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net::ERR_TIMED_OUT error when connecting to a websocket via stunnel
by Mike Alhayek 17 Aug '15

17 Aug '15

Hi, I hope someone can help me here as I have been stuck for the past 3 days. I need to allow a client to connect to a websocket running on server 10.0.4.160 on port 8080. I need to setup a secure tunnel to allow the client to connect to the websocket via port 58443. I installed the latest version of stunnel on my windows Server 2008 R2. Then I changed my stunnel.conf file to look like this [websockets] client = yes accept = 58443 connect = 8080 verify = 2 checkIP = 10.0.4.195 CAfile = ca-certs.pem debug = 7 OCSPaia = yes ##The rest have been removed I am expecting to open a connection from the user's console on port 58443 and the stunnel will allow the client to connect to port 8080 This is the code that I use in the client's console "Of course, the console is on a PC that is on my internal network" var conn = new WebSocket('wss://10.0.4.160:58443'); conn.onopen = function(e) { console.log("Connection established!"); }; conn.onmessage = function(e) { console.log(e.data); }; While on the server, I open up a command line and I execute this telnet localhost 8080 to open up a command line where I can see the incoming request. As soon as I fire the code above from a client javascript's console I see this in the server's command line [cid:image001.png@01D0D8E6.8F1CC750] But few seconds later I get this error in the client's console WebSocket connection to 'wss://10.0.4.160:58443/' failed: Error in connection establishment: net::ERR_TIMED_OUT If I try to send a command using conn.sent('Hello') I get this error VM289:2 Uncaught DOMException: Failed to execute 'send' on 'WebSocket': Still in CONNECTING state. at Error (native) at <anonymous>:2:6 at Object.InjectedScript._evaluateOn (<anonymous>:905:140) at Object.InjectedScript._evaluateAndWrap (<anonymous>:838:34) at Object.InjectedScript.evaluate (<anonymous>:694:21) Additionally, I tried to turn on debugging in strunnel by adding debug = 7 to the config file This is what I got in the stunnel console. I don't understand what is wrong as the logs show that the client is connected but I can't send messages from the client to the server 2015.08.16 16:40:06 LOG7[36]: Service [websockets] started 2015.08.16 16:40:06 LOG5[36]: Service [websockets] accepted connection from 10.0.4.195:21963 2015.08.16 16:40:06 LOG6[36]: s_connect: connecting 127.0.0.1:8080 2015.08.16 16:40:06 LOG7[36]: s_connect: s_poll_wait 127.0.0.1:8080: waiting 10 seconds 2015.08.16 16:40:06 LOG5[36]: s_connect: connected 127.0.0.1:8080 2015.08.16 16:40:06 LOG5[36]: Service [websockets] connected remote server from 127.0.0.1:50891 2015.08.16 16:40:06 LOG7[36]: Remote socket (FD=668) initialized 2015.08.16 16:40:06 LOG6[36]: SNI: sending servername: localhost 2015.08.16 16:40:06 LOG7[36]: SSL state (connect): before/connect initialization 2015.08.16 16:40:06 LOG7[36]: SSL state (connect): SSLv2/v3 write client hello A What am I doing wrong here? How come the connection keeps failing?

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Accept connection from sub-net?
by v v 12 Aug '15

12 Aug '15

Hi, Is it possible to configure stunnel server to accept connection from any IP in some subnet. For example, 111.22.33.xx. The proxy I connect through every time uses the different IP (from some IP pool) to connect to stunnel server. I don't want to add to the config file 255 possible host addresses. I don't see any suitable option in the stunnel documentation. Do I miss something? Any idea it could be done? Thanks, vov

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Problem in connecting with root directory with stunnel connection in Mac OS
by Saurabh Beriwal 07 Aug '15

07 Aug '15

Hello All I am installing stunnel as client in Mac machine. I am using below configuration. accept=127.0.0.1:119 connect=target server information I am able to start stunnel service and its getting bound also. Now when I try to open the remote server directory with root folder , this does not work. However if I specify a shared folder name then this does work. I am facing this problem in Mac OS 10.10. smb://127.0.0.1:119/ does not work. smb://127.0.0.1:119/folderName works fine. However, both cases work fine in case of windows using stunnel. Please let me know if someone has faced similar issue in Mac OS with stunnel connection. Kindly help. Regards Saurabh Beriwal

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STunnel nCipher openssl chil problems
by Marc Phillips 06 Aug '15

06 Aug '15

Has anyone managed to get STunnel to work with nCipher using the chil engine? STunnel appears to load the engine just fine, but failes when loading the key: [ ] Enabling support for engine "chil" [ ] Initializing engine #1 (chil) [ ] Engine #1 (chil) initialized [.] FIPS mode disabled [ ] Compression disabled [ ] PRNG seeded successfully [ ] Initializing service [https-server] [ ] Loading certificate from file: /usr/local/stunnel/etc/keystores/servercert.crt [ ] Loading key from engine: /usr/local/stunnel/etc/keystores/servercert.key [!] error queue: 26096080: error:26096080:engine routines:ENGINE_load_private_key:failed loading private key [!] ENGINE_load_private_key: 80069066: error:80069066:CHIL engine:HWCRHK_LOAD_PRIVKEY:chil error [!] Service [https-server]: Failed to initialize SSL context Using openssl directly, the key works fine (both with s_server and s_client). My stunnel config is pretty simple: pid = /usr/local/var/log/stunnel.pid debug = 7 output = /usr/local/var/log/stunnel.log options = -NO_SSLv3 engine = chil CApath = /usr/local/etc/cacerts/ [https-server] engineNum=1 accept = 4466 connect = 4433 cert=/usr/local/stunnel/etc/keystores/servercert.crt key=/usr/local/stunnel/etc/keystores/servercert.key R. Marc

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Install Guide for STunnel Version 5.22
by Deepak Subbanarasimha 05 Aug '15

05 Aug '15

All, Is there an install guide for Stunnel version 5.22 for windows? If so, could you point me to it? -Deepak IMPORTANT NOTICE: This email is intended solely for the use of the individual to whom it is addressed and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If the reader of this email is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately return the original message to the sender at the listed email address. In accordance with Kewill policy, emails sent and received may be monitored. Although Kewill takes reasonable precautions to minimize the risk, Kewill accepts no responsibility for any loss or damage should this email contain any virus, or similar destructive or mischievous code.

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"Chained" stunnel instances
by Michael Gebis 01 Aug '15

01 Aug '15

Hello. I have a question about a strange stunnel configuration; specifically, I'm like to use 'chained' stunnel instances, and I'm running into an issue. We have a conceptually simple setup: a client that connects to a server. We use stunnel both for encryption and for the failover mechanism. Here's a diagram of our simplest setup: /----S1 / C--st0-----S2 \ \----S3 We have a client that connects to stunnel. Our stunnel configuration lists three connections with "prio" failover mode. So usually, connections go from C thru st and onto Server 1. If S1 is down, st0 fails to connect to S1 and instead tries S2, and all is good. However, sometimes we may place an optional second instance of stunnel in front of the servers. /----st1--S1 / C--st0-----st2--S2 \ \----st3--S3 The failover mode of stunnel does not work so well in this configuration. If S1 is down, st0's failover algorithm does not kick in. Instead, st0 happily connects to st1, which is still alive and running. st1 then detects S1 is down and immediately closes the connection, but st0 does not care. Since the initial connection was successful, it does not initiate the failover algorithm. You may ask "why not change to round-robin mode?" The answer is that S1 is a dedicated machine, and S2/S3 are underpowered backups that have other primary responsibilities. We really want to direct all connections to S1 and only use S2/S3 in emergencies. You may also ask, "Why the second layer of stunnel?"--unfortunately, there are several hairy implementation-specific details that make this hard to change. My question is: is there any stunnel configuration option that can help us out? We would like the failover to work with and without the second layer of stunnel. From looking at the source code, I think I'm out of luck, but I figured it couldn't hurt to ask. Thanks! Michael

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stunnel 5.21 - fails to listen on both IPv4/IPv6 (Linux)
by Lonnie Abelbeck 30 Jul '15

30 Jul '15

Very long-time user with the AstLinux project... stunnel 5.19 works fine, when upgrading to stunnel 5.21 with the same config I get: -- Starting Stunnel Server Proxy... [.] stunnel 5.21 on i586-pc-linux-gnu platform [.] Compiled/running with OpenSSL 1.0.1p 9 Jul 2015 [.] Threading:FORK Sockets:POLL,IPv6 TLS:ENGINE,OCSP,PSK,SNI [ ] errno: (*__errno_location ()) [.] Reading configuration from file /etc/stunnel/server.conf [.] UTF-8 byte order mark not detected [ ] Compression disabled [ ] PRNG seeded successfully [!] Error resolving "::": Address family for nodename not supported (EAI_ADDRFAMILY) [!] /etc/stunnel/server.conf:14: "accept = :::8443": Failed to resolve accepting address -- Has the syntax changed to listen on both IPv4/IPv6 ? Lonnie

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Configuring stunnel on multi tenant server
by Saurabh Beriwal 30 Jul '15

30 Jul '15

Hi All, I want to configure stunnel on multi tenant server. Please let us know the best possible way to do this. Also is it OK if I keep multiple accept and connect parameters in stunnel configuration file. Thank you.

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stunnel 5.22 released
by Michal Trojnara 30 Jul '15

30 Jul '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear Users, I have released version 5.22 of stunnel. The ChangeLog entry: Version 5.22, 2015.07.30, urgency: HIGH * New features - "OCSPaia = yes" added to the configuration file templates. - Improved double free detection. * Bugfixes - Fixed a number of OCSP bugs. The most severe of those bugs caused stunnel to treat OCSP responses that failed OCSP_basic_verify() checks as if they were successful. - Fixed the passive IPv6 resolver (broken in stunnel 5.21). Home page: https://www.stunnel.org/ Download: https://www.stunnel.org/downloads.html SHA-256 hashes: 8ad628a6948153cdb2044283f6988384a30585ea7e14778c2ee616a6678cb83f stunnel-5.22.tar.gz 9b3fe70bcfeb64b013b7b926e475a7d100ef1fdf5ce352ad90ac1034f780ea2a stunnel-5.22-installer.exe 2f49313debe7af27feeab246a771dc513e5e368e1839e92fba4cfe0b2735aeba stunnel-5.22-android.zip Best regards, Mike -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVufy2AAoJEC78f/DUFuAUHVYQAK+keyqWyllv3ky5hRi8DlXe LLtuUdTYTalI64Fg5/TYL6+fbrEjWoAWtGwg+X/muVNj7KW4twlKrakMtkDpSDNd 0xSh94/u/PCrPVThxCq7AUbTPLyrG6ox5RKYDkOKfyGQ3q5ix6yba0l6fQqHXPCr OAbaRuwn5U6u7lPxXa69ozwyY5JHIiGqhMfQJBRXwFoeNbWak3HM7+Pe5DZ0ACLa SRY0iCseR1aQ12pZaaNoknkAAL9kmHgRP+fuPFqKMkp8TgZ2469qg30s/Bzn7n0U h5GvAuhYkQdDDbC7ozWgqaNxRNpOe+3RZ50fpCueyAlZESe8agHcyXchoj4JUVx+ 5ihOms4WujamCtP4MzHrRo6eQpeoGbw1EZ2P//Q9TlxX4METgEfV0lzaR7n376jr y24xIFEMl2tnqJ81lKQZWlxAP4MiKZgr//GOueRewRCtYSSQcK/mHvxZMDFfHAc7 N2LUmzm+PpsHwto7VkUy1m4eEAb34Tr3QubzvrT1yD4YMQDR6tID+xkRmuJWjMhf qBcXecKetIQq70KuI+VVqJxdP3Ekgjb+xnNOSKelUP/TkHpvubjTViSIVPu+5DSb x2viDBKAbgWcER2aZsB6UWXfQwjT/apDhqu6XrwjAcFfBk0ul0QazmH0HMc9ouVd yziOHVATYgcXYcTIQvj9 =DTOg -----END PGP SIGNATURE-----

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Questions between stunnel 4.56 and 5.21 (current version)
by Guy.Gaudreau.TCR06＠ssss.gouv.qc.ca 28 Jul '15

28 Jul '15

Will a 4.56 installation be able to establish a tunnel to a 5.21 version. Will a 5.21 installation be able to establsih a tunnel to a 4.56 version What happends If I have a server that is currently running a 4.56 version and we install the 5.21 version on the same server. Will both versions co-exist on the same server peacefully or will the install process uninstall the 4.56 version. in that last scenario will the tunnels already configured under versio 4.56 work under the 5.21 install? Thank you Guy Gaudreau

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