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sshportiptablesportforwarding

Temporary port forwarding

For family tech support hell (tm) I'm getting into ssh.

My plan:

  • Forward port 5022 to 5022 in router.
  • them@theircomputer$ ssh -L 5022:localhost:22 localhost
  • me@mycomputer$ ssh -p 5022 them@theircomputer

Result: ssh: connect to host theircomputer port 5022: Connection refused

It seems obvious ssh tunneling is supposed to tunnel requests not listens.

I don't want to give them ssh access to my system to set up a reverse tunnel that way.

I don't want to forward port 5022 to port 22 and I don't want to make ssh listen to port 5022 permanently (For security)

How do I temporarily forward port 5022 to port 22 on a system? (Preferably in a short oneliner!)

Solution

  • A bit more googling lead to the ssh flag -g 

        -g      Allows remote hosts to connect to local forwarded ports.