Dear Oraculo,

I want to connect two computers using ssh. One is at work, behind a firewall (which I have no access on it), and the other is mine, at home. I want to connect, from home, the one at work at night.

Obviously, the computer at work should be the server, and mine, the client. The point is that the firewall does not allow it, maybe blocking any SYN bit coming from outside of work.

Since I can establish communication when the client is at work and the server is at home, I can make the computer at work try connection periodically, and when I want, take control of the client. Do you know any way of doing that with ssh?

It is worth saying, I cannot ask IT guys any port forwarding.

Regards.

You can do this via the -R switch on the ssh command. You need to forward a port on the home machine to the work server. Do this by logging into the server at work and then ssh into your home computer with the -R switch. Something like: This will forward port 10022 on your home computer to the work server. The -N flag is to execute the port forward only, and not actually log in to the home PC.

After doing this, from the home computer do:This should log you into the server.

Be aware that the port forward connection can break or timeout, so putting the port forwarding command in a shell script that will reconnect automatically is a good idea.