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Re: [stunnel-users] Réf. : Re: Réf. : Re: Réf. : Re: Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Leandro Avila 04 May '11

04 May '11

Hi Laurent, Good to see you figured out the issue. I also learned more things myself. Thanks Jose ! To my knowledge cipher suites that use SHA2 are part of the TLS 1.2 specification but I don't think OpenSSL has that implemented. Cheers ---------------- Leandro Avila ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wednesday, May 4, 2011 11:02 AM Subject: [stunnel-users] Réf. : Re: Réf. : Re: Réf. : Re: Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Hi everyone, It's ok now i have found the solution i add the root and intermediate certificate of verisign in my Capath and i use in s_client the option -CApath and now it's ok : New, TLSv1/SSLv3, Cipher is DES-CBC-SHA Server public key is 2048 bit Compression: NONE Expansion: NONE SSL-Session: Protocol : SSLv3 Cipher : DES-CBC-SHA Session-ID: XXXXXXXXXXX Session-ID-ctx: Master-Key: XXXXXXXXXXXXXXXXXXXX Key-Arg : None Start Time: 1304524805 Timeout : 7200 (sec) Verify return code: 0 (ok) but i have another question: How can i test the SHA-2? i search the cipher corresponding in SHA-2 but i didn't found it. Thanks for your help. Regards, Laurent UK Laurent UK Analyste PROTOCOLES RBIS - DBF PBMF2 DOMAINE PMF202 ELECTRONIC FILES 41, rue de Valmy - 93100 Montreuil - ACI CME04B1 Bureau 4226 Tel: 01.58.16.86.45 (68645) 04/05/2011 15:36 Pour josealf(a)rocketmail.com cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Réf. : Re: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHALien Jose, thanks you, i use my client certificate but have another error now : 1028202:error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library:dso_dlfcn.c:162:filename(libz.so): Could not load module . System error: No such file or directory 1028202:error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:244: Enter pass phrase for /opt/freeware/etc/stunnel/keystore/crl-3skey.pem: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv3 write client hello A SSL_connect:SSLv3 read server hello A depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=27:certificate not trusted verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=21:unable to verify the first certificate verify return:1 SSL_connect:SSLv3 read server certificate A SSL_connect:SSLv3 read server certificate request A SSL_connect:SSLv3 read server done A SSL_connect:SSLv3 write client certificate A SSL_connect:SSLv3 write client key exchange A SSL_connect:SSLv3 write certificate verify A SSL_connect:SSLv3 write change cipher spec A SSL_connect:SSLv3 write finished A SSL_connect:SSLv3 flush data SSL_connect:SSLv3 read finished A --- Certificate chain 0 s:/C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3 1 s:/C=ww/O=swift/OU=personalid/OU=bnpafrpp/CN=crl-3skey-ebics-ts i:/O=SWIFT --- Server certificate -----BEGIN CERTIFICATE----- XXXXXXXXXXXXXXXXXX -----END CERTIFICATE----- subject=/C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com issuer=/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3 --- No client certificate CA names sent --- SSL handshake has read 2633 bytes and written 1732 bytes --- New, TLSv1/SSLv3, Cipher is AES256-SHA Server public key is 2048 bit Compression: NONE Expansion: NONE SSL-Session: Protocol : SSLv3 Cipher : AES256-SHA Session-ID: XXXXXXXXXXXXXXXXXX Session-ID-ctx: Master-Key: XXXXXXXXXXXXXXXXXX Key-Arg : None Start Time: 1304515751 Timeout : 7200 (sec) Verify return code: 21 (unable to verify the first certificate) --- Do you know the reason of this error? Maybe i have to add the first certificate file to a specific folder ? Regards, Laurent UK Internet josealf(a)rocketmail.com 04/05/2011 15:09 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, We need to present a client certificate to the server. That's the important part missing. Do that by adding -cert your_cert_filename to the command, like: openssl s_client -ssl3 -state -cert your_client_cert_filename -connect your-stunnel-ip:10443 See http://www.openssl.org/docs/apps/s_client.html Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 6:55:19 AM Subject: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, thanks you for your response, i use the openssl s_client command but i have the following error : 1499296:error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library:dso_dlfcn.c:162:filename(libz.so): Could not load module . System error: No such file or directory 1499296:error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:244: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv3 write client hello A SSL_connect:SSLv3 read server hello A depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=27:certificate not trusted verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=21:unable to verify the first certificate verify return:1 SSL_connect:SSLv3 read server certificate A SSL_connect:SSLv3 read server certificate request A SSL_connect:SSLv3 read server done A SSL3 alert write:warning:no certificate SSL_connect:SSLv3 write client certificate A SSL_connect:SSLv3 write client key exchange A SSL_connect:SSLv3 write change cipher spec A SSL_connect:SSLv3 write finished A SSL_connect:SSLv3 flush data SSL3 alert read:fatal:handshake failure SSL_connect:failed in SSLv3 read finished A 1499296:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1060:SSL alert number 40 1499296:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: is it normal? Thanks. Regards. Laurent UK Internet josealf(a)rocketmail.com 04/05/2011 13:38 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Ideally, you should terminate the SSL connection on your final server. But that's not the problem here. It should work as is. Mosty likely the problem is on the client SSL software you are using to connect to stunnel. The cipher you are trying to use DESC-CBC-SHA works with SSLv3 and TLSv1. Can you force your client to use those protocols? Maybe it is trying to negotiate SSLv2. Also are you sure it is speaking SSL instead of plain text? You can test your connection to stunnel server with openssl s_client command. Example openssl s_client -ssl3 -state -connect your-stunnel-ip:10443 openssl s_client -tls1 -state -connect your-stunnel-ip:10443 if this works, we found the culprit. Regards Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 2:05:07 AM Subject: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, I use 2 servers in my configuration: the first one who listenning on the port 10443 (where we receive encrypted traffic from software using ssl) and the second one who listenning the port 10016 (where we receive decrypted traffic). The first one receive the encrypted traffic, it decrypted it and send it to the second server that's why i only use the server mode on my fist server. Do you think that i also need to change this configuration? Cordialement, Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 19:18 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, I'm not sure you are connecting the dots right. I see an stunnel server configuration. In this case, your stunnel is a front-end to a service you run on host XXXX port 10016. What is that service? Is stunnel running on the same host? Note that If stunnel is not running on the same host with IP XXXX, then you may have some traffic in clear text in your network (from the device running stunnel to the device hosting the service on port 10016). You need a client to connect to the stunnel server. Unless your client support SSL natively, you also should have an stunnel running on your client device with entries like these: client=yes [pestip] accept = 10443 connect = Your-Stunnel-server-IP:10443 In this case your client apps connects locally to port 10443, traffic is encrypted and sent to your server listening on port 10443, where it is decripted and send to IP XXXX port 10016. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tue, May 3, 2011 10:48:11 AM Subject: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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Re: [stunnel-users] Réf. : Re: Réf. : Re: Réf. : Re: Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Jose Alf. 04 May '11

04 May '11

Laurent, Everything looks fine to me. Your were connected to the server using SSLv3 and AES256-SHA ciphers. The zlib error can be ignored. Message "Verify return code: 21 (unable to verify the first certificate)" indicates that openssl s_client was unable to verify the server certificate. You can get rid of this by giving the CAPath in the paremters and making sure the verisign root Ca cert is there. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 8:36:16 AM Subject: Réf. : Re: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, thanks you, i use my client certificate but have another error now : 1028202:error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library:dso_dlfcn.c:162:filename(libz.so): Could not load module . System error: No such file or directory 1028202:error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:244: Enter pass phrase for /opt/freeware/etc/stunnel/keystore/crl-3skey.pem: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv3 write client hello A SSL_connect:SSLv3 read server hello A depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=27:certificate not trusted verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=21:unable to verify the first certificate verify return:1 SSL_connect:SSLv3 read server certificate A SSL_connect:SSLv3 read server certificate request A SSL_connect:SSLv3 read server done A SSL_connect:SSLv3 write client certificate A SSL_connect:SSLv3 write client key exchange A SSL_connect:SSLv3 write certificate verify A SSL_connect:SSLv3 write change cipher spec A SSL_connect:SSLv3 write finished A SSL_connect:SSLv3 flush data SSL_connect:SSLv3 read finished A --- Certificate chain 0 s:/C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3 1 s:/C=ww/O=swift/OU=personalid/OU=bnpafrpp/CN=crl-3skey-ebics-ts i:/O=SWIFT --- Server certificate -----BEGIN CERTIFICATE----- XXXXXXXXXXXXXXXXXX -----END CERTIFICATE----- subject=/C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com issuer=/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3 --- No client certificate CA names sent --- SSL handshake has read 2633 bytes and written 1732 bytes --- New, TLSv1/SSLv3, Cipher is AES256-SHA Server public key is 2048 bit Compression: NONE Expansion: NONE SSL-Session: Protocol : SSLv3 Cipher : AES256-SHA Session-ID: XXXXXXXXXXXXXXXXXX Session-ID-ctx: Master-Key: XXXXXXXXXXXXXXXXXX Key-Arg : None Start Time: 1304515751 Timeout : 7200 (sec) Verify return code: 21 (unable to verify the first certificate) --- Do you know the reason of this error? Maybe i have to add the first certificate file to a specific folder ? Regards, Laurent UK Internet josealf(a)rocketmail.com 04/05/2011 15:09 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, We need to present a client certificate to the server. That's the important part missing. Do that by adding -cert your_cert_filename to the command, like: openssl s_client -ssl3 -state -cert your_client_cert_filename -connect your-stunnel-ip:10443 See http://www.openssl.org/docs/apps/s_client.html Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 6:55:19 AM Subject: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, thanks you for your response, i use the openssl s_client command but i have the following error : 1499296:error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library:dso_dlfcn.c:162:filename(libz.so): Could not load module . System error: No such file or directory 1499296:error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:244: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv3 write client hello A SSL_connect:SSLv3 read server hello A depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=27:certificate not trusted verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=21:unable to verify the first certificate verify return:1 SSL_connect:SSLv3 read server certificate A SSL_connect:SSLv3 read server certificate request A SSL_connect:SSLv3 read server done A SSL3 alert write:warning:no certificate SSL_connect:SSLv3 write client certificate A SSL_connect:SSLv3 write client key exchange A SSL_connect:SSLv3 write change cipher spec A SSL_connect:SSLv3 write finished A SSL_connect:SSLv3 flush data SSL3 alert read:fatal:handshake failure SSL_connect:failed in SSLv3 read finished A 1499296:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1060:SSL alert number 40 1499296:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: is it normal? Thanks. Regards. Laurent UK Internet josealf(a)rocketmail.com 04/05/2011 13:38 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Ideally, you should terminate the SSL connection on your final server. But that's not the problem here. It should work as is. Mosty likely the problem is on the client SSL software you are using to connect to stunnel. The cipher you are trying to use DESC-CBC-SHA works with SSLv3 and TLSv1. Can you force your client to use those protocols? Maybe it is trying to negotiate SSLv2. Also are you sure it is speaking SSL instead of plain text? You can test your connection to stunnel server with openssl s_client command. Example openssl s_client -ssl3 -state -connect your-stunnel-ip:10443 openssl s_client -tls1 -state -connect your-stunnel-ip:10443 if this works, we found the culprit. Regards Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 2:05:07 AM Subject: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, I use 2 servers in my configuration: the first one who listenning on the port 10443 (where we receive encrypted traffic from software using ssl) and the second one who listenning the port 10016 (where we receive decrypted traffic). The first one receive the encrypted traffic, it decrypted it and send it to the second server that's why i only use the server mode on my fist server. Do you think that i also need to change this configuration? Cordialement, Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 19:18 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, I'm not sure you are connecting the dots right. I see an stunnel server configuration. In this case, your stunnel is a front-end to a service you run on host XXXX port 10016. What is that service? Is stunnel running on the same host? Note that If stunnel is not running on the same host with IP XXXX, then you may have some traffic in clear text in your network (from the device running stunnel to the device hosting the service on port 10016). You need a client to connect to the stunnel server. Unless your client support SSL natively, you also should have an stunnel running on your client device with entries like these: client=yes [pestip] accept = 10443 connect = Your-Stunnel-server-IP:10443 In this case your client apps connects locally to port 10443, traffic is encrypted and sent to your server listening on port 10443, where it is decripted and send to IP XXXX port 10016. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tue, May 3, 2011 10:48:11 AM Subject: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement.

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Re: [stunnel-users] Réf. : Re: Réf. : Re: Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Jose Alf. 04 May '11

04 May '11

Laurent, We need to present a client certificate to the server. That's the important part missing. Do that by adding -cert your_cert_filename to the command, like: openssl s_client -ssl3 -state -cert your_client_cert_filename -connect your-stunnel-ip:10443 See http://www.openssl.org/docs/apps/s_client.html Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 6:55:19 AM Subject: Réf. : Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, thanks you for your response, i use the openssl s_client command but i have the following error : 1499296:error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library:dso_dlfcn.c:162:filename(libz.so): Could not load module . System error: No such file or directory 1499296:error:25070067:DSO support routines:DSO_load:could not load the shared library:dso_lib.c:244: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv3 write client hello A SSL_connect:SSLv3 read server hello A depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=27:certificate not trusted verify return:1 depth=0 /C=FR/ST=PARIS/L=PARIS/O=BNP PARIBAS/OU=RBIS_PMF202/CN=psp-exp.bnpparibas.com verify error:num=21:unable to verify the first certificate verify return:1 SSL_connect:SSLv3 read server certificate A SSL_connect:SSLv3 read server certificate request A SSL_connect:SSLv3 read server done A SSL3 alert write:warning:no certificate SSL_connect:SSLv3 write client certificate A SSL_connect:SSLv3 write client key exchange A SSL_connect:SSLv3 write change cipher spec A SSL_connect:SSLv3 write finished A SSL_connect:SSLv3 flush data SSL3 alert read:fatal:handshake failure SSL_connect:failed in SSLv3 read finished A 1499296:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1060:SSL alert number 40 1499296:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: is it normal? Thanks. Regards. Laurent UK Internet josealf(a)rocketmail.com 04/05/2011 13:38 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Ideally, you should terminate the SSL connection on your final server. But that's not the problem here. It should work as is. Mosty likely the problem is on the client SSL software you are using to connect to stunnel. The cipher you are trying to use DESC-CBC-SHA works with SSLv3 and TLSv1. Can you force your client to use those protocols? Maybe it is trying to negotiate SSLv2. Also are you sure it is speaking SSL instead of plain text? You can test your connection to stunnel server with openssl s_client command. Example openssl s_client -ssl3 -state -connect your-stunnel-ip:10443 openssl s_client -tls1 -state -connect your-stunnel-ip:10443 if this works, we found the culprit. Regards Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 2:05:07 AM Subject: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, I use 2 servers in my configuration: the first one who listenning on the port 10443 (where we receive encrypted traffic from software using ssl) and the second one who listenning the port 10016 (where we receive decrypted traffic). The first one receive the encrypted traffic, it decrypted it and send it to the second server that's why i only use the server mode on my fist server. Do you think that i also need to change this configuration? Cordialement, Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 19:18 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, I'm not sure you are connecting the dots right. I see an stunnel server configuration. In this case, your stunnel is a front-end to a service you run on host XXXX port 10016. What is that service? Is stunnel running on the same host? Note that If stunnel is not running on the same host with IP XXXX, then you may have some traffic in clear text in your network (from the device running stunnel to the device hosting the service on port 10016). You need a client to connect to the stunnel server. Unless your client support SSL natively, you also should have an stunnel running on your client device with entries like these: client=yes [pestip] accept = 10443 connect = Your-Stunnel-server-IP:10443 In this case your client apps connects locally to port 10443, traffic is encrypted and sent to your server listening on port 10443, where it is decripted and send to IP XXXX port 10016. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tue, May 3, 2011 10:48:11 AM Subject: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement.

1 0

Re: [stunnel-users] Réf. : Re: Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Jose Alf. 04 May '11

04 May '11

Laurent, Ideally, you should terminate the SSL connection on your final server. But that's not the problem here. It should work as is. Mosty likely the problem is on the client SSL software you are using to connect to stunnel. The cipher you are trying to use DESC-CBC-SHA works with SSLv3 and TLSv1. Can you force your client to use those protocols? Maybe it is trying to negotiate SSLv2. Also are you sure it is speaking SSL instead of plain text? You can test your connection to stunnel server with openssl s_client command. Example openssl s_client -ssl3 -state -connect your-stunnel-ip:10443 openssl s_client -tls1 -state -connect your-stunnel-ip:10443 if this works, we found the culprit. Regards Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Wed, May 4, 2011 2:05:07 AM Subject: Réf. : Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Jose, I use 2 servers in my configuration: the first one who listenning on the port 10443 (where we receive encrypted traffic from software using ssl) and the second one who listenning the port 10016 (where we receive decrypted traffic). The first one receive the encrypted traffic, it decrypted it and send it to the second server that's why i only use the server mode on my fist server. Do you think that i also need to change this configuration? Cordialement, Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 19:18 Pour Laurent UK cc stunnel-users(a)stunnel.org, stunnel-users-bounces(a)stunnel.org Objet Re: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, I'm not sure you are connecting the dots right. I see an stunnel server configuration. In this case, your stunnel is a front-end to a service you run on host XXXX port 10016. What is that service? Is stunnel running on the same host? Note that If stunnel is not running on the same host with IP XXXX, then you may have some traffic in clear text in your network (from the device running stunnel to the device hosting the service on port 10016). You need a client to connect to the stunnel server. Unless your client support SSL natively, you also should have an stunnel running on your client device with entries like these: client=yes [pestip] accept = 10443 connect = Your-Stunnel-server-IP:10443 In this case your client apps connects locally to port 10443, traffic is encrypted and sent to your server listening on port 10443, where it is decripted and send to IP XXXX port 10016. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tue, May 3, 2011 10:48:11 AM Subject: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement.

1 0

Re: [stunnel-users] Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Jose Alf. 03 May '11

03 May '11

Laurent, I'm not sure you are connecting the dots right. I see an stunnel server configuration. In this case, your stunnel is a front-end to a service you run on host XXXX port 10016. What is that service? Is stunnel running on the same host? Note that If stunnel is not running on the same host with IP XXXX, then you may have some traffic in clear text in your network (from the device running stunnel to the device hosting the service on port 10016). You need a client to connect to the stunnel server. Unless your client support SSL natively, you also should have an stunnel running on your client device with entries like these: client=yes [pestip] accept = 10443 connect = Your-Stunnel-server-IP:10443 In this case your client apps connects locally to port 10443, traffic is encrypted and sent to your server listening on port 10443, where it is decripted and send to IP XXXX port 10016. Regards, Jose ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tue, May 3, 2011 10:48:11 AM Subject: Réf. : Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement.

1 0

Re: [stunnel-users] Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by Leandro Avila 03 May '11

03 May '11

Hi, If you have control of both ends of the connection make sure your SSL version is consistent on both sides. I would not recomend using sslVersion = all Either set it to SSLv3 or TLSv1 DES-CBC-SHA is supported under those However, judging for the cipher you are choosing I assume you might be dealing with a legacy application and you might not have access to both ends of the connection. I would try setting only one version at the time and moving down from TLSv1, SSLv3 and SSLv2 sslVersion = ciphers = DES-CBC-SHA Cheers ----------------- Leandro Avila ________________________________ From: "laurent.uk(a)bnpparibas.com" <laurent.uk(a)bnpparibas.com> To: josealf(a)rocketmail.com Cc: stunnel-users(a)stunnel.org; stunnel-users-bounces(a)stunnel.org Sent: Tuesday, May 3, 2011 10:48 AM Subject: [stunnel-users] Réf. : Re: need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Dear Jose, here is the configuration file of my stunnel : ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /opt/freeware/etc/stunnel/ca_nopass.pem foreground = yes syslog = yes ; Protocol version (all, SSLv2, SSLv3, TLSv1) ;sslVersion = SSLv2 sslVersion = all ;ciphers = DES-CBC-SHA ;ciphers = DES-CBC3-SHA:IDEA-CBC-MD5 ; Some security enhancements for UNIX systems - comment them out on Win32 ;chroot = /usr/local/stunnel/var/lib/stunnel ;chroot = /tmp/ ;setuid = root ;setgid = other ; PID is created inside chroot jail pid = /var/adm/stunnel_server_level1.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = rle ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ;options = Options_SSL ; Authentication stuff verify = 3 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail CApath = /opt/freeware/etc/stunnel/CA_files/ ; It's often easier to use CAfile ;CAfile = /opt/freeware/etc/stunnel/ca.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /usr/local/stunnel/etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = no ; Service-level configuration [pesitip] accept = 10443 connect = XXXXXXX:10016 Thanks for your help. Regards. Laurent UK Internet josealf(a)rocketmail.com 03/05/2011 14:52 Veuillez répondre à josealf(a)rocketmail.com Pour Laurent UK, stunnel-users-bounces(a)stunnel.org, stunnel-users(a)stunnel.org cc Objet Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Do not print this message unless it is necessary, consider the environment. --------------------------------------------- Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie. N'imprimez ce message que si necessaire, pensez a l'environnement. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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stunnel 4.36 released
by Michal Trojnara 03 May '11

03 May '11

Dear Users, Version 4.36 of stunnel was released. The ChangeLog entry: Version 4.36, 2011.05.03, urgency: LOW: * New features - Updated Win32 DLLs for OpenSSL 1.0.0d. - Dynamic memory management for strings manipulation: no more static STRLEN limit, lower stack footprint. - Strict public key comparison added for "verify = 3" certificate checking mode (thx to Philipp Hartwig). - Backlog parameter of listen(2) changed from 5 to SOMAXCONN: improved behavior on heavy load. - Example tools/stunnel.service file added for systemd service manager. * Bugfixes - Missing pthread_attr_destroy() added to fix memory leak (thx to Paul Allex and Peter Pentchev). - Fixed the incorrect way of setting FD_CLOEXEC flag. - Fixed --enable-libwrap option of ./configure script. - /opt/local added to OpenSSL search path for MacPorts compatibility. - Workaround implemented for signal handling on MacOS X. - A trivial bug fixed in the stunnel.init script. - Retry implemented on EAI_AGAIN error returned by resolver calls. Home page: http://www.stunnel.org/ Download: ftp://ftp.stunnel.org/stunnel/ SHA-256 hash for stunnel-4.36.tar.gz: 3483fc2011e8a9d2614a93a9dbf7eabf405044df3566f29144fe2d1dd37a35f5 Best regards, Mike

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Re: [stunnel-users] need help error :SSL3_GET_RECORD:wrong versionnumber with cipher DES-CBC-SHA
by josealf＠rocketmail.com 03 May '11

03 May '11

Laurent, Can you post your configuration? For security, You should change the real IPs (but not the ports) before posting. You can check: 1. Does your stunnel client config has client=yes? 2. Does your stunnel server config has client=no 3. Check your packet flow, that is: your accept/connect settings. Regards Jose -----Original Message----- From: laurent.uk(a)bnpparibas.com Sender: stunnel-users-bounces(a)stunnel.org Date: Tue, 3 May 2011 14:16:09 To: <stunnel-users(a)stunnel.org> Subject: [stunnel-users] need help error :SSL3_GET_RECORD:wrong version number with cipher DES-CBC-SHA _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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Re: [stunnel-users] Temporary failure in name resolution (Michal Trojnara)
by Phil Wieland 29 Apr '11

29 Apr '11

I attach two strace reports, strace-good shows a successful use, strace-bad shows it failing after a reboot. In both cases I just telnet to localhost 55899, which gives the smtp server's banner in the good case. ltrace craps out with a [pid 1107] +++ killed by SIGTRAP +++ in both cases, and doesn't show anything useful. These are WITHOUT the suggested patch, I am not really equipped for building on this server. Phil

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Re: [stunnel-users] Réf. : Re: Tr : Réf. : Re: Need some informations about stunnel(AC,?crl ?files)
by Ludolf Holzheid 29 Apr '11

29 Apr '11

On Fri, 2011-04-29 15:39:45 +0200, laurent.uk(a)bnpparibas.com wrote: > Dear Ludolf thank you for your response. > > I have another question. > > Is it possible to have 2 stunnel running on the same server? > > 1 stunnel with no client's certificate verification (verify = 0) with a > specific port > > and 1 stunnel with client's certificate verification (verify = 3) with > other specific port You may run as many instances of stunnel as you like, as long as they don't share listening ports (accept=...) or pid files (pid=...). 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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Re: [stunnel-users] Tr : Réf. : Re: Need some informations about stunnel (AC,?crl?files)
by Ludolf Holzheid 28 Apr '11

28 Apr '11

On Thu, 2011-04-28 17:06:28 +0200, laurent.uk(a)bnpparibas.com wrote: > Dear Ludolf i need some help with the verify option. > > I want to check the certificate client in my machine and also check if the > certificate's client is in the crl list. > > You said that " > If you are using verify=3, stunnel checks client certificates against > the set of certificates in CApath or CAfile, not against CAs and CRLs." > > Is it possible to check client certificates with certificates in CaPath > and also with CRls? Laurent, By installing a certificate (to CApath or CAfile), you express your trust in the certificate. For the client certificates, you could either o implicitly trust all certificates signed by an installed CA certificate and not yet revoked (verify=2), or o explicitly trust installed client certificates (verify=3). In both cases, all installed certificates are fully trusted. Cross-checking a trusted (client-) certificate against an other trusted (CA-) certificate does not raise security or trustworthiness. In order to revoke a client certificate in verify=3 mode, just uninstall it. 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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Delay before sending server hello
by Dan Price 28 Apr '11

28 Apr '11

I am using stunnel to accept TLS connections. I'm opening eight connections at virtually the same time, and occasionally see that for one of the connections, the handshake does not complete - stunnel does not send the server hello, and the client usually resets the connection. I did manage to capture one instance where stunnel sends the server hello, but it is delayed by over a minute. I upgraded to version 4.35, and I see the same behavior. I set debug=debug, and captured what I think are the relevant logs (through write server hello). I kept the logs for the successful connection (59924) that came in after the failed one (59923). Apr 27 13:21:22 cm stunnel: LOG7[10357:1431918272]: local socket: FD=15 allocated (non-blocking mode) Apr 27 13:21:22 cm stunnel: LOG7[10357:1431918272]: Service msrp accepted FD=15 from ::ffff:10.50.2.11:59923 Apr 27 13:21:22 cm stunnel: LOG7[10357:1431918272]: local socket: FD=16 allocated (non-blocking mode) Apr 27 13:21:22 cm stunnel: LOG7[10357:1431918272]: Service msrp accepted FD=16 from ::ffff:10.50.2.11:59924 Apr 27 13:21:22 cm stunnel: LOG7[10357:1431989136]: Service msrp started Apr 27 13:21:22 cm stunnel: LOG7[10357:1431989136]: Waiting for a libwrap process Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Service msrp started Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Waiting for a libwrap process Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Acquired libwrap process #1 Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Releasing libwrap process #1 Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Released libwrap process #1 Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: Service msrp permitted by libwrap from ::ffff:10.50.2.11:59924 Apr 27 13:21:22 cm stunnel: LOG5[10357:1433471888]: Service msrp accepted connection from ::ffff:10.50.2.11:59924 Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: SSL state (accept): before/accept initialization Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: SSL state (accept): SSLv3 read client hello A Apr 27 13:21:22 cm stunnel: LOG7[10357:1433471888]: SSL state (accept): SSLv3 write server hello A Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: Acquired libwrap process #4 Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: Releasing libwrap process #4 Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: Released libwrap process #4 Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: Service msrp permitted by libwrap from ::ffff:10.50.2.11:59923 Apr 27 13:22:38 cm stunnel: LOG5[10357:1431989136]: Service msrp accepted connection from ::ffff:10.50.2.11:59923 Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: SSL state (accept): before/accept initialization Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: SSL state (accept): SSLv3 read client hello A Apr 27 13:22:38 cm stunnel: LOG7[10357:1431989136]: SSL state (accept): SSLv3 write server hello A Thanks, Dan

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Does stunnel support startTLS?
by Markus Borst 28 Apr '11

28 Apr '11

Stunnel supports encryption in the "old" ssl style extra port configuration (i.e. imaps on port 993) where the encryption is negotiated immediately upon start of the connection. Does stunnel also support the startTLS method? i.e. a clear text connection is established (imap on port 143) and one of the first imap commands is startTLS, which negotiates the encryption and protects the connection from that time onwards. I know that supporting startTLS is a lot harder, since it means sniffing commands in the higher level protocol, but we need it nevertheless. (In fact, our imap server does support startTLS, but it does _not_ support importing an external certificate, which is why I'm looking for an external solution.) From reading the documentation I'm not sure whether stunnel supports startTLS, there are a few option descriptions which might point to startTLS, but I'm not sure. Anybody knows the definite answer? Greetings Markus Borst -- TU Darmstadt Hochschulrechenzentrum (HRZ) Markus Borst Adresse: Petersenstrasse 30, 64287 Darmstadt, Germany Tel.: 06151/16-2056 Email: M.Borst(a)hrz.tu-darmstadt.de

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Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept initialization
by Jack Liu 28 Apr '11

28 Apr '11

Thx for continuing reply my msg, Yes, there is var/log/messages Inside there only has some iptables log, FTP, SMTP application log and nothing else. I am positive that this problem is not cause by iptables, becuase I tried with iptables off. Nothing else related to stunnel is found in that folder. Any other suggestions? Mr. Jack > From: sunyucong(a)gmail.com > Date: Mon, 25 Apr 2011 20:00:30 -0700 > Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept initialization > To: jackliu92(a)hotmail.com > CC: stunnel-users(a)stunnel.org > > I guess in centos that's /var/log/messages > but in general, you should probably check everything in /var/log to make sure. > > On Mon, Apr 25, 2011 at 5:38 PM, Jack Liu <jackliu92(a)hotmail.com> wrote: > > Thank you for helping, but both logs r not presented in my var/log/ dir. Any > > other suggestions? > > > > > > Mr. Jack > > > > > > > > > > > >> From: sunyucong(a)gmail.com > >> Date: Mon, 25 Apr 2011 16:25:20 -0700 > >> Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): > >> before/accept initialization > >> To: jackliu92(a)hotmail.com > >> CC: stunnel-users(a)stunnel.org > >> > >> Are you sure that's entire log? check /var/log/daemons.log and > >> syslog.log as well. > >> > >> On Sun, Apr 24, 2011 at 1:30 AM, Jack Liu <jackliu92(a)hotmail.com> wrote: > >> > It anyone knows how to fix Stunnel stuck at SSL state (accept): > >> > before/accept initialization??? > >> > > >> > Here is the log: > >> > > >> > ----------------------------------------------------------------------------------------------------------- > >> > [root@vps1 ~]#stunnel /etc/stunnel/stunnel.conf > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Snagged 64 random bytes from > >> > /root/.rnd > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Wrote 1024 new random bytes > >> > to > >> > /root/.rnd > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: RAND_status claims > >> > sufficient > >> > entropy for the PRNG > >> > 2011.04.24 02:25:13 LOG6[32174:3085993680]: PRNG seeded successfully > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Certificate: > >> > /etc/stunnel/stunnel.pem > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Key file: > >> > /etc/stunnel/stunnel.pem > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Verify directory set to > >> > /etc/stunnel/CA > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: CRL directory set to > >> > /etc/stunnel/CRL > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: SSL context initialized for > >> > service 3proxy > >> > 2011.04.24 02:25:13 LOG5[32174:3085993680]: stunnel 4.15 on > >> > i686-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 > >> > 2011.04.24 02:25:13 LOG5[32174:3085993680]: Threading:PTHREAD SSL:ENGINE > >> > Sockets:POLL,IPv6 Auth:LIBWRAP > >> > 2011.04.24 02:25:13 LOG6[32174:3085993680]: file ulimit = 1024 (can be > >> > changed with 'ulimit -n') > >> > 2011.04.24 02:25:13 LOG6[32174:3085993680]: poll() used - no FD_SETSIZE > >> > limit for file descriptors > >> > 2011.04.24 02:25:13 LOG5[32174:3085993680]: 500 clients allowed > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 3 in non-blocking mode > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 4 in non-blocking mode > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 5 in non-blocking mode > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: SO_REUSEADDR option set on > >> > accept socket > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: 3proxy bound to > >> > 0.0.0.0:30001 > >> > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Created pid file > >> > /var/run/stunnel.pid > >> > 2011.04.24 02:25:20 LOG7[32174:3085993680]: 3proxy accepted FD=6 from > >> > xx.xxx.xxx.xx:41165 > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: 3proxy started > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 6 in non-blocking mode > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 7 in non-blocking mode > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 8 in non-blocking mode > >> > 2011.04.24 02:25:20 LOG7[32174:3085993680]: Cleaning up the signal pipe > >> > 2011.04.24 02:25:20 LOG6[32174:3085993680]: Child process 32176 finished > >> > with code 0 > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: Connection from > >> > xx.xxx.xxx.xx:41165 permitted by libwrap > >> > 2011.04.24 02:25:20 LOG5[32174:3085990800]: 3proxy connected from > >> > xx.xxx.xxx.xx:41165 > >> > 2011.04.24 02:25:20 LOG7[32174:3085990800]: SSL state (accept): > >> > before/accept initialization <-----------------------Stuck here > >> > forever!!! > >> > 2011.04.24 02:25:22 LOG3[32174:3085990800]: SSL_accept: Peer suddenly > >> > disconnected > >> > 2011.04.24 02:25:22 LOG5[32174:3085990800]: Connection reset: 0 bytes > >> > sent > >> > to SSL, 0 bytes sent to socket > >> > 2011.04.24 02:25:22 LOG7[32174:3085990800]: 3proxy finished (0 left) > >> > 2011.04.24 02:25:25 LOG3[32174:3085993680]: Received signal 2; > >> > terminating > >> > 2011.04.24 02:25:25 LOG7[32174:3085993680]: removing pid file > >> > /var/run/stunnel.pid > >> > [root@vps1 ~]# > >> > > >> > ----------------------------------------------------------------------------------------------------------- > >> > stunnel.conf: > >> > cert = /etc/stunnel/stunnel.pem > >> > key = /etc/stunnel/stunnel.pem > >> > CApath = /etc/stunnel/CA > >> > CRLpath = /etc/stunnel/CRL > >> > debug = 7 > >> > foreground = yes > >> > verify = 1 > >> > # > >> > [3proxy] > >> > accept = 30001 > >> > connect = 127.0.0.1:33135 > >> > > >> > ----------------------------------------------------------------------------------------------------------- > >> > > >> > I am hosting with CentOS 5.5, and installed Stunnel via yum. > >> > Planning to use it with 3Proxy. However I experience the problem above, > >> > can > >> > someone please help with that? > >> > Thank you very much! > >> > > >> > > >> > > >> > Mr. Jack > >> > > >> > _______________________________________________ > >> > stunnel-users mailing list > >> > stunnel-users(a)stunnel.org > >> > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > >> > > >> > > >

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Patch to enhance verify=3 with SHA-1 check
by Philipp Hartwig 27 Apr '11

27 Apr '11

As indicated in a previous mail to this list I was surprised by the following behavior: With "verify=3" stunnel doesn't compare the peer's certificate with the locally installed certificate for actual equality but it only checks whether they have the same subject. The recent Comodo incident[1] has shown that it is not impossible to get a certificate which matches the subject of the certificate of some interesting server and is signed by a trusted CA. That's why I was interested in a stricter form of verification (at least in client mode). I have attached a small patch, derived from code in the file "mutt_ssl.c" of the Mutt[2] mail client, which adds a check for equality of SHA-1 hashes to the "verify=3" certificate check. I mainly wrote it for personal use but maybe someone else will find it useful or has some comments. Regards, Philipp [1] http://blog.mozilla.com/security/2011/03/25/comodo-certificate-issue-follow… [2] http://www.mutt.org/

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Re: [stunnel-users] Réf. : Re: Need some informations about stunnel (AC,?crl?files)
by Ludolf Holzheid 27 Apr '11

27 Apr '11

On Wed, 2011-04-27 13:06:43 +0200, laurent.uk(a)bnpparibas.com wrote: > Dear ludolf thanks you for your response. > > So if i use verify = 3, the crl files is useless. > > I went to the url http://crl.verisign.com , and there were a lot of files. > > what are the files corresponding of the crl list please? Those with the ".crl" extension, I suppose ;-) You'll need to look for the CRLs matching the certificates you want to use. Note, there may be CRLs for intermediate certificates too. At least (the randomly selected) Class3SoftwarePublishers.crl seems to be in DES format, you might have to convert it to PEM for use with stunnel. 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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Re: [stunnel-users] Need some informations about stunnel (AC, crl files)
by Ludolf Holzheid 27 Apr '11

27 Apr '11

On Wed, 2011-04-27 10:47:42 +0200, laurent.uk(a)bnpparibas.com wrote: > Hi all, > > I need some informations about stunnel. > > First, when the client's software use a certificate signed by a CA like > veriSign. Did we need to add the certificates of this CA? or it is not > neccessary because it is a knowned CA. If you are using verify=3, stunnel checks client certificates against the set of certificates in CApath or CAfile, not against CAs and CRLs. In order to have stunnel check the certificate chain of client certificates, you'll have to use verify=2. For that, stunnel needs access to the CA's root certificate and the intermediate certificates (i.e. they have to be locally installed to CApath/CAfile). > Secondally, i need to download and update the crl files, and also (if it's > possible) the certificates of knowed CA. How can i do that in my AIX's > machine please? This depends on the way the CA publishes its certificates and CRLs. For VeriSign, my first idea is to use wget to download them from http://crl.verisign.com. There may be better ways, though. And I don't know AIX. 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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Re: [stunnel-users] need help for the error VERIFY ERROR ONLY MY: no cert fo (verify = 3)
by Ludolf Holzheid 26 Apr '11

26 Apr '11

On Tue, 2011-04-26 17:00:06 +0200, laurent.uk(a)bnpparibas.com wrote: > Hi, > > I tried to configure my STUNNEL server, with my client's software test but > i always have the the following error : > > 2011.04.26 14:23:09 LOG4[1683500:258]: VERIFY ERROR ONLY MY: no cert for > /C=ww/O=swift/OU=personalid/OU=bnpafrpp/CN=crl-3skey-ebics-ts > > [..] > > I tried to extract the public certificate from the crl-3skey-ebics-ts and > add it in the keystore and in the folder /usr/local/ssl/certs/trusted/ > > [..] > > verify = 3 > ; Don't forget to c_rehash CApath > ; CApath is located inside chroot jail > ;CApath = /opt/freeware/etc/stunnel/ > ; It's often easier to use CAfile > CAfile = /opt/freeware/etc/stunnel/ca.pem > ; Don't forget to c_rehash CRLpath Laurent, If you specify a CAfile in 'verify=3' mode, you need to add the client's certificates to this file. You could also store the client's certificates in PEM format files (one file per certificate) in a directory stunnel can reach at connection time. You have to specify the name of this directory as CApath then (in contrast to CAfile), and you'll have to run c_rehash on this directory. 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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Temporary failure in name resolution
by Phil Wieland 26 Apr '11

26 Apr '11

I think I've done something stupid but I can't work out what. I'm running stunnel4 version 4.29 on an Ubuntu server box, using it to tunnel smtp connections to my ISP's mail server. Everything works perfectly until I reboot the server, when it stops working. In syslog, I get: Apr 24 15:56:11 friedbread stunnel: LOG5[1101:3074997104]: ssmtp accepted connection from 127.0.0.1:50681 Apr 24 15:56:11 friedbread stunnel: LOG3[1101:3074997104]: Error resolving 'smtp.blueyonder.co.uk': Temporary failure in name resolution (EAI_AGAIN) Apr 24 15:56:11 friedbread stunnel: LOG3[1101:3074997104]: No host resolved Apr 24 15:56:11 friedbread stunnel: LOG5[1101:3074997104]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket every time I attempt to send mail. I can ping smtp.blueyonder.co.uk no problem. The problem persists until I restart stunnel4, after which it works perfectly for weeks on end. Looking at syslog for boot time, it looks like stunnel tries to resolve smtp.blueyonder.co.uk as soon as it starts, but dhcp hasn't finished at this time so it fails. It seems to cache something from the failure and not try again? Even though the error is "Temporary". All advice gratefully received. Phil Wieland Liverpool, UK. ###@friedbread:~$ stunnel4 -version stunnel 4.29 on i486-pc-linux-gnu with OpenSSL 0.9.8k 25 Mar 2009 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 = AES:ALL:!aNULL:!eNULL:+RC4:@STRENGTH key = /etc/stunnel/stunnel.pem session = 300 seconds stack = 65536 bytes sslVersion = SSLv3 for client, all for server TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds verify = none ###@friedbread:~$ cat /etc/stunnel/stunnel.conf ; Sample stunnel configuration file by Michal Trojnara 2002-2009 ; Some options used here may not be adequate for your particular configuration ; Please make sure you understand them (especially the effect of the chroot jail) ; Certificate/key is needed in server mode and optional in client mode cert = /etc/ssl/certs/stunnel.pem ;key = /etc/ssl/certs/stunnel.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = SSLv3 ; Some security enhancements for UNIX systems - comment them out on Win32 chroot = /var/lib/stunnel4/ setuid = stunnel4 setgid = stunnel4 ; PID is created inside the chroot jail pid = /stunnel4.pid ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ;compression = zlib ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS ; Authentication stuff ;verify = 2 ; Don't forget to c_rehash CApath ; CApath is located inside chroot jail ;CApath = /certs ; It's often easier to use CAfile ;CAfile = /etc/stunnel/certs.pem ; Don't forget to c_rehash CRLpath ; CRLpath is located inside chroot jail ;CRLpath = /crls ; Alternatively you can use CRLfile ;CRLfile = /etc/stunnel/crls.pem ; Some debugging stuff useful for troubleshooting ;debug = 7 ;output = /var/log/stunnel4/stunnel.log ; Use it for client mode client = yes ; Service-level configuration ;[pop3s] ;accept = 995 ;connect = 110 ;[imaps] ;accept = 993 ;connect = 143 [ssmtp] accept = 55899 connect = smtp.blueyonder.co.uk:465 ;[https] ;accept = 443 ;connect = 80 ;TIMEOUTclose = 0 ; vim:ft=dosini ###@friedbread:~$

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Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept initialization
by Jack Liu 26 Apr '11

26 Apr '11

Thank you for helping, but both logs r not presented in my var/log/ dir. Any other suggestions? Mr. Jack > From: sunyucong(a)gmail.com > Date: Mon, 25 Apr 2011 16:25:20 -0700 > Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept initialization > To: jackliu92(a)hotmail.com > CC: stunnel-users(a)stunnel.org > > Are you sure that's entire log? check /var/log/daemons.log and > syslog.log as well. > > On Sun, Apr 24, 2011 at 1:30 AM, Jack Liu <jackliu92(a)hotmail.com> wrote: > > It anyone knows how to fix Stunnel stuck at SSL state (accept): > > before/accept initialization??? > > > > Here is the log: > > ----------------------------------------------------------------------------------------------------------- > > [root@vps1 ~]#stunnel /etc/stunnel/stunnel.conf > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Snagged 64 random bytes from > > /root/.rnd > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Wrote 1024 new random bytes to > > /root/.rnd > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: RAND_status claims sufficient > > entropy for the PRNG > > 2011.04.24 02:25:13 LOG6[32174:3085993680]: PRNG seeded successfully > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Certificate: > > /etc/stunnel/stunnel.pem > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Key file: > > /etc/stunnel/stunnel.pem > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Verify directory set to > > /etc/stunnel/CA > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: CRL directory set to > > /etc/stunnel/CRL > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: SSL context initialized for > > service 3proxy > > 2011.04.24 02:25:13 LOG5[32174:3085993680]: stunnel 4.15 on > > i686-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 > > 2011.04.24 02:25:13 LOG5[32174:3085993680]: Threading:PTHREAD SSL:ENGINE > > Sockets:POLL,IPv6 Auth:LIBWRAP > > 2011.04.24 02:25:13 LOG6[32174:3085993680]: file ulimit = 1024 (can be > > changed with 'ulimit -n') > > 2011.04.24 02:25:13 LOG6[32174:3085993680]: poll() used - no FD_SETSIZE > > limit for file descriptors > > 2011.04.24 02:25:13 LOG5[32174:3085993680]: 500 clients allowed > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 3 in non-blocking mode > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 4 in non-blocking mode > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 5 in non-blocking mode > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: SO_REUSEADDR option set on > > accept socket > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: 3proxy bound to 0.0.0.0:30001 > > 2011.04.24 02:25:13 LOG7[32174:3085993680]: Created pid file > > /var/run/stunnel.pid > > 2011.04.24 02:25:20 LOG7[32174:3085993680]: 3proxy accepted FD=6 from > > xx.xxx.xxx.xx:41165 > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: 3proxy started > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 6 in non-blocking mode > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 7 in non-blocking mode > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 8 in non-blocking mode > > 2011.04.24 02:25:20 LOG7[32174:3085993680]: Cleaning up the signal pipe > > 2011.04.24 02:25:20 LOG6[32174:3085993680]: Child process 32176 finished > > with code 0 > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: Connection from > > xx.xxx.xxx.xx:41165 permitted by libwrap > > 2011.04.24 02:25:20 LOG5[32174:3085990800]: 3proxy connected from > > xx.xxx.xxx.xx:41165 > > 2011.04.24 02:25:20 LOG7[32174:3085990800]: SSL state (accept): > > before/accept initialization <-----------------------Stuck here > > forever!!! > > 2011.04.24 02:25:22 LOG3[32174:3085990800]: SSL_accept: Peer suddenly > > disconnected > > 2011.04.24 02:25:22 LOG5[32174:3085990800]: Connection reset: 0 bytes sent > > to SSL, 0 bytes sent to socket > > 2011.04.24 02:25:22 LOG7[32174:3085990800]: 3proxy finished (0 left) > > 2011.04.24 02:25:25 LOG3[32174:3085993680]: Received signal 2; terminating > > 2011.04.24 02:25:25 LOG7[32174:3085993680]: removing pid file > > /var/run/stunnel.pid > > [root@vps1 ~]# > > ----------------------------------------------------------------------------------------------------------- > > stunnel.conf: > > cert = /etc/stunnel/stunnel.pem > > key = /etc/stunnel/stunnel.pem > > CApath = /etc/stunnel/CA > > CRLpath = /etc/stunnel/CRL > > debug = 7 > > foreground = yes > > verify = 1 > > # > > [3proxy] > > accept = 30001 > > connect = 127.0.0.1:33135 > > ----------------------------------------------------------------------------------------------------------- > > > > I am hosting with CentOS 5.5, and installed Stunnel via yum. > > Planning to use it with 3Proxy. However I experience the problem above, can > > someone please help with that? > > Thank you very much! > > > > > > > > Mr. Jack > > > > _______________________________________________ > > stunnel-users mailing list > > stunnel-users(a)stunnel.org > > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > > > >

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Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization
by Jack Liu 25 Apr '11

25 Apr '11

I installed the 4.35 one into my CentOS, it seems like the same problem still exist. Is there anything I can do to fix it? Mr. Jack Date: Sun, 24 Apr 2011 19:09:35 -0700 From: josealf(a)rocketmail.com Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization To: jackliu92(a)hotmail.com Hi Mr Jack, RPMS attached. Let me know if you need further help. Regards, Jose From: Jack Liu <jackliu92(a)hotmail.com> To: josealf(a)rocketmail.com; stunnel-users(a)stunnel.org Sent: Sun, April 24, 2011 1:08:44 PM Subject: RE: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization Yes sure, please provide the binary. Thank you very much! One additional information, running socket5 on 3Proxy. Mr. Jack > Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization > To: jackliu92(a)hotmail.com; stunnel-users(a)stunnel.org > From: josealf(a)rocketmail.com > Date: Sun, 24 Apr 2011 11:49:05 +0000 > > If you ruled out a configuration error, You should try with a more recent version of stunnel. You can recompile the SRPM (4.29) from redhat 6 (or scientific linux 6) and it works fine under CentOS 5. I can provide binaries if needed. > > -----Original Message----- > From: Jack Liu <jackliu92(a)hotmail.com> > Sender: stunnel-users-bounces(a)stunnel.org > Date: Sun, 24 Apr 2011 02:30:24 > To: <stunnel-users(a)stunnel.org> > Subject: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept > initialization > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > > >

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Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization
by Jack Liu 25 Apr '11

25 Apr '11

Thank you! Mr. Jack Date: Sun, 24 Apr 2011 19:09:35 -0700 From: josealf(a)rocketmail.com Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization To: jackliu92(a)hotmail.com Hi Mr Jack, RPMS attached. Let me know if you need further help. Regards, Jose From: Jack Liu <jackliu92(a)hotmail.com> To: josealf(a)rocketmail.com; stunnel-users(a)stunnel.org Sent: Sun, April 24, 2011 1:08:44 PM Subject: RE: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization Yes sure, please provide the binary. Thank you very much! One additional information, running socket5 on 3Proxy. Mr. Jack > Subject: Re: [stunnel-users] Stunnel stuck at SSL state (accept): before/acceptinitialization > To: jackliu92(a)hotmail.com; stunnel-users(a)stunnel.org > From: josealf(a)rocketmail.com > Date: Sun, 24 Apr 2011 11:49:05 +0000 > > If you ruled out a configuration error, You should try with a more recent version of stunnel. You can recompile the SRPM (4.29) from redhat 6 (or scientific linux 6) and it works fine under CentOS 5. I can provide binaries if needed. > > -----Original Message----- > From: Jack Liu <jackliu92(a)hotmail.com> > Sender: stunnel-users-bounces(a)stunnel.org > Date: Sun, 24 Apr 2011 02:30:24 > To: <stunnel-users(a)stunnel.org> > Subject: [stunnel-users] Stunnel stuck at SSL state (accept): before/accept > initialization > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > > >

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Stunnel stuck at SSL state (accept): before/accept initialization
by Jack Liu 25 Apr '11

25 Apr '11

It anyone knows how to fix Stunnel stuck at SSL state (accept): before/accept initialization??? Here is the log: ----------------------------------------------------------------------------------------------------------- [root@vps1 ~]#stunnel /etc/stunnel/stunnel.conf 2011.04.24 02:25:13 LOG7[32174:3085993680]: Snagged 64 random bytes from /root/.rnd 2011.04.24 02:25:13 LOG7[32174:3085993680]: Wrote 1024 new random bytes to /root/.rnd 2011.04.24 02:25:13 LOG7[32174:3085993680]: RAND_status claims sufficient entropy for the PRNG 2011.04.24 02:25:13 LOG6[32174:3085993680]: PRNG seeded successfully 2011.04.24 02:25:13 LOG7[32174:3085993680]: Certificate: /etc/stunnel/stunnel.pem 2011.04.24 02:25:13 LOG7[32174:3085993680]: Key file: /etc/stunnel/stunnel.pem 2011.04.24 02:25:13 LOG7[32174:3085993680]: Verify directory set to /etc/stunnel/CA 2011.04.24 02:25:13 LOG7[32174:3085993680]: CRL directory set to /etc/stunnel/CRL 2011.04.24 02:25:13 LOG7[32174:3085993680]: SSL context initialized for service 3proxy 2011.04.24 02:25:13 LOG5[32174:3085993680]: stunnel 4.15 on i686-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 2011.04.24 02:25:13 LOG5[32174:3085993680]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2011.04.24 02:25:13 LOG6[32174:3085993680]: file ulimit = 1024 (can be changed with 'ulimit -n') 2011.04.24 02:25:13 LOG6[32174:3085993680]: poll() used - no FD_SETSIZE limit for file descriptors 2011.04.24 02:25:13 LOG5[32174:3085993680]: 500 clients allowed 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 3 in non-blocking mode 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 4 in non-blocking mode 2011.04.24 02:25:13 LOG7[32174:3085993680]: FD 5 in non-blocking mode 2011.04.24 02:25:13 LOG7[32174:3085993680]: SO_REUSEADDR option set on accept socket 2011.04.24 02:25:13 LOG7[32174:3085993680]: 3proxy bound to 0.0.0.0:30001 2011.04.24 02:25:13 LOG7[32174:3085993680]: Created pid file /var/run/stunnel.pid 2011.04.24 02:25:20 LOG7[32174:3085993680]: 3proxy accepted FD=6 from xx.xxx.xxx.xx:41165 2011.04.24 02:25:20 LOG7[32174:3085990800]: 3proxy started 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 6 in non-blocking mode 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 7 in non-blocking mode 2011.04.24 02:25:20 LOG7[32174:3085990800]: FD 8 in non-blocking mode 2011.04.24 02:25:20 LOG7[32174:3085993680]: Cleaning up the signal pipe 2011.04.24 02:25:20 LOG6[32174:3085993680]: Child process 32176 finished with code 0 2011.04.24 02:25:20 LOG7[32174:3085990800]: Connection from xx.xxx.xxx.xx:41165 permitted by libwrap 2011.04.24 02:25:20 LOG5[32174:3085990800]: 3proxy connected from xx.xxx.xxx.xx:41165 2011.04.24 02:25:20 LOG7[32174:3085990800]: SSL state (accept): before/accept initialization <-----------------------Stuck here forever!!! 2011.04.24 02:25:22 LOG3[32174:3085990800]: SSL_accept: Peer suddenly disconnected 2011.04.24 02:25:22 LOG5[32174:3085990800]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.04.24 02:25:22 LOG7[32174:3085990800]: 3proxy finished (0 left) 2011.04.24 02:25:25 LOG3[32174:3085993680]: Received signal 2; terminating 2011.04.24 02:25:25 LOG7[32174:3085993680]: removing pid file /var/run/stunnel.pid [root@vps1 ~]# ----------------------------------------------------------------------------------------------------------- stunnel.conf: cert = /etc/stunnel/stunnel.pem key = /etc/stunnel/stunnel.pem CApath = /etc/stunnel/CA CRLpath = /etc/stunnel/CRL debug = 7 foreground = yes verify = 1 # [3proxy] accept = 30001 connect = 127.0.0.1:33135 ----------------------------------------------------------------------------------------------------------- I am hosting with CentOS 5.5, and installed Stunnel via yum. Planning to use it with 3Proxy. However I experience the problem above, can someone please help with that? Thank you very much! Mr. Jack

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Stunnel 4.33 released
by Michal Trojnara 22 Apr '11

22 Apr '11

The ChangeLog entry: Version 4.33, 2010.04.05, urgency: MEDIUM: * New features - Win32 DLLs for OpenSSL 1.0.0. This library requires to c_rehash CApath/CRLpath directories on upgrade. - Win32 DLLs for zlib 1.2.4. - Experimental support for local mode on WIN32 platform. Try "exec = c:\windows\system32\cmd.exe". * Bugfixes - Inetd mode fixed SHA-1 value for stunnel-4.33.tar.gz: 695c7ef834952cb8ddbc790e10b6e32798fc2767 Home page: http://stunnel.mirt.net/ Download: ftp://stunnel.mirt.net/stunnel/ Best regards, Michal Trojnara

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Possible leak in client.c:init_ssl()
by Sven Ulland 16 Apr '11

16 Apr '11

Quick summary: Stunnel 4.35 configured with four services. As clients connect, the main stunnel process grows a lot in vsz/rss memory. With a lot of clients connecting, it quickly grows to several gigabytes rss. The use case is quite special: The multithreaded download accelerator 'axel' is used to download large files using 800 simultaneous threads. The downloads are from China, so the network performance is horrible, and connections are reset/broken all the time, so there is lots of new connections created constantly. Up to four axel instances run at the same time, so we're talking 3200 simultaneous connections. Over a short 2h timespan, nearly 30000 connections have been set up (ref attached stunnel.log). The memory use increases over time, often in very large steps. As connections finish and the transfers stop (i.e. no active connections at all), the memory is not released. A similar issue was reported in 2008 [1]. Attached are the following files: stunnel.conf: Four services, no special config. Debug level 5. massif.out.excerpt.txt: Valgrind Massif output. The Massif log indicates that most of the memory is allocated through client.c:init_ssl(), by libssl and zlib. I haven't looked too much at the code yet, but could this be related to the high rate of connection resets/timeouts, combined with connection/session reuse? sven [1]: possible stunnel memory leak Message-ID: <47E8E0AD.8010709(a)eu.citrix.com> http://www.stunnel.org/pipermail/stunnel-users/2008-March/001903.html

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Re: [stunnel-users] Weird error when trying to use 512bit RSA key
by Leandro Avila 12 Apr '11

12 Apr '11

The problem seems to be the key size If you use a 512 key for stunnel it works However, when the key used by stunnel is 1024 and you try to use the EXP-RC4-MD5 cipher, a temporary 512 key is generated BUT that fails. So I tested: Stunnel 4.35 and OpenSSL 1.0.0d Using a 512 RSA key and EXP-RC4-MD5 works Using a 1025 RSA key and EXP-RC4-MD5 fails Looks more like an OpenSSL thing. I'm uncertain about how this situation is handled in the protocol spec. When the server has a 1024 key but the client wants to negotiate with a smaller key. Cheers ----------------- Leandro Avila ----- Original Message ----- From:Outofwall.com <root(a)outofwall.com> To:[email protected]; stunnel-users(a)stunnel.org Cc: Sent:Monday, April 11, 2011 10:39 PM Subject:Re: [stunnel-users] Weird error when trying to use 512bit RSA key In fact, I'm using TLSv1, just use the custom ciphers list. Here's what I have on the server side: ciphers EXP-RC4-MD5:ALL and test sunyc@www:~$ openssl s_client -tls1 -connect ssl.sgivpn.info:443 -cipher EXP-RC4-MD5 CONNECTED(00000003) depth=0 /C=US/ST=CA/O=XXX verify error:num=18:self signed certificate verify return:1 depth=0 /C=US/ST=CA/O=XXX verify return:1 32684:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1093:SSL alert number 40 32684:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: Error: Apr 11 18:57:35 localhost stunnel: LOG3[8319:139884220368640]: SSL_accept: 1409B11A: error:1409B11A:SSL routines:SSL3_SEND_SERVER_KEY_EXCHANGE:error generating tmp rsa key Both client and server is running ubuntu 10.04, with openssl 0.9.8k I think. Cheers. _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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Re: [stunnel-users] Weird error when trying to use 512bit RSA key
by Outofwall.com 12 Apr '11

12 Apr '11

In fact, I'm using TLSv1, just use the custom ciphers list. Here's what I have on the server side: ciphers EXP-RC4-MD5:ALL and test sunyc@www:~$ openssl s_client -tls1 -connect ssl.sgivpn.info:443 -cipher EXP-RC4-MD5 CONNECTED(00000003) depth=0 /C=US/ST=CA/O=XXX verify error:num=18:self signed certificate verify return:1 depth=0 /C=US/ST=CA/O=XXX verify return:1 32684:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1093:SSL alert number 40 32684:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: Error: Apr 11 18:57:35 localhost stunnel: LOG3[8319:139884220368640]: SSL_accept: 1409B11A: error:1409B11A:SSL routines:SSL3_SEND_SERVER_KEY_EXCHANGE:error generating tmp rsa key Both client and server is running ubuntu 10.04, with openssl 0.9.8k I think. Cheers.

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The verify=3 option in client mode
by Philipp Hartwig 09 Apr '11

09 Apr '11

Hello, I'm using stunnel in client mode to provide an SSL connection for offlineimap[1] which does not support verification of SSL certificates. As I've read stunnel does not compare the name of the server offering the certificate to the server name mentioned in the certificate (in the CN field for example). So if I used the following section in my stunnel.conf client=yes [imaps] accept = 127.0.0.1:4322 connect = imap.gmail.com:993 CAfile = /usr/share/ca-certificates/mozilla/Equifax_Secure_CA.crt verify = 2 stunnel would happily accept any certificate signed by Equifax for an arbitrary website. Is this correct? So I've switched to using the verify=3 option and I just want to make sure I configured it correctly. I'm now using the following section client=yes [imaps] accept = 127.0.0.1:4322 connect = imap.gmail.com:993 CAfile= /home/ph/.certs/imaps.pem verify = 3 imaps.pem is a file containing two certificates, namely the first and the last certificate in the certificate chain of imap.gmail.com, that is the Equifax CA certificate and the server certificate itself. I then use offlineimap to establish an unencrypted connection to 127.0.0.1:4322. My understanding is that stunnel will now exclusively accept the server certificate stored in the imaps.pem file rendering all MITM attacks impossible. I'd be grateful if someone could confirm that this setup makes sense. Is this the way the verify=3 option is supposed to use? First I thought that it should be enough to just provide the server certificate in the imaps.pem file, but then openssl would complain about a self-signed certificate, so I included the CA certificate as well. Regards, Philipp [1] https://github.com/jgoerzen/offlineimap/wiki/

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Is local mode on WIN32 working?
by Joerg Behrend 09 Apr '11

09 Apr '11

The changelog of stunnel 4.33 states that "Experimental support for local mode on WIN32 platform" is working and that should be tried exec = c:\windows\system32\cmd.exe In practice, it is for me not working, a connection is accepted but always reset with the stunnel log message: readsocket: Connection reset by peer (WSAECONNRESET) (10054) It was tested using the 4.35 Windows installer. Are there other requirements or settings necessary? Is a recompilation with special options senseful? Thanks! Joerg

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issue making stunnel 4.35 use an apache http proxy to go out?
by Matt Wise 08 Apr '11

08 Apr '11

I've got an Apache proxy on port 3128 that will allow our clients to get outbound with a 'CONNECT" to a few services.. I'm trying to make stunnel use this service, and it seems to be ignoring my configuration completely. Tcpdumps show NO packets going outbound on port 3128... any ideas what i'm doing wrong? This config allows an inbound connection to port 1234 to hit port 2345 (a local service), while also handling the setup of an inbound connection to localhost:514 to a remote host on port 1514... debug = 7 pid = /var/run/stunnel.pid service = stunnel syslog = yes foreground = no socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 fips = no # Localhost:1234 hits localhost:2345 [cseservices] client = no accept = 1234 connect = 127.0.0.1:2345 CAfile = /etc/stunnel/ssl/tunnel-CAs.cert.pem cert = /etc/stunnel/ssl/server.pub key = /etc/stunnel/ssl/server.key verify = 2 ## Localhost:514 hits remotehost:1514 [syslog] client = yes accept = 514 connect = xxx:1514 CAfile = /var/lib/puppet/ssl/certs/ca.pem key = /var/lib/puppet/ssl/private_keys/xxx.pem cert = /var/lib/puppet/ssl/certs/xxx.pem session = 5 TIMEOUTidle = 600 TIMEOUTbusy = 600 TIMEOUTclose = 300 TIMEOUTconnect = 10 verify = 2 protocol=connect protocolHost=proxy:3128 protocolAuthentication=basic —Matt

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Re: [stunnel-users] stunnel through elb.. need packets sent semi-frequently
by Leandro Avila 08 Apr '11

08 Apr '11

Hi I'm not sure this will work, but have you checked the option TIMEOUTidle = <num_seconds> ? Sounds to me like the setting you might be looking for ----------------- Leandro Avila ----- Original Message ----- From:Matt Wise <mwise(a)netflix.com> To:"stunnel-users(a)stunnel.org" <stunnel-users(a)stunnel.org> Cc: Sent:Thursday, April 7, 2011 6:04 PM Subject:Re: [stunnel-users] stunnel through elb.. need packets sent semi-frequently I'm using stunnel to pass some data through an Amazon ELB. Unfortunately, there are times when the session times out due to packets not passing for 60 seconds (an amazon ELB timeout). I'm wondering whether theres some way I can configure stunnel itself to pass some whitespaces or something back and forth every few seconds to make sure the session stays open and live? (and yes, I'm posing the same question to the app developer who's ap we're passing through.. but I'm looking at both avenues.. ) _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

3 2

stunnel through elb.. need packets sent semi-frequently
by Matt Wise 08 Apr '11

08 Apr '11

I'm using stunnel to pass some data through an Amazon ELB. Unfortunately, there are times when the session times out due to packets not passing for 60 seconds (an amazon ELB timeout). I'm wondering whether theres some way I can configure stunnel itself to pass some whitespaces or something back and forth every few seconds to make sure the session stays open and live? (and yes, I'm posing the same question to the app developer who's ap we're passing through.. but I'm looking at both avenues.. )

2 2

Re: [stunnel-users] STunnel server handshake fails
by Leandro Avila 08 Apr '11

08 Apr '11

Hello, I think you probably want to use the sslVersion = TLSv1 setting in your configuration. Instead of the options for OpenSSL Hope that helps ----------------- Leandro Avila ________________________________ From: John C. Kadyk <jckadyk(a)pacbell.net> To: stunnel-users(a)stunnel.org Sent: Thursday, April 7, 2011 7:06 PM Subject: Re: [stunnel-users] STunnel server handshake fails STunnel server handshake fails I'm trying to set up STunnel so our non-SSL network scanner can email scans through our email server, which requires TLS. A desktop email client with the same server/port settings can send email OK. I think I have STunnel configured correctly, but there's a handshake failure when it tries to connect to the server. STunnel seems to be attempting an SSLv3 connection even though I turned that option off in the config file. I want to force it to use TLS but not sure how to do that. Any suggestions greatly appreciated. Here's the config file: cert = stunnel.pem ;key = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS options = NO_SSLv2 options = NO_SSLv3 ; Authentication stuff ;verify = 2 ; Don't forget to c_rehash CApath ;CApath = certs ; It's often easier to use CAfile ;CAfile = certs.pem ; Don't forget to c_rehash CRLpath ;CRLpath = crls ; Alternatively you can use CRLfile ;CRLfile = crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ;output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 1025 connect = mail022-1.exch022.serverdata.net:1025 <http://mail022-1.exch022.serverdata.net:1025> ;[https] ;accept = 443 ;connect = 80 ;TIMEOUTclose = 0 ; vim:ft=dosini and here's the log: 2011.04.07 16:41:04 LOG5[3744:516]: Reading configuration from file stunnel.conf 2011.04.07 16:41:04 LOG7[3744:516]: Snagged 64 random bytes from C:/.rnd 2011.04.07 16:41:04 LOG7[3744:516]: Wrote 1024 new random bytes to C:/.rnd 2011.04.07 16:41:04 LOG7[3744:516]: PRNG seeded successfully 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service pop3s 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service imaps 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service ssmtp 2011.04.07 16:41:04 LOG5[3744:516]: Configuration successful 2011.04.07 16:41:04 LOG5[3744:516]: No limit detected for the number of clients 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=136 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service pop3s bound to 0.0.0.0:995 <http://0.0.0.0:995> 2011.04.07 16:41:04 LOG7[3744:516]: Service pop3s opened FD=136 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=124 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service imaps bound to 0.0.0.0:993 <http://0.0.0.0:993> 2011.04.07 16:41:04 LOG7[3744:516]: Service imaps opened FD=124 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=148 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service ssmtp bound to 0.0.0.0:1025 <http://0.0.0.0:1025> 2011.04.07 16:41:04 LOG7[3744:516]: Service ssmtp opened FD=148 2011.04.07 16:41:04 LOG5[3744:516]: stunnel 4.35 on x86-pc-mingw32-gnu with OpenSSL 1.0.0c 2 Dec 2010 2011.04.07 16:41:04 LOG5[3744:516]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2011.04.07 16:41:17 LOG7[3744:2436]: local socket: FD=232 allocated (non-blocking mode) 2011.04.07 16:41:17 LOG7[3744:2436]: Service ssmtp accepted FD=232 from 10.10.17.57:49968 <http://10.10.17.57:49968> 2011.04.07 16:41:17 LOG7[3744:2436]: Creating a new thread 2011.04.07 16:41:17 LOG7[3744:2436]: New thread created 2011.04.07 16:41:17 LOG7[3744:4012]: Service ssmtp started 2011.04.07 16:41:17 LOG7[3744:4012]: Option TCP_NODELAY set on local socket 2011.04.07 16:41:17 LOG5[3744:4012]: Service ssmtp accepted connection from 10.10.17.57:49968 <http://10.10.17.57:49968> 2011.04.07 16:41:17 LOG7[3744:4012]: remote socket: FD=268 allocated (non-blocking mode) 2011.04.07 16:41:17 LOG6[3744:4012]: connect_blocking: connecting 64.78.22.98:1025 <http://64.78.22.98:1025> 2011.04.07 16:41:17 LOG5[3744:4012]: connect_blocking: connected 64.78.22.98:1025 <http://64.78.22.98:1025> 2011.04.07 16:41:17 LOG5[3744:4012]: Service ssmtp connected remote server from 10.10.17.249:4081 <http://10.10.17.249:4081> 2011.04.07 16:41:17 LOG7[3744:4012]: Remote FD=268 initialized 2011.04.07 16:41:17 LOG7[3744:4012]: Option TCP_NODELAY set on remote socket 2011.04.07 16:41:17 LOG7[3744:4012]: SSL state (connect): before/connect initialization 2011.04.07 16:41:17 LOG7[3744:4012]: SSL state (connect): SSLv3 write client hello A 2011.04.07 16:41:17 LOG7[3744:4012]: SSL alert (write): fatal: handshake failure 2011.04.07 16:41:17 LOG3[3744:4012]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2011.04.07 16:41:17 LOG5[3744:4012]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.04.07 16:41:17 LOG7[3744:4012]: Service ssmtp finished (0 left) Any suggestions greatly appreciated. Thanks! John _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org http://stunnel.mirt.net/mailman/listinfo/stunnel-users

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STunnel server handshake fails
by John C. Kadyk 08 Apr '11

08 Apr '11

I'm trying to set up STunnel so our non-SSL network scanner can email scans through our email server, which requires TLS. A desktop email client with the same server/port settings can send email OK. I think I have STunnel configured correctly, but there's a handshake failure when it tries to connect to the server. STunnel seems to be attempting an SSLv3 connection even though I turned that option off in the config file. I want to force it to use TLS but not sure how to do that. Any suggestions greatly appreciated. Here's the config file: cert = stunnel.pem ;key = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Workaround for Eudora bug ;options = DONT_INSERT_EMPTY_FRAGMENTS options = NO_SSLv2 options = NO_SSLv3 ; Authentication stuff ;verify = 2 ; Don't forget to c_rehash CApath ;CApath = certs ; It's often easier to use CAfile ;CAfile = certs.pem ; Don't forget to c_rehash CRLpath ;CRLpath = crls ; Alternatively you can use CRLfile ;CRLfile = crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ;output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 1025 connect = mail022-1.exch022.serverdata.net:1025 <http://mail022-1.exch022.serverdata.net:1025> ;[https] ;accept = 443 ;connect = 80 ;TIMEOUTclose = 0 ; vim:ft=dosini and here's the log: 2011.04.07 16:41:04 LOG5[3744:516]: Reading configuration from file stunnel.conf 2011.04.07 16:41:04 LOG7[3744:516]: Snagged 64 random bytes from C:/.rnd 2011.04.07 16:41:04 LOG7[3744:516]: Wrote 1024 new random bytes to C:/.rnd 2011.04.07 16:41:04 LOG7[3744:516]: PRNG seeded successfully 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service pop3s 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service imaps 2011.04.07 16:41:04 LOG7[3744:516]: Configuration SSL options: 0x03000000 2011.04.07 16:41:04 LOG7[3744:516]: SSL options set: 0x03000004 2011.04.07 16:41:04 LOG7[3744:516]: Certificate: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Certificate loaded 2011.04.07 16:41:04 LOG7[3744:516]: Key file: stunnel.pem 2011.04.07 16:41:04 LOG7[3744:516]: Private key loaded 2011.04.07 16:41:04 LOG7[3744:516]: SSL context initialized for service ssmtp 2011.04.07 16:41:04 LOG5[3744:516]: Configuration successful 2011.04.07 16:41:04 LOG5[3744:516]: No limit detected for the number of clients 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=136 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service pop3s bound to 0.0.0.0:995 <http://0.0.0.0:995> 2011.04.07 16:41:04 LOG7[3744:516]: Service pop3s opened FD=136 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=124 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service imaps bound to 0.0.0.0:993 <http://0.0.0.0:993> 2011.04.07 16:41:04 LOG7[3744:516]: Service imaps opened FD=124 2011.04.07 16:41:04 LOG7[3744:516]: accept socket: FD=148 allocated (non-blocking mode) 2011.04.07 16:41:04 LOG7[3744:516]: Option SO_REUSEADDR set on accept socket 2011.04.07 16:41:04 LOG7[3744:516]: Service ssmtp bound to 0.0.0.0:1025 <http://0.0.0.0:1025> 2011.04.07 16:41:04 LOG7[3744:516]: Service ssmtp opened FD=148 2011.04.07 16:41:04 LOG5[3744:516]: stunnel 4.35 on x86-pc-mingw32-gnu with OpenSSL 1.0.0c 2 Dec 2010 2011.04.07 16:41:04 LOG5[3744:516]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2011.04.07 16:41:17 LOG7[3744:2436]: local socket: FD=232 allocated (non-blocking mode) 2011.04.07 16:41:17 LOG7[3744:2436]: Service ssmtp accepted FD=232 from 10.10.17.57:49968 <http://10.10.17.57:49968> 2011.04.07 16:41:17 LOG7[3744:2436]: Creating a new thread 2011.04.07 16:41:17 LOG7[3744:2436]: New thread created 2011.04.07 16:41:17 LOG7[3744:4012]: Service ssmtp started 2011.04.07 16:41:17 LOG7[3744:4012]: Option TCP_NODELAY set on local socket 2011.04.07 16:41:17 LOG5[3744:4012]: Service ssmtp accepted connection from 10.10.17.57:49968 <http://10.10.17.57:49968> 2011.04.07 16:41:17 LOG7[3744:4012]: remote socket: FD=268 allocated (non-blocking mode) 2011.04.07 16:41:17 LOG6[3744:4012]: connect_blocking: connecting 64.78.22.98:1025 <http://64.78.22.98:1025> 2011.04.07 16:41:17 LOG5[3744:4012]: connect_blocking: connected 64.78.22.98:1025 <http://64.78.22.98:1025> 2011.04.07 16:41:17 LOG5[3744:4012]: Service ssmtp connected remote server from 10.10.17.249:4081 <http://10.10.17.249:4081> 2011.04.07 16:41:17 LOG7[3744:4012]: Remote FD=268 initialized 2011.04.07 16:41:17 LOG7[3744:4012]: Option TCP_NODELAY set on remote socket 2011.04.07 16:41:17 LOG7[3744:4012]: SSL state (connect): before/connect initialization 2011.04.07 16:41:17 LOG7[3744:4012]: SSL state (connect): SSLv3 write client hello A 2011.04.07 16:41:17 LOG7[3744:4012]: SSL alert (write): fatal: handshake failure 2011.04.07 16:41:17 LOG3[3744:4012]: SSL_connect: 1408F10B: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number 2011.04.07 16:41:17 LOG5[3744:4012]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2011.04.07 16:41:17 LOG7[3744:4012]: Service ssmtp finished (0 left) Any suggestions greatly appreciated. Thanks! John

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Can't get transparent mode to work from remote IP
by Ben Schmidt 02 Apr '11

02 Apr '11

Hello stunnel Mailinglist, I'm new to stunnel and so far it works just fine. What impressed me the most is that is faster then Apache's mod_ssl. My only Problem is that I can't get stunnel to work in transparent mode. When I try to access it from a remote IP I get timeouts connecting to the Non-SSL Server. I'm prettymuch relying on the manual in section "transparent": http://www.stunnel.org/static/stunnel.html Scenario: local 10.0.0.0/22 > Server with stunnel (10.0.3.48/22) > local apache My config: http://pastebin.com/BQmXeT5b Log: http://pastebin.com/enQTAWB9 "stunnel -sockets": http://pastebin.com/Zbz9FTr6 "iptables -L -v": http://pastebin.com/0b90Nay8 executing iptables, again: http://pastebin.com/T87cGPBX The apache listening on port 80 reporting hits from the Computers private IP but not from any remote IPs in the same network. Firewalls and stuff like that are not the Problem. The remote Computer can access port 80 without any Problems and it works fine when I switch from stunnel to apaches mod_ssl. My Testsetup is using 4.29 on ubuntu 10.10 GNU/Linux amd64 with kernel 2.6.35 and OpenSSL 0.9.8o Could anybody please point me in the rigth direction, I know that I'm missing something but I just can't figure it out. Thanks a lot, Ben

1 0

stunnel maximum clients to server
by bruce bushby 26 Mar '11

26 Mar '11

Hi I'm about to add stunnel to my buildroot embedded project (ARM926EJ-S) and I was hoping the list could answer a few performance questions? I've been looking for a way to encrypt the connections between my embedded units and my server. From what I understood about openvpn, the server starts to give problems beyond 1024 "concurrent sessions" .... I'm looking at a design that can handle 4K concurrent sessions....although it'll take a few years to get that big. My embedded devices have a GSM modem and setup a ppp0 interface over gprs. I'm considering stunnel in the hope that I could have up to 3000 stunnel connections coming into my servers. I say 3K because by the tike I reach this figure I hope to have implemented better switches and off load the overhead of the encrypted connection to the switch. The requirement is that the embedded "non-ssl aware client" will be able to communicate with the server over a secure tunnel. Am I completely on the wrong road? .... could stunnel cater for something like this? Thanks in advance!

3 2

Certificate request popup when clicking on MS Office links in a stunnel HTTPS redirect to Domino HTTP server?
by Josiah Fizer 25 Mar '11

25 Mar '11

We have a Lotus Domino server hosting some Microsoft Office documents. For improved security, I started using stunnel to redirect pacts from the HTTP servers via HTTPS. Everything works perfectly, however when a user clicks a document link they are prompted for login credentials or a certificate. This would seem to be because MS Office is trying to open the remote document in edit mode rather then downloading it locally or opening it in read mode. I've tried a number of stunnel configuration options but nothing seems to work. At current I am using the following simple configuration. Any insight into the issue would be appreciated. cert = stunnel.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 verify=0 [https] accept = 443 connect = localhost:80 TIMEOUTclose = 0

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Re: [stunnel-users] Windows Firewall has blocked some features of thisprogram
by jay＠experts-exchange.com 22 Mar '11

22 Mar '11

Hi Josealf, Thank you for your response and for this information. Is there a VB script or other method I can use for this purpose? I use a signed Java applet to download, install, and execute stunnel, but can insert a step to run a VB or other script on the host prior. I suspect the stunnel installer may do this already, but after looking, did not see anything. Thank you > You can add the required firewall exceptions as part of your installation > tasks. You just need to allow connections to the incoming port(s) your > stunnel config use. > > -----Original Message----- > From: jay(a)experts-exchange.com > Sender: stunnel-users-bounces(a)stunnel.org > Date: Mon, 21 Mar 2011 17:39:11 > To: <stunnel-users(a)stunnel.org> > Subject: [stunnel-users] Windows Firewall has blocked some features of > this > program > > Folks, > > While bundling stunnel with my user application, upon kick off I see this > error message.*1 Is there a way to avoid this security warning? I am > trying to figure out if signing the binaries will escape this situation, > or if it is related to the binary not containing a string table. I > investigated linking the win32 binary with MS Visual Studio 2005 to see > if > the presence of the version string info in the binary would help*2, but > so > far I have been unable to directly link. I originally built stunnel using > cygwin's mingw32-gcc*3, so linking using MSDEV is not too easy.*4 > > Thanks > > > Refs: > *1 "Windows Security Alert. To help protect your computer, Windows > Firewall has blocked some features of this program. Do you want to keep > blocking this program? Name: stunnel Publisher: Unknown" > > *2 stunnel/src/version.rc, > > // pdelaage TODO 20101111: this file works with MS VC / EVC > // But with MINGW, properties are NOT displayed in Windows Explorer > // although they are embedded in the final exe program. > // anyway, using a .o coming from MS VC does not change anything, > // and linking the gcc version.o with ms tools works! > // so the problem is in fact in gcc-linking, not in version.o. > > > *2 mingw64-i686-gcc-core 4.5.1-2 > > Administrator@MSDN-2005-DEV /cygdrive/c/dl/stunnel/stunnel-4.35/src > $ i686-w64-mingw32-gcc-4.5.1 -s -o stunnel.exe file.obj client.obj > log.obj > options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj > verify.obj sthreads.obj stunnel.obj gui.obj resources.obj > -L/cygdrive/c/openssl/lib -L/cygdrive/c/dl/stunnel/zlib-1.2.5 > -lcrypto.dll > -lssl.dll -lz -lws2_32 -lgdi32 -mwindows -v > Using built-in specs. > COLLECT_GCC=i686-w64-mingw32-gcc-4.5.1 > COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-w64-mingw32/4.5.1/lto-wrapper.exe > Target: i686-w64-mingw32 > Configured with: > /cygdrive/c/nnnew/gcc32/mingw64-i686-gcc-4.5.1-2/src/gcc-4.5.1/configure > --srcdir=/cygdrive/c/nnnew/gcc32/mingw64-i686-gcc-4.5.1-2/src/gcc-4.5.1 > --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin > --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var > --sysconfdir=/etc --datarootdir=/usr/share > --docdir=/usr/share/doc/mingw64-i686-gcc -C --build=i686-pc-cygwin > --host=i686-pc-cygwin --target=i686-w64-mingw32 > --with-sysroot=/usr/i686-w64-mingw32/sys-root > --with-build-sysroot=/usr/i686-w64-mingw32/sys-root --disable-multilib > --disable-win32-registry > --enable-languages=c,ada,c++,fortran,objc,obj-c++ > --enable-fully-dynamic-strings --enable-libgomp --enable-sjlj-exceptions > --enable-version-specific-runtime-libs --with-dwarf2 > --enable-decimal-float=bid --enable-lto > Thread model: win32 > gcc version 4.5.1 (GCC) > COMPILER_PATH=/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/bin/ > LIBRARY_PATH=/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/../lib32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/:/usr/i686-w64-mingw32/sys-root/mingw/lib/ > COLLECT_GCC_OPTIONS='-s' '-o' 'stunnel.exe' '-L/cygdrive/c/openssl/lib' > '-L/cygdrive/c/dl/stunnel/zlib-1.2.5' '-mwindows' '-v' '-mtune=generic' > '-march=pentiumpro' > /usr/lib/gcc/i686-w64-mingw32/4.5.1/collect2.exe > --sysroot=/usr/i686-w64-mingw32/sys-root -m i386pe --subsystem windows > -Bdynamic -o stunnel.exe -s > /usr/i686-w64-mingw32/sys-root/mingw/lib/crt2.o > /usr/lib/gcc/i686-w64-mingw32/4.5.1/crtbegin.o -L/cygdrive/c/openssl/lib > -L/cygdrive/c/dl/stunnel/zlib-1.2.5 -L/usr/lib/gcc/i686-w64-mingw32/4.5.1 > -L/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/../lib32 > -L/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib > -L/usr/i686-w64-mingw32/sys-root/mingw/lib file.obj client.obj log.obj > options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj > verify.obj sthreads.obj stunnel.obj gui.obj resources.obj -lcrypto.dll > -lssl.dll -lz -lws2_32 -lgdi32 -lmingw32 -lgcc_eh -lgcc -lmoldname > -lmingwex -lmsvcrt -lgdi32 -lcomdlg32 -luser32 -lkernel32 -ladvapi32 > -lshell32 -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt > /usr/lib/gcc/i686-w64-mingw32/4.5.1/crtend.o > > Administrator@MSDN-2005-DEV /cygdrive/c/dl/stunnel/stunnel-4.35/src > $ > > *4 Link attempt under windows: > > C:\dl\stunnel\stunnel-4.35\src>link /libpath:"C:\openssl\lib" > /libpath:"c:\dl\stunnel\zlib-1.2.5" /machine:I386 /nologo > /out:"stunnel.exe" /incremental:no /release /mapinfo:exports > /subsystem:windows /opt:ref /opt:icf wsock32.lib kernel32.lib user32.lib > gdi32.lib comdlg32.lib advapi32.lib shell32.lib msvcrt.lib libcmt.lib > libcrypto.a libssl.a libz.a file.obj client.obj log.obj options.obj > protocol.obj network.obj resolver.obj ssl.obj ctx.obj verify.obj > sthreads.obj stunnel.obj gui.obj resources.obj > msvcrt.lib(_stat.obj) : warning LNK4078: multiple '.drectve' sections > found with different attributes (00000A00) > options.obj : error LNK2019: unresolved external symbol ___chkstk > referenced in function _parse_conf > gui.obj : error LNK2019: unresolved external symbol _strdup referenced in > function _WinMain@16 > libcrypto.a(asn_mime.o) : error LNK2001: unresolved external symbol > __alloca > libcrypto.a(bss_file.o) : error LNK2019: unresolved external symbol > __alloca referenced in function _BIO_new_file > libcrypto.a(cryptlib.o) : error LNK2001: unresolved external symbol > __alloca > libcrypto.a(err_prn.o) : error LNK2001: unresolved external symbol > __alloca > libcrypto.a(bn_prime.o) : error LNK2001: unresolved external symbol > __alloca > libcrypto.a(b_print.o) : error LNK2019: unresolved external symbol > ___umoddi3 referenced in function _fmtint > libcrypto.a(bn_word.o) : error LNK2001: unresolved external symbol > ___umoddi3 > libcrypto.a(b_print.o) : error LNK2019: unresolved external symbol > ___udivdi3 referenced in function _fmtint > stunnel.exe : fatal error LNK1120: 5 unresolved externals > > C:\dl\stunnel\stunnel-4.35\src> > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > http://stunnel.mirt.net/mailman/listinfo/stunnel-users >

2 1

Windows Firewall has blocked some features of this program
by jay＠experts-exchange.com 22 Mar '11

22 Mar '11

Folks, While bundling stunnel with my user application, upon kick off I see this error message.*1 Is there a way to avoid this security warning? I am trying to figure out if signing the binaries will escape this situation, or if it is related to the binary not containing a string table. I investigated linking the win32 binary with MS Visual Studio 2005 to see if the presence of the version string info in the binary would help*2, but so far I have been unable to directly link. I originally built stunnel using cygwin's mingw32-gcc*3, so linking using MSDEV is not too easy.*4 Thanks Refs: *1 "Windows Security Alert. To help protect your computer, Windows Firewall has blocked some features of this program. Do you want to keep blocking this program? Name: stunnel Publisher: Unknown" *2 stunnel/src/version.rc, // pdelaage TODO 20101111: this file works with MS VC / EVC // But with MINGW, properties are NOT displayed in Windows Explorer // although they are embedded in the final exe program. // anyway, using a .o coming from MS VC does not change anything, // and linking the gcc version.o with ms tools works! // so the problem is in fact in gcc-linking, not in version.o. *2 mingw64-i686-gcc-core 4.5.1-2 Administrator@MSDN-2005-DEV /cygdrive/c/dl/stunnel/stunnel-4.35/src $ i686-w64-mingw32-gcc-4.5.1 -s -o stunnel.exe file.obj client.obj log.obj options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj verify.obj sthreads.obj stunnel.obj gui.obj resources.obj -L/cygdrive/c/openssl/lib -L/cygdrive/c/dl/stunnel/zlib-1.2.5 -lcrypto.dll -lssl.dll -lz -lws2_32 -lgdi32 -mwindows -v Using built-in specs. COLLECT_GCC=i686-w64-mingw32-gcc-4.5.1 COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-w64-mingw32/4.5.1/lto-wrapper.exe Target: i686-w64-mingw32 Configured with: /cygdrive/c/nnnew/gcc32/mingw64-i686-gcc-4.5.1-2/src/gcc-4.5.1/configure --srcdir=/cygdrive/c/nnnew/gcc32/mingw64-i686-gcc-4.5.1-2/src/gcc-4.5.1 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/mingw64-i686-gcc -C --build=i686-pc-cygwin --host=i686-pc-cygwin --target=i686-w64-mingw32 --with-sysroot=/usr/i686-w64-mingw32/sys-root --with-build-sysroot=/usr/i686-w64-mingw32/sys-root --disable-multilib --disable-win32-registry --enable-languages=c,ada,c++,fortran,objc,obj-c++ --enable-fully-dynamic-strings --enable-libgomp --enable-sjlj-exceptions --enable-version-specific-runtime-libs --with-dwarf2 --enable-decimal-float=bid --enable-lto Thread model: win32 gcc version 4.5.1 (GCC) COMPILER_PATH=/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/bin/ LIBRARY_PATH=/usr/lib/gcc/i686-w64-mingw32/4.5.1/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/../lib32/:/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/:/usr/i686-w64-mingw32/sys-root/mingw/lib/ COLLECT_GCC_OPTIONS='-s' '-o' 'stunnel.exe' '-L/cygdrive/c/openssl/lib' '-L/cygdrive/c/dl/stunnel/zlib-1.2.5' '-mwindows' '-v' '-mtune=generic' '-march=pentiumpro' /usr/lib/gcc/i686-w64-mingw32/4.5.1/collect2.exe --sysroot=/usr/i686-w64-mingw32/sys-root -m i386pe --subsystem windows -Bdynamic -o stunnel.exe -s /usr/i686-w64-mingw32/sys-root/mingw/lib/crt2.o /usr/lib/gcc/i686-w64-mingw32/4.5.1/crtbegin.o -L/cygdrive/c/openssl/lib -L/cygdrive/c/dl/stunnel/zlib-1.2.5 -L/usr/lib/gcc/i686-w64-mingw32/4.5.1 -L/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib/../lib32 -L/usr/lib/gcc/i686-w64-mingw32/4.5.1/../../../../i686-w64-mingw32/lib -L/usr/i686-w64-mingw32/sys-root/mingw/lib file.obj client.obj log.obj options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj verify.obj sthreads.obj stunnel.obj gui.obj resources.obj -lcrypto.dll -lssl.dll -lz -lws2_32 -lgdi32 -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt -lgdi32 -lcomdlg32 -luser32 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt /usr/lib/gcc/i686-w64-mingw32/4.5.1/crtend.o Administrator@MSDN-2005-DEV /cygdrive/c/dl/stunnel/stunnel-4.35/src $ *4 Link attempt under windows: C:\dl\stunnel\stunnel-4.35\src>link /libpath:"C:\openssl\lib" /libpath:"c:\dl\stunnel\zlib-1.2.5" /machine:I386 /nologo /out:"stunnel.exe" /incremental:no /release /mapinfo:exports /subsystem:windows /opt:ref /opt:icf wsock32.lib kernel32.lib user32.lib gdi32.lib comdlg32.lib advapi32.lib shell32.lib msvcrt.lib libcmt.lib libcrypto.a libssl.a libz.a file.obj client.obj log.obj options.obj protocol.obj network.obj resolver.obj ssl.obj ctx.obj verify.obj sthreads.obj stunnel.obj gui.obj resources.obj msvcrt.lib(_stat.obj) : warning LNK4078: multiple '.drectve' sections found with different attributes (00000A00) options.obj : error LNK2019: unresolved external symbol ___chkstk referenced in function _parse_conf gui.obj : error LNK2019: unresolved external symbol _strdup referenced in function _WinMain@16 libcrypto.a(asn_mime.o) : error LNK2001: unresolved external symbol __alloca libcrypto.a(bss_file.o) : error LNK2019: unresolved external symbol __alloca referenced in function _BIO_new_file libcrypto.a(cryptlib.o) : error LNK2001: unresolved external symbol __alloca libcrypto.a(err_prn.o) : error LNK2001: unresolved external symbol __alloca libcrypto.a(bn_prime.o) : error LNK2001: unresolved external symbol __alloca libcrypto.a(b_print.o) : error LNK2019: unresolved external symbol ___umoddi3 referenced in function _fmtint libcrypto.a(bn_word.o) : error LNK2001: unresolved external symbol ___umoddi3 libcrypto.a(b_print.o) : error LNK2019: unresolved external symbol ___udivdi3 referenced in function _fmtint stunnel.exe : fatal error LNK1120: 5 unresolved externals C:\dl\stunnel\stunnel-4.35\src>

2 1

stunnel in DMZ : accept=22 / connect=other.server.net:22 - gets stuck! - need help!
by Bernhard.Baeumle＠mt.com 17 Mar '11

17 Mar '11

Hi I use stunnel on a DMZ server for tunnelling/forwarding/proxying... (whatever term is correct). The situation is as follows: Hardware : External PC <==> DMZ server <==> company-internal server Operational : https://xxx.yy.zz (443) <==> (443) stunnel (80) <==> (80) SVN Server listening on port 80 NEW/NEED HELP : plink (22) <==> (22) stunnel (22) <==> (22) sshd listening on port 22 stunnel.conf (on the DMZ server) looks like this: cert = my_tunnel.pem key = my_tunnel.pem socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 socket = a:SO_REUSEADDR=0 debug = 7 output = C:\Program Files (x86)\stunnel\stunnel.log ;client = yes [forward_443_to_80] accept = 443 connect = my.company-server.net:80 [forward_22] accept = 22 connect = my.company-server.net:22 NOTE: Forwarding 443 to my.company-server.net:80 => WORKS FINE! NOW I try SSH with my PC connected to the company's network (without hopping at the DMZ): "plink -A -v -l username -i cert_file -P 22 dmz-server-name.net" => THIS WORKS FINE! NOW I try SSH with my PC from external network (which needs hopping at the DMZ): "plink -A -v -l username -i cert_file -P 22 dmz-server-name.net" Firewalls and ports seem to be open. The stunnel.log looks like this: <<starting stunnel service>> 2011.03.17 15:27:09 LOG5[4772:3852]: Reading configuration from file stunnel.conf 2011.03.17 15:27:09 LOG7[4772:3852]: Snagged 64 random bytes from C:/.rnd 2011.03.17 15:27:09 LOG7[4772:3852]: Wrote 1024 new random bytes to C:/.rnd 2011.03.17 15:27:09 LOG7[4772:3852]: PRNG seeded successfully 2011.03.17 15:27:09 LOG6[4772:3852]: Could not load DH parameters from my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: ECDH initialized 2011.03.17 15:27:09 LOG7[4772:3852]: Certificate: my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: Certificate loaded 2011.03.17 15:27:09 LOG7[4772:3852]: Key file: my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: Private key loaded 2011.03.17 15:27:09 LOG7[4772:3852]: SSL context initialized for service forward_443_to_80 2011.03.17 15:27:09 LOG6[4772:3852]: Could not load DH parameters from my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: ECDH initialized 2011.03.17 15:27:09 LOG7[4772:3852]: Certificate: my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: Certificate loaded 2011.03.17 15:27:09 LOG7[4772:3852]: Key file: my_tunnel.pem 2011.03.17 15:27:09 LOG7[4772:3852]: Private key loaded 2011.03.17 15:27:09 LOG7[4772:3852]: SSL context initialized for service forward_22 2011.03.17 15:27:09 LOG5[4772:3852]: Configuration successful 2011.03.17 15:27:09 LOG5[4772:3852]: No limit detected for the number of clients 2011.03.17 15:27:09 LOG7[4772:3852]: accept socket: FD=168 allocated (non-blocking mode) 2011.03.17 15:27:09 LOG7[4772:3852]: Option SO_REUSEADDR set on accept socket 2011.03.17 15:27:09 LOG7[4772:3852]: Service forward_443_to_80 bound to 0.0.0.0:443 2011.03.17 15:27:09 LOG7[4772:3852]: Service forward_443_to_80 opened FD=168 2011.03.17 15:27:09 LOG7[4772:3852]: accept socket: FD=280 allocated (non-blocking mode) 2011.03.17 15:27:09 LOG7[4772:3852]: Option SO_REUSEADDR set on accept socket 2011.03.17 15:27:09 LOG7[4772:3852]: Service forward_22 bound to 0.0.0.0:22 2011.03.17 15:27:09 LOG7[4772:3852]: Service forward_22 opened FD=280 2011.03.17 15:27:09 LOG5[4772:3852]: stunnel 4.35 on x86-pc-mingw32-gnu with OpenSSL 1.0.0c 2 Dec 2010 2011.03.17 15:27:09 LOG5[4772:3852]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 <<calling plink...>> 2011.03.17 15:27:26 LOG7[4772:4208]: local socket: FD=320 allocated (non-blocking mode) 2011.03.17 15:27:26 LOG7[4772:4208]: Service forward_22 accepted FD=320 from 123.4.5.6:2950 2011.03.17 15:27:26 LOG7[4772:4208]: Creating a new thread 2011.03.17 15:27:26 LOG7[4772:4208]: New thread created 2011.03.17 15:27:26 LOG7[4772:4756]: Service forward_22 started 2011.03.17 15:27:26 LOG7[4772:4756]: Option TCP_NODELAY set on local socket 2011.03.17 15:27:26 LOG5[4772:4756]: Service forward_22 accepted connection from 123.4.5.6:2950 2011.03.17 15:27:26 LOG7[4772:4756]: SSL state (accept): before/accept initialization <<and here it gets stuck!!!!!!!>> plink says: Looking up host "dmz-server-name.net" Connecting to 123.12.1.1 port 22 <<and here it gets stuck!!!!!!!>> PLEASE HELP!!!

2 1

SSL_read: 140D5042: error:140D5042:SSL routines:SSL3_CTRL:called a function you should not call
by Julian Ramirez 16 Mar '11

16 Mar '11

Hello all, I am using stunnel in order to send encrypted http request/response messages to an external system called Tradeweb. Our python program sends the message to stunnel and stunnel sends it to Tradeweb through a proxy. My version of stunnel is the following stunnel 4.35 on sparc-sun-solaris2.10 with OpenSSL 0.9.8r 8 Feb 2011 and it has been installed in a Solaris 10 operating system. My configuration file looks like this CAfile=/home/aps/tfk/stunnel/etc/stunnel/tradeweb_ca.cer client=yes verify=2 debug=7 output=stunnel.log [TradeXpress] # Port on which STUNNEL listens for local connections accept=stunnelserveripaddress:17000 # Destination address and port of TW data-center libwrap=no connect=proxyipaddress:80 protocol=connect protocolHost=tradewebipaddress:443 I have a python program that sends a http post message to stunnel. When I send the message I can see the following in the log (see below) The message gets to the other end (tradeweb system), but it looks like the encryption does not work properly. The relevant lines of the log are (see full log below) 2011.03.14 18:24:19 LOG7[6089:2]: SSL alert (write): warning: no certificate 2011.03.14 18:29:25 LOG3[6089:2]: SSL_read: 140D5042: error:140D5042:SSL routines:SSL3_CTRL:called a function you should not call 2011.03.14 18:29:25 LOG5[6089:2]: Connection reset: 521 bytes sent to SSL, 0 bytes sent to socket Do you know what is the problem? Thank you, Julian 2011.03.14 18:23:54 LOG5[6083:1]: Reading configuration from file stunnel.conf 2011.03.14 18:23:54 LOG7[6083:1]: Snagged 64 random bytes from /home/usr/vptfk/.rnd 2011.03.14 18:23:54 LOG7[6083:1]: Wrote 1024 new random bytes to /home/usr/vptfk/.rnd 2011.03.14 18:23:54 LOG7[6083:1]: PRNG seeded successfully 2011.03.14 18:23:54 LOG7[6083:1]: Loaded verify certificates from /home/aps/tfk/stunnel/etc/stunnel/tradeweb_ca.cer 2011.03.14 18:23:54 LOG7[6083:1]: Loaded /home/aps/tfk/stunnel/etc/stunnel/tradeweb_ca.cer revocation lookup file 2011.03.14 18:23:54 LOG7[6083:1]: SSL context initialized for service TradeXpress 2011.03.14 18:23:54 LOG5[6083:1]: Configuration successful 2011.03.14 18:23:54 LOG5[6083:1]: No limit detected for the number of clients 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=5 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=6 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=7 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=8 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=9 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: libwrap_init: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: signal_pipe: FD=4 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: signal_pipe: FD=10 allocated (blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: accept socket: FD=11 allocated (non-blocking mode) 2011.03.14 18:23:54 LOG7[6083:1]: Option SO_REUSEADDR set on accept socket 2011.03.14 18:23:54 LOG7[6083:1]: Service TradeXpress bound to 0.0.0.0:17000 2011.03.14 18:23:54 LOG7[6083:1]: Service TradeXpress opened FD=11 2011.03.14 18:23:54 LOG7[6089:1]: Created pid file /home/aps/tfk/stunnel/var/run/stunnel/stunnel.pid 2011.03.14 18:23:54 LOG5[6089:1]: stunnel 4.35 on sparc-sun-solaris2.10 with OpenSSL 0.9.8r 8 Feb 2011 2011.03.14 18:23:54 LOG5[6089:1]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2011.03.14 18:23:54 LOG7[6089:1]: Dispatching signals from the signal pipe 2011.03.14 18:23:54 LOG7[6089:1]: Signal pipe is empty 2011.03.14 18:24:19 LOG7[6089:1]: local socket: FD=0 allocated (non-blocking mode) 2011.03.14 18:24:19 LOG7[6089:1]: Service TradeXpress accepted FD=0 from stunnelserveripaddress:61449 2011.03.14 18:24:19 LOG7[6089:2]: Service TradeXpress started 2011.03.14 18:24:19 LOG5[6089:2]: Service TradeXpress accepted connection from stunnelserveripaddress:61449 2011.03.14 18:24:19 LOG7[6089:2]: remote socket: FD=1 allocated (non-blocking mode) 2011.03.14 18:24:19 LOG6[6089:2]: connect_blocking: connecting proxyipaddress:80 2011.03.14 18:24:19 LOG7[6089:2]: connect_blocking: s_poll_wait proxyipaddress:80: waiting 10 seconds 2011.03.14 18:24:19 LOG5[6089:2]: connect_blocking: connected proxyipaddress:80 2011.03.14 18:24:19 LOG5[6089:2]: Service TradeXpress connected remote server from stunnelserveripaddress:61450 2011.03.14 18:24:19 LOG7[6089:2]: Remote FD=1 initialized 2011.03.14 18:24:19 LOG5[6089:2]: Negotiations for connect (client side) started 2011.03.14 18:24:19 LOG7[6089:2]: -> CONNECT tradewebipaddress:443 HTTP/1.1 2011.03.14 18:24:19 LOG7[6089:2]: -> Host: tradewebipaddress:443 2011.03.14 18:24:19 LOG7[6089:2]: -> 2011.03.14 18:24:19 LOG7[6089:2]: <- HTTP/1.1 200 Connection established 2011.03.14 18:24:19 LOG6[6089:2]: CONNECT request accepted 2011.03.14 18:24:19 LOG7[6089:2]: <- 2011.03.14 18:24:19 LOG5[6089:2]: Protocol negotiations succeeded 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): before/connect initialization 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 write client hello A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 read server hello A 2011.03.14 18:24:19 LOG7[6089:2]: Starting certificate verification: depth=1, /C=US/ST=New York/L=New York/O=TradeWeb LLC - The Online Bond Markets/OU=Network Administration/CN=TradeWeb LLC - The Online Bond Markets/emailAddress=bruce.mackinnon(a)tradeweb.c 2011.03.14 18:24:19 LOG5[6089:2]: Certificate accepted: depth=1, /C=US/ST=New York/L=New York/O=TradeWeb LLC - The Online Bond Markets/OU=Network Administration/CN=TradeWeb LLC - The Online Bond Markets/emailAddress=bruce.mackinnon(a)tradeweb.com 2011.03.14 18:24:19 LOG7[6089:2]: Starting certificate verification: depth=0, /C=US/ST=New Jersey/L=Jersey City/O=TradeWeb LLC - The Online Bond Markets/OU=STP Production/CN=62.189.50.234 2011.03.14 18:24:19 LOG5[6089:2]: Certificate accepted: depth=0, /C=US/ST=New Jersey/L=Jersey City/O=TradeWeb LLC - The Online Bond Markets/OU=STP Production/CN=62.189.50.234 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 read server certificate A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 read server certificate request A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 read server done A 2011.03.14 18:24:19 LOG7[6089:2]: SSL alert (write): warning: no certificate 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 write client certificate A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 write client key exchange A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 write change cipher spec A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 write finished A 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 flush data 2011.03.14 18:24:19 LOG7[6089:2]: SSL state (connect): SSLv3 read finished A 2011.03.14 18:24:19 LOG7[6089:2]: 0 items in the session cache 2011.03.14 18:24:19 LOG7[6089:2]: 1 client connects (SSL_connect()) 2011.03.14 18:24:19 LOG7[6089:2]: 1 client connects that finished 2011.03.14 18:24:19 LOG7[6089:2]: 0 client renegotiations requested 2011.03.14 18:24:19 LOG7[6089:2]: 0 server connects (SSL_accept()) 2011.03.14 18:24:19 LOG7[6089:2]: 0 server connects that finished 2011.03.14 18:24:19 LOG7[6089:2]: 0 server renegotiations requested 2011.03.14 18:24:19 LOG7[6089:2]: 0 session cache hits 2011.03.14 18:24:19 LOG7[6089:2]: 0 external session cache hits 2011.03.14 18:24:19 LOG7[6089:2]: 0 session cache misses 2011.03.14 18:24:19 LOG7[6089:2]: 0 session cache timeouts 2011.03.14 18:24:19 LOG6[6089:2]: SSL connected: new session negotiated 2011.03.14 18:24:19 LOG6[6089:2]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 2011.03.14 18:29:25 LOG3[6089:2]: SSL_read: 140D5042: error:140D5042:SSL routines:SSL3_CTRL:called a function you should not call 2011.03.14 18:29:25 LOG5[6089:2]: Connection reset: 521 bytes sent to SSL, 0 bytes sent to socket 2011.03.14 18:29:25 LOG7[6089:2]: Service TradeXpress finished (0 left) RAMIREZ Julián Technical Consultant Wall Street Systems <http://www.wallstreetsystems.com/> - Empowering Treasury, Trading and Settlement

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Stunnel configuration for multiple domains on single IP
by Amol 11 Mar '11

11 Mar '11

I was trying to configure stunnel to work for multiple domains on the same IP address, just wanted to know how to configure stunnel to listen on different ports? has anyone done it yet? [https-lo] cert=/etc/stunnel/ssl/group-cert.pem key = /etc/stunnel/ssl/lo.key accept=x.x.x.x:443 connect=x.xxx.xx.11:8000 TIMEOUTclose=0 xforwardedfor=yes [https-lo2] cert=/etc/stunnel/ssl/group2-cert.pem key = /etc/stunnel/ssl/lo2.key accept=xx.xx.xx.xx:444 connect=x.xxx.xx.11:80 TIMEOUTclose=0 xforwardedfor=yes but i still get this error when i access the second domain (lo2) (Error code: ssl_error_bad_cert_domain)

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Periodic stunnel 4.34 core dumps on AIX 5.3
by Allex, Paul M (USA E D EA STS) 11 Mar '11

11 Mar '11

Hello, I have noticed that stunnel will periodically core dump on AIX 5.3. My configuration: stunnel 4.34 AIX 5.3 OpenSSL 0.9.8m After some initial investigation, I did find the following post about stunnel core dumps on AIX 5.3: http://www.stunnel.org/pipermail/stunnel-users/2007-April/001528.html Some of the core dumps were definitely due to this issue, so I rebuilt stunnel using the steps outlined in the post. Now I do not see the stack overflow core dumps, however I am still seeing other cores. These cores have little to no valuable information in them, so I do not have a lot to go off of. The one thing I have noticed is that stunnel seems to be consuming more and more memory over time. I set up several tests to see what would be causing this. Tests: 1. Send large amounts of data through stunnel using a simple client and server. This seemed to have no affect on the long term memory usage of stunnel. 2. Repeatedly create and drop connections to stunnel. For this I wrote a short script that simply creates a connection to stunnel using telnet in a a tight loop. I did not start anything for the stunnel instance to connect to, so telnet would create a connection and get it closed immediately. telnet --> stunnel --> nothing The process started with a size of 836 KB and seems to increase by about .1 to .2 KB per connection. $ count=1; while true; do tn localhost 10500; echo $count; count=$(( count + 1 )); done Trying... Escape character is '^T'. Connection closed. 1 ... Trying... Connected to loopback. Escape character is '^T'. Connection closed. 15475 Trying... Connected to loopback. Escape character is '^T'. Connection closed. 15476 Trying... Connected to loopback. Escape character is '^T'. Connection closed. 15477 $ monitor_process test_stunnel Size: 836 ... Size: 2556 Size: 2564 Size: 2564 Size: 2564 Size: 2568 Size: 2572 Size: 2572 Size: 2592 I have not dug into the code yet, so I suppose that will be my next task. If anyone has any ideas or suggestions on what else to look at, I would really appreciate it. Thanks, Paul Allex

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Re: [stunnel-users] Periodic stunnel 4.34 core dumps on AIX 5.3
by Allex, Paul M (USA E D EA STS) 10 Mar '11

10 Mar '11

I let the connection/memory script run over night and it appears that stunnel's memory usage has plateaued at 131,432 KB. I'm not sure how many connections had occurred when the memory usage leveled of, but currently there have been over 1.7 million connections to stunnel. I guess for now, please don't waste any time on this issue until I gather more information. Paul Allex

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error:14094412:SSL routines:SSL3_READ_BYTES:sslv3
by don-stunnel-zyx＠isis.cs3-inc.com 04 Mar '11

04 Mar '11

stuff in [brackets] is replaced to protect the innocent stunnel.conf: ================ debug=5 output=/root/stunnel.log cert=/etc/pki/tls/certs/[certfile] CAfile=/etc/pki/tls/certs/[bundle].crt key=/etc/pki/tls/private/[private-key].key [debug] accept=801 client=yes connect=[...].com:443 ================ I then connect to localhost:801 and stunnel.log contains: ================ 2011.02.28 19:18:45 LOG5[20520:3086252944]: debug connected from 127.0.0.1:38472 2011.02.28 19:18:46 LOG3[20520:3086252944]: SSL_connect: 14094412: error:14094412:SSL routines:SSL3_READ_BYTES:sslv3 alert bad certificate 2011.02.28 19:18:46 LOG5[20520:3086252944]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket ================ I don't see anything wrong with the cert or private key - the following demo shows that at least openssl is happy with them: ================ echo "hello there" | openssl rsautl -certin -inkey /etc/pki/tls/certs/[certfile] -encrypt |openssl rsautl -inkey /etc/pki/tls/private/[private-key].key -decrypt hello there I've captured the packets sent between stunnel and the server and wireshark shows (at ssl level) client SSLv3 Client Hello server SSLv3 Server Hello, Certificate, Certificate Request, Server Hello Done client SSLv3 Certificate, Client Key Exchange, Certificate Verify, Change Cipher Spec, Encrypted Handshake Message server SSLv3 Alert (Level: Fatal, Description: Bad Certificate) followed by TCP resets So the server is complaining about my certificate. This is certainly not what I would have guessed the message in the log meant. It looks like an error from stunnel. So is it an error from stunnel or is it stunnel reporting a complaint from the server? And if the latter, what exactly did the server send? The entire message starting with error? or starting with 14094412? or what? Could this mean that the server doesn't understand the certificate (cause it's a 2K certificate instead of 1K?) or could it mean that the server doesn't like it for some other reason?

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curl: (35) error:14094412:SSL routines:SSL3_READ_BYTES:sslv3
by don-stunnel-zyx＠isis.cs3-inc.com 01 Mar '11

01 Mar '11

Here's my command curl -E /root/key-cert https://ewsg-cert.prudent... and the result: curl: (35) error:14094412:SSL routines:SSL3_READ_BYTES:sslv3 alert bad certificate This seems weird to me: Note that this certificate is the private key and the private certificate concatenated! I assume the private certificate is just the certificate. In any case my file key-cert looks like -----BEGIN RSA PRIVATE KEY----- ... -----END RSA PRIVATE KEY----- -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- What does the error above mean and what could I possibly be doing wrong to cause it?

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forcing my untangle server to scan my https traffic
by Bing H Bang 01 Mar '11

01 Mar '11

I'm so close to making this work, I can taste it. I also need some suggestions on how to fix the last hurdle. My setup 10.0.0.10 ip of my webserver 24.159.165.122 static ip of my untangle server (router mode) untangle server port forwards 443 to 10.0.0.10:10443 80 to 10.0.0.10:80 (web server only listens on 443) stunnel config file on the web server [https-terminate] client = no cert = /var/lib/stroot/cypherdog.com.pem accept = 10.0.0.10:10443 connect = 24.159.165.122:80 [https-re-engage] client = yes accept = 10.0.0.10:80 connect = 10.0.0.10:443 What I'm trying to do is accept https traffic, decrypt it, pass it through untangle, then encrypt it back as it gets delivered to the https port of the web server. This setup works in that I can point my browser at the https port of my untangle server and the web pages work properly. What doesn't work is the untangle server shows no scanning activity when I access the web pages. I think the path webserver->untangle->webserver does not trigger the scanning in untangle because the traffic it sees is from an internal ip going to the same internal ip. Is there a way to fix this, anyone?

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Upgrade of evil.patch for version 4.35
by Jeremie Le Hen 22 Feb '11

22 Feb '11

Hi Michal, One of my former coworker and now friend undertook the upgrade of contrib/misc/evil.patch against the latest stunnel version. Would you mine putting this new version on your FTP site please? Thanks a lot. Regards, -- Jeremie Le Hen Humans are born free and equal. But some are more equal than others. Coluche

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Problems SSLifying an "exec" Service without KeepAlive
by Jochen Bern 22 Feb '11

22 Feb '11

Hello everyone, today I tried to set up network access to a service using stunnel 4.35. The underlying service, by default, exits after every request+reply. When running stunnel in daemon mode, this seems to upset things such that subsequent connections hang. I cannot quite pinpoint whether it's a config problem, design (of my setup) problem, or bug, so any help's welcome ... More info: The underlying service accesses a Nagios' livestatus interface > http://mathias-kettner.de/checkmk_livestatus.html#H1:Remote%20access%20to%2… using the "unixcat" tool provided. Unless you specifically request connection keepalives, unixcat will close/exit after answering one request, *or* timing out waiting for one. That "exit procedure", AFAICT, isn't different from what the imapd or pppd in the stunnel(8) manpage's EXAMPLES section do ... I need to secure access to the service, so I'm throwing client cert verification and libwrap at the connections. The current daemon mode configuration (with several commented-out attempts) reads, slightly anonymized: client=no verify=3 pid=/var/run/stunnel/livestatus.pid #setuid=stunnel #socket = a:SO_REUSEADDR=0 #foreground= yes [livestatus] accept = [...PORT...] cert = [...SERVER...].pem key = [...SERVER...].key CAfile = [...CA...].pem CApath = [...TempStagingDirectory...] exec = /usr/local/bin/unixcat execargs = unixcat /var/lib/nagios3/rw/live pty = yes retry = no session = 3 #TIMEOUTclose = 0 #TIMEOUTbusy = 5 #TIMEOUTidle = 5 After starting the stunnel daemon, I can perform *one* normal connection: > # openssl s_client -CAfile [...CA...].pem -showcerts \ > > -connect [...SERVER...]:[...PORT...] -cert [...CLIENT...].cert \ > > -key [...CLIENT...].key -state > CONNECTED(00000003) > SSL_connect:before/connect initialization > SSL_connect:SSLv2/v3 write client hello A > SSL_connect:SSLv3 read server hello A [...] > SSL handshake has read 1743 bytes and written 1933 bytes > --- > New, TLSv1/SSLv3, Cipher is AES256-SHA > Server public key is 1024 bit > Compression: NONE > Expansion: NONE > SSL-Session: > Protocol : TLSv1 > Cipher : AES256-SHA > Session-ID: 1B4221E2917E3BD49AA2102C2CCE60A624DB256D6B4D61F9D0D77EA843DC31BC > Session-ID-ctx: > Master-Key: 57E6DF8E7E0A741B718E356467450DD00969465295A9C6FE03416ED16E74AF93058EC168EF6DF1B9F3F637F505FF6EF4 > Key-Arg : None > Start Time: 1298390481 > Timeout : 300 (sec) > Verify return code: 0 (ok) > --- At that point, I can type in one request, then unixcat terminates, stunnel closes the connection and s_client (?) reports: > read:errno=104 Typical log output on the server side: > LOG5[30042:139819109037792]: Reading configuration from file /etc/stunnel/livestatus.conf > LOG5[30042:139819109037792]: Peer certificate location [...TempStagingDirectory...] > LOG5[30042:139819109037792]: Configuration successful > LOG5[30042:139819109037792]: No limit detected for the number of clients > LOG5[30043:139819109037792]: stunnel 4.35 on x86_64-unknown-linux-gnu with OpenSSL 0.9.8g 19 Oct 2007 > LOG5[30043:139819109037792]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 [...] > LOG5[30043:1075198288]: Service livestatus accepted connection from [...CLIENT...]:39287 > LOG5[30043:1075198288]: Certificate accepted: depth=1, [...CA...] > LOG5[30043:1075198288]: Certificate accepted: depth=0, [...CLIENT...] > LOG3[30043:1075198288]: readsocket: Input/output error (5) > LOG5[30043:1075198288]: Connection reset: 2293 bytes sent to SSL, 33 bytes sent to socket Rerunning the exact same command stops dead after the > CONNECTED(00000003) and manually "telnet"ing to the port from a different host doesn't behave in a normal way (closing the connection after I type the first line of non-SSL stuff) anymore, either. Running the unixcat command from a local command line, however, still works normally. I tried running stunnel off inetd, which seems to work, so I'd guess it's the server-side SSL session cacheing which interferes. However, I don't see any related stunnel config keywords in the manpage, and stunnel offering a cached session to a connection *from a different client host* sound odd to me, too ... ? Kind regards, J. Bern -- Jochen Bern, Systemingenieur --- LINworks GmbH <http://www.LINworks.de/> Postfach 100121, 64201 Darmstadt | Robert-Koch-Str. 9, 64331 Weiterstadt PGP (1024D/4096g) FP = D18B 41B1 16C0 11BA 7F8C DCF7 E1D5 FAF4 444E 1C27 Tel. +49 6151 9067-231, Zentr. -0, Fax -299 - Amtsg. Darmstadt HRB 85202 Unternehmenssitz Weiterstadt, Geschäftsführer Metin Dogan, Oliver Michel

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New and Utterly Confused on Ubuntu Linux
by Traps 20 Feb '11

20 Feb '11

I am totally new to stunnel and am quite confused. I use Ubuntu 10.04 and have installed the stunnel4 deb package. I need to do a couple of things. At boot up I need to accept ssl connections on an inbound port and forward it to a non-ssl compliant app listening on another port. The second thing I need to do is make an ssl required connection to a pop server on another host out of a non-ssl mail client on the local machine. I have no problem with the ports, port forwarding, etc. I just do not know how to set up stunnel to accomplish this. Let's just use this as an example: 1. I need to accept inbound ssl connections on 995 (port 995 is open) and send them to the local machine non-ssl client listening on 2995. 2. I need to ssl connect to pop.gmail.com:995 via a non-ssl mail client on the local machine and I want the mail client to connect to stunnel on port 3995. 3. I need both of these scenarios to start at boot up. I don't even know where to start with stunnel4 to do this. Actually I can set up stunnel.conf for either but one's a server operation and the other is a client operation and can't get them both to work simultaneously. To start stunnel at boot up I simply edited /etc/default/stunnel and /etc/init.d/stunnel4 and changed ENABLED=0 to ENABLED=1 in both files. Something tells me this is entirely the wrong way to do what I want to do. It works for either the client task or the server task, depending on which one I have enabled in stunnel.conf but I just know this is not how I am suppose to be doing it. Will someone help? -- View this message in context: http://old.nabble.com/New-and-Utterly-Confused-on-Ubuntu-Linux-tp30970693p3… Sent from the Stunnel - Users mailing list archive at Nabble.com.

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