ssh tunneling

I have a PC at home and one at work (both with Debian Etch). I like to have them connected, to share files easily. But a firewall is set at work, the result is that I can connect (with ssh) from work to home, but not from home to work. The only solution the administrator suggested to me was annoying as connect to a third PC that allowed the comunication from home to work. This meant copy twice every file from home to work.

A better solution is ssh tunneling. It is pretty easy: it worked just running this command in my PC at work:

ssh -R remote_port:localhost:22 home_computer

(where remote_port is the number of a port (like 2048), and home_computer is the IP address of the PC at home). And then, from home, I can connect to work with the following:

ssh -p 2048 localhost

If remote_port was chosen 2048, as before.
If the file file.home needs to be transfered from home to (~) at work, then scp also works fine:

scp -P 2048 file.home localhost:~

Linux's simply great.

REF.
brandonhutchinson.com
zg.mpg.de