[ubuntu-uk] SSH through FIrewall

[Rob Beard]

Iain Lane wrote:
> 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
> 

Presumably this could be run at bootup from rc.local?

Rob