L2J Server

It is possible in one pc with only one ip to put 2 difrent servers running.
I mean for example
I put 1 server low rates running but i also want to put a high rates one using the same login. And using difrent databases
This is in one pc at home.
I already search the forum but cant find this..

use different port on the other one and no problem

So i just need to change the ports from the gameserver ?

GS1 Port: 7777
GS2 Port: 7778

works thanks alot