Thanks but no (again).
Let me explain it more clearly.
I want to be able to access to zeroshell from my lan on ports 80 and 443.
But i want to be able to access it from outside, from whatever ip address i would be using, but on ports 980 and 943.
I add previously an adsl box which allowed me to do that with NAT.
Now, it’s only a gateway, so i can’t do that anymore.
I still have nat on zeroshell to redirect incoming 980 and 943 tcp ports to its web interface (80 and 443).
So i need to block 80 and 443 incoming ports from outside.