A great tutorial Master Chef however when even followed religiously to every single character it still does not resolve my strict NAT settings! Since i have a NAt modem and a NAT router i have applied all the instructions to both machines. The modem is the Siemens SpeedStream-4200 and the router is the D-Link DIR-320. However to clear some space i have successfully made my xbox's IP static and had it connect right through to the wide world of internet. though after that, that's when things start to get hay-wire. My first approach was to do the forward ports and put in ports 53,80,88,1863 and 3074 (1863 was recommended by PortForward.com) to both the modem and router. i turned off UPnP and started the xbox live network connection test. however it said that my NAT settings was still strict! So then i endeavored to turn on DMZ MAKING sure i first turned off the forward ports as they "cancel each other out" redid the test and the same strict result came out. Oh and mind you before i i made the xbox's IP static the modem and router allready had UPnP enabled so that is another reason why i turned UPnP off and did not try that method in the first place. on this setting my NAT setting was moderate BUT NOT OPEN >:( Now i am absolutely clueless as what to do now as iv been trying to fix this NAT issue for well over 12 hours now (no joke)and this absolutely phenomenally huge reply is my last attempt on defeating NAT FOREVER! btw i'd be amazed if anyone actually read this entire reply :O