2011.07.06 16:00:07 LOG7[5880:6040]: Option SO_REUSEADDR set on accept socket 2011.07.06 16:00:07 LOG7[5880:6040]: Service https bound to 0.0.0.0:3600 2011.07.06 16:00:07 LOG7[5880:6040]: Service https opened FD=136 I can open a Firefox browser and the designated URL address resolves, but stunnel cannot resolve it. Do I have the configuration wrong or is Windows 7 blocking the connection? I'm able to send an XML message from by application to 127.0.0.1:3600 and stunnel responds with a successful but EMPTY RESPONSE. Thanks in advance for your help. Dan Pierce Xpert Assist Corp.

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stunnel 4.39 released
by Michal Trojnara 06 Jul '11

06 Jul '11

Dear Users, I have just released version 4.39 of stunnel. This version includes major improvements of the Windows GUI and installer. The ChangeLog entry: Version 4.39, 2011.07.06, urgency: LOW: * New features - New Win32 installer module to build self-signed stunnel.pem. - Added configuration file editing with Windows GUI. - Added log file reopening file editing with Windows GUI. It might be useful to also implement log file rotation. - Improved configuration file reload with Windows GUI. Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.39.tar.gz: 972e4c150e3012ba8777f149c858e1e290aeb7ad7976e1551ac1752bc04fb0ed Best regards, Mike

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stunnel-users July 2011