stunnel-users March 2023

8 participants
7 discussions

older browsers, stunnel and privoxy
by kovacs janos 04 Mar '24

04 Mar '24

sorry to bother, im trying to make older browsers be able to display TLS 1.1 and TLS 1.2 sites. i heard stunnel cant be configured to always forward to the current site address dynamically, thats why i would use privoxy. the browser is configured to send to: 127.0.0.1 443 stunnel config has this at the end: [Tunnel_in] client = yes accept = 127.0.0.1:443 connect = 127.0.0.1:8118 verifyChain = yes CAfile = ca-certs.pem checkHost = localhost 127.0.0.1:8118 is the privoxy address. this is what stunnel writes: LOG5[main]: Configuration successful LOG5[0]: Service [Tunnel_in] accepted connection from 127.0.0.1:3261 LOG5[0]: s_connect: connected 127.0.0.1:8118 LOG5[0]: Service [Tunnel_in] connected remote server from 127.0.0.1:3262 and the browser infinitely loads, and never loads anything or leaves the page. if i remove the last 3 lines, its the same just with this line added: LOG4[main]: Service [Tunnel_in] needs authentication to prevent MITM attacks but it doesnt give an error or anything. with a configuration like: [Tunnel_out] client = no accept = 127.0.0.1:443 connect = 127.0.0.1:8118 cert = stunnel.pem this is what it gives: LOG5[3]: Service [Tunnel_out] accepted connection from 127.0.0.1:3294 LOG3[3]: SSL_accept: 1407609B: error:1407609B:SSL routines:SSL23_GET_CLIENT_HELLO:https proxy request LOG5[3]: Connection reset: 0 byte(s) sent to TLS, 0 byte(s) sent to socket and browser gives a server not found error immediately. im not even sure if i should use client or server configuration in a case like this, but none of them works anyway. all i would need is for my browser to get the pages decrypted, or at least in less than TLS1.1. like how on newipnow.com i can access sites with any encryption, since they are sent to the browser without encryption. the browser just gives an "unencrypted tunnel" warning, which is how i found stunnel, and which is exactly what i need, just locally.

8 41

TPM based mutual tls authentication
by Nyiri, Gabor (Nokia - HU/Budapest) 07 Nov '23

07 Nov '23

Hi, Can you help me how to configure stunnel client to use TPM for mutual TLS authentication? I want to connect with mTLS to a remote server then make this connection available for localhost without mTLS. Thanks for your help in advance! Here is my configuration so far without TPM: debug = debug output = /tmp/stunnel.log foreground = yes [mtls_client] client = yes accept = 127.0.0.1:12019 sni = server-with-mtls.example.com checkHost = server-with-mtls.example.com connect = 1.2.3.4:443 verifyChain = yes CApath = /etc/ssl/certs/ cert = client.crt key = client.key Thanks & br, Gábor Nyíri,

2 1

FW: Help with disabling SSLv3
by Eberhard 14 Mar '23

14 Mar '23

Actually I think the SSLv3 in the log is a lie - as this is also in the log just before the below: TLS state (connect): before/connect initialization TLS state (connect): SSLv3 write client hello A TLS state (connect): SSLv3 read server hello A So I am thinking the eliptic curve stuff is more likely the issue? Eric VICS, LLC Eric S Eberhard 2933 W Middle Verde Rd Camp Verde, AZ 86322 928-567-3727 (land line) 928-301-7537 (cell phone) http://www.vicsmba.com <http://www.vicsmba.com/> https://www.facebook.com/groups/286143052248115 _____________________________________________ From: Eberhard <flash(a)vicsmba.com> Sent: Tuesday, March 14, 2023 9:15 AM To: 'stunnel-users(a)stunnel.org' <stunnel-users(a)stunnel.org> Subject: Help with disabling SSLv3 Importance: High I am suddenly getting errors from Fedex: TLS state (connect): SSLv3 read server certificate A error queue: 1408D010: error:1408D010:SSL routines:ssl3_get_key_exchange:EC lib error queue: 100AE081: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group error queue: 100AF003: error:100AF003:elliptic curve routines:EC_GROUP_NEW_FROM_DATA:BN lib SSL_connect: 3078072: error:03078072:bignum routines:BN_EXPAND_INTERNAL:bignum too long My .conf file says: output = /tmp/fedex.log debug = 7 RNDfile = /visanet/ssl/stunnel.rnd RNDoverwrite = yes client = yes connect = ws.fedex.com:443 ;connect = gateway.fedex.com:443 ;connect = wssha1ends12172016.fedex.com:443 sslVersion = TLSv1.2 options = NO_SSLv3 sslVersionMin = TLSv1.2 CAfile = /usr/local/ssl/certs/cacert.pem It is a very old version of stunnel but I cannot upgrade as this is a 15 year old AIX (IBM) computer stunnel 5.44 on powerpc-ibm-aix4.3.3.0 platform Compiled/running with OpenSSL 1.0.2 22 Jan 2015 Threading:FORK Sockets:POLL,IPv4 TLS:ENGINE,FIPS,OCSP,PSK,SNI Invalid configuration file name "--version" realpath: No such file or directory (2) Yet the log implies I am still trying SSLv3. Any ideas? Thanks in advance. Eric VICS, LLC Eric S Eberhard 2933 W Middle Verde Rd Camp Verde, AZ 86322 928-567-3727 (land line) 928-301-7537 (cell phone) http://www.vicsmba.com <http://www.vicsmba.com/> https://www.facebook.com/groups/286143052248115

2 1

Help with disabling SSLv3
by Eberhard 14 Mar '23

14 Mar '23

I am suddenly getting errors from Fedex: TLS state (connect): SSLv3 read server certificate A error queue: 1408D010: error:1408D010:SSL routines:ssl3_get_key_exchange:EC lib error queue: 100AE081: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group error queue: 100AF003: error:100AF003:elliptic curve routines:EC_GROUP_NEW_FROM_DATA:BN lib SSL_connect: 3078072: error:03078072:bignum routines:BN_EXPAND_INTERNAL:bignum too long My .conf file says: output = /tmp/fedex.log debug = 7 RNDfile = /visanet/ssl/stunnel.rnd RNDoverwrite = yes client = yes connect = ws.fedex.com:443 ;connect = gateway.fedex.com:443 ;connect = wssha1ends12172016.fedex.com:443 sslVersion = TLSv1.2 options = NO_SSLv3 sslVersionMin = TLSv1.2 CAfile = /usr/local/ssl/certs/cacert.pem It is a very old version of stunnel but I cannot upgrade as this is a 15 year old AIX (IBM) computer stunnel 5.44 on powerpc-ibm-aix4.3.3.0 platform Compiled/running with OpenSSL 1.0.2 22 Jan 2015 Threading:FORK Sockets:POLL,IPv4 TLS:ENGINE,FIPS,OCSP,PSK,SNI Invalid configuration file name "--version" realpath: No such file or directory (2) Yet the log implies I am still trying SSLv3. Any ideas? Thanks in advance. Eric VICS, LLC Eric S Eberhard 2933 W Middle Verde Rd Camp Verde, AZ 86322 928-567-3727 (land line) 928-301-7537 (cell phone) http://www.vicsmba.com <http://www.vicsmba.com/> https://www.facebook.com/groups/286143052248115

1 0

Stunnel Installation.
by nathan.king＠unpredictableporridge.co.uk 12 Mar '23

12 Mar '23

Hello, New stunnel user here - or trying to ne! I manage a streaming service using both SHOUT and Icecast servers, on a Widows 10 platform. Have been hit by the update to the G/Chrome browser, and while the Website is secure, the streams are not. There is limited support for S.S.L. for Icecast, but none for SHOUTcast. Was recommended to use S.S.L., but apparently the OpenSSL library isn't downloaded for Widows, only Linux, so have tried using Debian 11, which have installed within VirtualBox. However, have had no luck making the connection. Happened to read in another tutorial that if stunnel isn't installed on the same Computer, as the Playout system and encoder - use B.U.T.T., and Sound Empire Caster - one has to have stunnel installed on both Computers? Is the above true? EIther way,, would appreciate some advice on how to resolve this issue, and am new to stunnel, and only a basic knowledge of Debian. Thanks for your help with this issue. Cheers.

3 8

stunnel as server dont connect to endpoint
by mahdi.section8＠gmail.com 05 Mar '23

05 Mar '23

hello everyone i have a setup of openvpn + stunnel stunnel(client) in a server stunnel(server) + openvpn in another server both were working fine until i moved the second server to another one i moved all openvpn and stunnel files to new one but even though its same stunnel it dont work properly i even compiled latest 5.69 version thinking it was a bug this is my stunnel config: setuid = root setgid = root [openvpn] cert=/etc/stunnel/cert.pem key=/etc/stunnel/key.pem accept = 0.0.0.0:1381 connect = 127.0.0.1:1194 its so simple yet idk whats the problem, cause in the logs i only see from stunnel that a connection from ip x accepted but nothing else saying that it connected to 127.0.0.1:1194 its just accepting connections and nothing more like it forgot there is a connect option there. but i confirm openvpn is correct as i tested with netcat and openvpn showed up in logs saying there is a connection but somehow stunnel dont connect to 127.0.0.1:1194 its crazy that either i forgot something or misconfig of stunnel cause its so simple and its not working

2 2

stunnel 5.69 released
by Michał Trojnara 04 Mar '23

04 Mar '23

Dear Users, I have released version 5.69 of stunnel. ### Version 5.69, 2023.03.04, urgency: MEDIUM * New features - Improved logging performance with the "output" option. - Improved file read performance on the WIN32 platform. - DH and kDHEPSK ciphersuites removed from FIPS defaults. - Set the LimitNOFILE ulimit in stunnel.service to allow for up to 10,000 concurrent clients. * Bugfixes - Fixed the "CApath" option on the WIN32 platform by applying https://github.com/openssl/openssl/pull/20312. - Fixed stunnel.spec used for building rpm packages. - Fixed tests on some OSes and architectures by merging Debian 07-tests-errmsg.patch (thx to Peter Pentchev). Home page: https://www.stunnel.org/ Download: https://www.stunnel.org/downloads.html SHA-256 hashes: 1ff7d9f30884c75b98c8a0a4e1534fa79adcada2322635e6787337b4e38fdb81 stunnel-5.69.tar.gz 66c4f3bbb94c4a274f2e8e98e3d44e74c0460d6494986f0a94b9b8becdc63cc3 stunnel-5.69-win64-installer.exe 74813a0be13270b5348fc4bc7c16ada668d151773be19f404db1176b7e22aafc stunnel-5.69-android.zip Best regards, Mike

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stunnel-users March 2023