How to open ports for multiple ips

[PatchMasters]

Hello,

i have 3 xbox 360s in the house and im having nat trouble with them, i am currently using an actiontec pk5000, from centrylink. i need to know if there is a way to open all ports on this router or if i should get a router/switch that i can open the ports on and use dmz on the actiontec for the new router to make this work. any help is appreciated.

 

[eibgrad]

Unless you have 3 public IPs, you're only going to be able to use ONE xbox over the internet. The problem is that all require the same external ports, and as far as I know, you can’t change them. And since your router is only able to map one external port to one internal IP address, that means the other two xbox's are, as they say, up the creek.

That's just one of the limitations in using NAT routers.

 

[Catsrules]

You can use port range triggering if your router supports it
explained in the first answer here
http://en.kioskea.net/forum/affich-32140-i-cant-play-online-with-2-xbox-360-why