Hi
it is possible only specific port on nat translation? my current setup now wan port ether1) doing nat so all translation goes on this port.
thanks
Maybe I’m misunderstanding your question, but what you are asking for is pretty much exactly what masquerading (or SNAT) would do.
Obviously it all depends on your routing and your other firewall rules, but assuming you only have one upstream route going out via a specific interface, all you have to do is enable SNAT or masquerading for outgoing traffic on that interface.