Xbox doublenap how to enter port numbers in this page provided to me from my provider

Look up the default IP of the router you have, the one from your internet provider or a third party one may have bought, and enter that address in your browser. It will bring you to a login page. You can also look up the default credentials most of the time (I recommend changing the password to something more secure but that's up to you.) Usually there will be an "advanced options" tab or something similar and there you can find "Port Forwarding" and then enter the suggested port numbers with the correct protocol type (UDP, TCP, or Both.)

The Port Numbers that are listed here don't really make sense.... There are only three areas that port numbers can be placed in and only a max of 5 'characters', that includes a coma, that can be entered in the space provided. There is the Global Port Range
{00000 - 00000} and then the Base Host Port {00000}. After this is done is there a reason to delete it all after words? or is this just something to know in the future?

Thank you for your reply.

I also tried this page, but when I enter the serial number (which is 14 digits right ?) it says :

"The product type does not match with the serial number provided." (I selected XBOX as the Product Family Type)

Hey Beefy.

If this still doesn't allow you to connect with your friends, you could be under a 'double-NAT' scenerio. This is where your NAT problem is coming from both the router your xbox is connected to (the belkin in this case) but there is also a second router
in the picture, namely your modem. Most DSL companies provide router/modem combination units, though some cable providers also do too. This is why we asked for your modem's make/model number too.

If you still can't connect to friends, we now need to port forward from your modem/router to your belkin router also. To find the login information for the modem, it might be written on it, or you can find it in the Belkin's home page, It will be just under
the WAN IP address, usually called the WAN gateway, or just gateway. If that number starts with 192.168 or 10.0 your modem is also a router. Enter that IP address into your browsers address bar, find the port forwarding page, then forward the same ports to
the WAN IP address you found on the belkin home page.

Best of luck.

Hello

You may find information how to open ports on your router at the Port Forward website. Go to the Port
Forwarding Guides for Xbox LIVE 360 page to find instructions for your router.

If your router is not listed on the Port Forward website, contact your Internet service provider or router manufacturer for help with opening network ports.

For more help with opening network ports, contact whoever provides support for your router, such as your Internet service provider or router manufacturer.