[ubuntu-uk] SSH through FIrewall

[Iain Lane]

Adam Bagnall wrote:
> On Sat, 2008-05-10 at 09:37 +0100, Seif Attar wrote:
>> Hello,
>> ...
>> Is there a  way to gain access to that  machine through the firewall? is
>> there something she can do on her machine (like connect to my machine
>> via SSH and forword port 999 on my local machine to port 22 on her
>> machine) and then i can connect to my local machine:999 and gain access
>> to her machine, is such a thing possible? if yes, how do I go about it?
>> ...
> I think you can solve this problem using a reverse ssh tunnel. There's
> quite a bit of info on google. Someone else might know more but I've
> never tried it.

This should work. It will be even more robust if you use autossh to
automatically reconnect should either end go down. The command you want
to run on her machine is something like:

  screen autossh -R9999:localhost:22 mum at your.machine

Then SSH to 9999 on your machine to get to hers. Another option to
consider is a VPN, but this may be overkill for your situation.

Hope to help,
Iain