Instructions
Open your web browser, type "192.168.0.1" into the address bar, and then enter your user name and password to log in to your D-Link router's configuration utility.
Open the "Advanced" tab and click on "Firewall Settings" in the navigation pane.
Select "Endpoint Independent" next to the "UDP Endpoint Filtering" and "TCP Endpoint Filtering" options in the "NAT Endpoint Filtering" section of the page. Click "Apply."
Click on "Advanced Network" in the navigation pane and check the "Enable UPnP" check box. Click "Apply" to save your settings. Your D-Link router has now been configured for Xbox Live.