Stunnel (SSH tunneling network utility)

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Stunnel (SSH tunneling network utility)

#1 Post by Midas » Wed Jun 25, 2014 7:04 am

Stunnel is a multi-platform OSS network utility for secure computer communication through SSH (Secure SHell) based "network tunneling", allowing for convenient access to secure servers over the open Internet.

The official installer can be (Uni)extracted -- it's built with NSIS, and all needed files will be inside the '_•€' folder -- and settings are kept in 'stunnel.conf' inside program folder.

There's something of a learning curve to be able to use it, so reading of the (extensive) documentation is recommended; I'm listing below two resources I found that may help with it, since their pre-configured examples can work as guides...
  • 1. Stunnel_portable is a blat ( ... php?t=2690) bundle available from the blat Yahoo! group (which I took the liberty of mirroring to;

    2. Portable HFS is now an obsolete package (WARNING: includes Heartbleed afflicted OpenSSL v1.0.0c libraries!), but contains an example configuration file for stunnel v4.35, plus an AutoIt utility ('confmakr.exe') for setting needed configurations through the GUI (see ... ation-gui/).
    [url][/url] author wrote:The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. It can be used to add SSL functionality to commonly used inetd daemons like POP2, POP3, and IMAP servers without any changes in the programs' code. Stunnel uses the OpenSSL library for cryptography, so it supports whatever cryptographic algorithms are compiled into the library.
    • Image
Download stunnel current version (v5.02) from
(Softpedia mirror page: ... nnel.shtml)

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Re: Stunnel (SSH tunneling network utility)

#2 Post by webfork » Fri Jun 27, 2014 4:06 pm

Argh ... would have loved to play with this around 2 years ago as I was spending a whole lot of time trying to get a freeware SSH tunnel for Windows. Ah well, maybe I'll come back to it.

Thanks for posting.

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