Reverse SSH

BOXc ------------OK------------> BOXy
    <-----by-default--not-OK----
listening                     listening
port 2222                      port 22

     fw block all input
     fw permit all output

boxC~$ ssh -f -N -R 8888:localhost:2222 user@boxY
boxC~$ ssh -p22 user@boxY

boxY~$ ssh -p8888 user@localhost
password:
boxC~$ =)

See Also:

http://www.howtoforge.com/reverse-ssh-tunneling
http://en.gentoo-wiki.com/wiki/Reverse_Tunneling


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