Archive for November, 2009

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SSH tunnels part 3: Reverse tunnels

The problem addressed here is the same as the previous two, except that the remote administrator won’t open up *any* ports in their firewall. Machines on the customer’s network can connect out onto the internet, but there is no direct way to connect to them from out here. This post describes how to set up a pair of tunnels that meet in the middle, allowing me access to machines that don’t even have a public IP address.

4Nov2009 | cdwan | 0 comments | Continued
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SSH Tunnels – part 2

In a previous post I described how and why one might set up a very simple ssh tunnel in order to access a web server or a remote desktop server on a machine with a restrictive firewall. This post goes one step deeper, showing how to chain tunnels together.

1Nov2009 | cdwan | 1 comment | Continued