Remote Access, reverse ssh

haxcess · 12-07-2005, 09:17 AM

Here's the deal: I want to access a shell from the other side of the firewall. I can't ssh into the machine, because the firewall kills all incomming connections. So X is behind the firewall and O is me.

My idea was to make X initiate an SSH session to O, and then somehow O can use the tunnel.

I have root on both machines. My thoughts were to encrypt a script and have X download it with a cron job, decrypt and execute.

I just don't know how to reverse the connection. Any ideas?

Thanks a ton!
Alex.

david_ross · 12-09-2005, 11:47 AM

On X you would need to connect to O with:
ssh -R 2222:X:22 -l root -N O

Then from O you could connect to X with:
ssh -p 2222 O