Ok I need some help with this.

I am trying to get an SSH server running on my box from behind a NAT firewall. So far I have been able to successfully test it on loopback. So I know the server is working. I can also see incoming packets to the server if I connect with my external address.

The problem is that the SSH client uses a dynamic, registered source port. So when my SSH server sends a SYN,ACK packet back to the SSH client I am running, it is sending it to the same a registered port, which the NAT firewall is not forwarding to my computer. I could set the firewall up to forward these ports, but the source port that the SSH client uses changes every time you run it.

So what I am looking for is a method to tell the SSH client exactly which source port I want to initiate the connection from so I can set the firewall up to forward it.

I am running openssh 3.7 on Slackware 9.1, kernel version 2.4.22.

Any ideas?