How do you host a Neverwinter Nights 2 multiplayer game?

I have already opened ports on my router and still cant host a game. Already opened ports 5120-5300 and checked firewalls on my computer. Everytime someone tries to join says, Timed Out. If you know how to host a game Neverwinter Nights 2 please help me out.How do you host a Neverwinter Nights 2 multiplayer game?Very useful question, i don't know. But it is a very wonderful game.