[quote name='ajh2298']Ok, I found the router set-up page, but it seems I only have one IP address for my whole network(1 PC 3 consoles). When I go to the DMZ section for my router set-up page it shows my static IP which is already filled in, and also the IP that I want out of the DMZ. Do I just enter my IP address in there or do I need to enter something else. And if I do enter just my regular IP address in that box that means my whole network will be out of the DMZ, will that cause any security problem for my PC?[/QUOTE]
Ok. Your description is somewhat confusing so I will try to illustrate how home networks work before I delve into exactly what you need to find out before you configure your 360 to sit on the DMZ.
All home networks look something like the diagram above. The reason people use a router is simple, internet sharing. Consumer ISPs typically assign only one IP address per household which makes it impossible to have more than one device connected at a time.
Enter your router. Your router assumes ownership of this single IP address given to you by your ISP and is now your Internet Traffic Cop. This allows you to "SHARE" the internet connection with multiple devices. The key to all this is HOW a router shares the connection.
Every computer that connects to the internet
MUST have
ITS OWN IP address. Since the router has assumed control of the true IP address, the router must then employ its own IP address database in order to share the connection within your home LAN. This process is known as Network Address Translation (NAT).
Ok, now that I've gone through all of that, here's what you need to do.
Your Xbox will have its own IP address. This IP address will be listed in your router's web interface under one of these headings, NAT, DHCP, or LAN. Also, you should be able to find out the IP address of your 360 from within the Dashboard Network Interface Options menu.
Note: Your 360's IP address WILL be unique. If the address you have found is not unique to the 360, then you have the wrong address.
Once you have the correct IP address, input the address into the DMZ setting on your router and save the change. Allow a few minutes for the change to propagate just in case. It took my setup about 5 minutes before I noticed a substancial increase in download speeds.
Does that clear things up a bit?