Xbox 360 router question

[claygast]

Hey guys I don't know if this is the place to seek help for an Xbox problem, but you guys are pretty smart so I figure I'll shoot:

I've just moved home for the summer from college and so now there are two Xbox 360's in the house on one Belkin Wireless G router (everything's hard wired). We're able to play at the same time for a little while but we'll often get disconnected in the middle of the game, and I figure it has something to do with the TCP/UDP settings. Xbox Live reportedly uses the ports:

TCP 3074
UDP 3074
UDP 88

but I'm only able to forward them to one Xbox at a time. How do I overcome this? Or should I try something completely different? My problem is that when I forward those ports for each Xbox, it says no overlapping allowed. So I'm stuck. Will forwarding it for just one of it be sufficient? Because I can play on one Xbox 360 without forwarding ports at all. I just have these problems when I try to have more than one running from the same router.

 

[TopGun]

I'm not completely sure but I think you can do it like this:

Xbox 360 #1
External:
TCP 3074
UDP 3074
UDP 88
Internal:
TCP 3074
UDP 3074
UDP 88

Xbox 360 #2
External:
TCP 3075
UDP 3075
UDP 89
Internal:
TCP 3074
UDP 3074
UDP 88

Something like that might work, Just having different external ports for each.

 

[MorfiusX]

I've had a ton of problems with getting open NAT on a 360 with various routers. The only ones that I could get working properly on a consistent basis where ones that supported Universal Plug and Play.