stunnel-users

3306 discussions

Re: [stunnel-users] your mail
by Brian Hatch 09 Jan '08

09 Jan '08

At more or less 2008-01-09 18:09 +0100, khaled45(a)free.fr squalked: > ; It's often easier to use CAfile > CAfile = ca.pem > cert = userkey.pem > debug = 7 > client = no > [apache] > accept = 4433 > connect = 192.168.1.4:433 I'd suggest using the full path for your pem files above, just to be safe. Can you shoot the public keys of the client (which is not on this machine) and the ca.pem and the public key from userkey.pem (which is actually the server's key - you may wish to rename.) There are three pems involved: * the CA key (private) and cert (public) in ca.pem * the stunnel server's key (private) and cert (public) in userkey.pem. ('userkey' is a bad name here.) * the client's key (private) and cert (public) on 192.168.1.5. Can you send the public parts here so I can verify that they're signed by the appropritate folks? -- Brian Hatch "Everybody's cute! Systems and Everybody's cute! Security Engineer Even me. But in http://www.ifokr.org/bri/ purple I'm stunning!" Every message PGP signed

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TCP (Server / Client)
by khaled khaled 09 Jan '08

09 Jan '08

3 6

2 secure sockets TCP (Server / Client).
by khaled khaled 07 Jan '08

07 Jan '08

Hi all,I am a new STUNNEL user,I will do 2 secure sockets TCP (Server / Client). I would like to know how to set 'stunnel.conf. I tried but it does not work. Description: ---------- I created a CA root and from this I have created 2 pairs (key and certificate) one for the server and one for the client. You can send me please a config file from a server? Many thanks, Stunnel.config (serveur) ----------------------- ; Sample stunnel configuration file by Michal Trojnara 2002-2006; Some options used here may not be adequate for your particular configuration ; Certificate/key is needed in server mode and optional in client mode; The default certificate is provided only for testing and should not; be used in a production environment;cert = stunnel.pem;key = stunnel.pemcert = server.crt key = serverkey.key ; Some performance tuningssocket = l:TCP_NODELAY=1socket = r:TCP_NODELAY=1 CAfile = ca.crt ;[Server]accept = 192.168.1.4:4433connect = 192.168.1.4:4433 KHALED Khaled Ingénieur de télécommunications et informatique _________________________________________________________________ Votre contact a choisi Hotmail, l'e-mail nouvelle génération. Créez un compte. http://www.windowslive.fr/hotmail/default.asp

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Missing Something Basic on Config
by Steve 29 Dec '07

29 Dec '07

Using stunnel for NNTPS. Stunnel starts without any apparent problems (log looks normal), but simply doesn't intercept packets from my news reader. There is no activity in the log and sniffing the packets shows everything happening on 119. My understanding of the concept is that there are no configuration changes needed in the newsreader; IOW, I leave it pointing to the unsecured NNTP server with the port set to 119. I fear I'm missing something very obvious. BTW, I've confirmed the ability to use NNTPS with this particular server by using Outlook Express, which is compatible with NNTPS. Version: 4.20; I used the Windows binary. Running XP. Config: ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [nntps] accept = 192.168.1.101:119 connect = secure.news.easynews.com:563 Log: 2007.12.28 22:24:46 LOG5[6640:6644]: stunnel 4.20 on x86-pc-mingw32-gnu with OpenSSL 0.9.8d 28 Sep 2006 2007.12.28 22:24:46 LOG5[6640:6644]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2007.12.28 22:24:46 LOG5[6640:5936]: No limit detected for the number of clients 2007.12.28 22:24:46 LOG7[6640:5936]: FD 196 in non-blocking mode 2007.12.28 22:24:46 LOG7[6640:5936]: SO_REUSEADDR option set on accept socket 2007.12.28 22:24:46 LOG7[6640:5936]: nntps bound to 192.168.1.101:119

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Avoiding outlook express warning...
by fg 28 Dec '07

28 Dec '07

Hello all I use stunnel on a server with a stunnel.pem file generated with openSSL,( this file is not certified with verisign or others...) Each time i launch outlook express on a client a have a warning saying that the server is using a certificate who can't be verified.... I have to close this warning and after all is ok... Question Is it possible to skip this warning? perhaps with a public key approuved in outlook express??? thanks for help --------------------------------- Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail

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stunnel
by peter griep 28 Dec '07

28 Dec '07

hello i'm using stunnel with download2day,but it's not working wih grabit can you tell what i must do to work stunnel with grabit. peter

3 2

1 tunnel client to few different servers
by Shalvi Ziv 26 Dec '07

26 Dec '07

All, As my PROXY server gets requests from end-users to be proxied to several different content providers (SMS servers), I was wondering how can encrypt the traffic between the PROXY to the SMS using stunnel, but still handle the differentiation to the various content providers. Meaning, my PROXY listens on port 9090 for all incoming SMS requests and each request should be addressed to different SMS server (i.e. different content provider) based on the number the message was sent to. See following example: Client = yes [SMPP] accept = 9090 (should always be this port) connect = <SMS IP>:442 Now, how can I do it with stunnel configuration (having the <SMS IP> flexibly assigned according to other parameters in the packet)? Thanks! zivs

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Can stunnel be configured to listen for multiple IP addresses and access different email hosts?
by David Goldstein 21 Dec '07

21 Dec '07

2 1

Using stunnel as a non-root user
by T. S. Ferreira 20 Dec '07

20 Dec '07

I have a small web application running as a regular (non root) user on my port 6666. I would like to make it accessible through SSL on port 7777. In order to test it I used (as the same non root user) the following command: stunnel -D 7 -p mypemfile.pem -d 7777 -r localhost:6666 but it does not work. When I check with "ps aux | fgrep stunnel", no such program is running. However if I run it as root, it does work. I did not find in the documentation any restriction with this regard. Since my final application will run on a machine to whose root I do not have access, I would like to find a way to solve this problem. Any hint will be appreciated. -- tsf ----------------------------------------- My system data are: (1) Linux/Ubuntu 7.10, kernel 2.6.22-14-generic, (2) Output of "/usr/bin/stunnel4 -version": stunnel 4.20 on i486-pc-linux-gnu with OpenSSL 0.9.8e 23 Feb 2007 Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP Global options debug = 5 pid = /var/run/stunnel4.pid RNDbytes = 64 RNDfile = /dev/urandom RNDoverwrite = yes Service-level options cert = /etc/stunnel/stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH key = /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 (3) Output due to '-D 7' option: 2007.12.20 10:00:45 LOG7[14820:3082589872]: Snagged 64 random bytes from /home/tomasz/.rnd 2007.12.20 10:00:45 LOG7[14820:3082589872]: Wrote 1024 new random bytes to /home/tomasz/.rnd 2007.12.20 10:00:45 LOG7[14820:3082589872]: RAND_status claims sufficient entropy for the PRNG 2007.12.20 10:00:45 LOG7[14820:3082589872]: PRNG seeded successfully 2007.12.20 10:00:45 LOG7[14820:3082589872]: Certificate: jai_ssl.pem 2007.12.20 10:00:45 LOG7[14820:3082589872]: Certificate loaded 2007.12.20 10:00:45 LOG7[14820:3082589872]: Key file: jai_ssl.pem 2007.12.20 10:00:45 LOG7[14820:3082589872]: Private key loaded 2007.12.20 10:00:45 LOG7[14820:3082589872]: SSL context initialized for service stunnel3 (4)"/usr/bin/stunnel" is a Perl script whose comments say " ... wrapper to use stunnel 3.x syntax in stunnel >=4.05 ..."; it is version 2.00 (2005.04.2).

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Stunnel never really connects
by Pat Riehecky 20 Dec '07

20 Dec '07

I am trying to send email over stunnel from a client that doesn't support encryption to a server that does. The local socket opens just fine, but it never really seems to connect to the remote server. A tcpdump shows only three packets exchanged between the two systems (Syn, Syn/Ack, Ack). The behavior is the same regardless of which tls enabled port I point stunnel at. I am able to connect to these ports via telnet and send email so I know the connection can be negotiated. I am using the 4.21 build for windows (XP SP2) found on the main webpage. Help! --- stunnel.conf --- ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Workaround for Eudora bug ; my email client isn't eudora, but given how ; it doesn't support standards like encrypted ; transport..... options = DONT_INSERT_EMPTY_FRAGMENTS ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = yes [smtp] accept = 127.0.0.1:25 connect = mailserver.mydomain.tld:587 ;connect = mailserver.mydomain.tld:465 ;connect = mailserver.mydomain.tld:25 protocol = smtp

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