SSH Tunnels: Bypass (Almost) Any Firewall

Important note: It’s not our goal to encourage you to illegally bypass any restrictions set by the administrators of your network. We present a technology which is often helpful when working on a machine behind a firewall. If you are willing to use some tricks presented here to break through your company’s firewall, you have to understand that it may not be allowed in your corporation and you risk getting sacked. We take no responsibility for your actions. You’ve been warned.
This article is a continuation of a previous text: SSH tricks published in our vortal last month. The spirit of this article is a little bit different, though. It targets more experienced users, especially those who have to work in computer networks with harsh security rules. To make it clear - using SSH to tunnel insecure protocols like FTP or CVS is not in the scope. Perhaps another SSH article will cover this.

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