A NAT 3 situation is connecting trough a router and not having the required ports opened or not connected trough the .
If your ISP (Internet Service Provider) is DSL, it’s essential to have your modem bridged. Using the DMZ of the DSL modem with your network router is also not a guaranteed solution. Your ISP should assist in bridging the modem.
When the device is not UPnP enabled, manual port setup is required.
Xbox Live requires ports:
· TCP 80
· UDP 88
· UDP 3074
· TCP 3074
· UDP 53
· TCP 53
· TCP 80
· TCP 443
· TCP 5223
· UDP 3478
· UDP 3479
· UDP 3658 should also be opened for voice chat.
Step 1: Assign your console a Static IP Address on the Network settings. You may chose the IP – 192.168.0.253 / 255.255.255.0 / 192.168.0.1
Step 2: Open a web browser and type the IP address of the wireless router in the address bar (default is 192.168.0.1). Press Enter.
Step 3: Navigate to the Port Forwarding page in the Advanced tab.
Step 4: Enable and name the rule and type in the IP address of the console. Include the ports with commas and dashes when in range. Or you may create additional rules.
Step 5: Click on Save Settings to apply the rule.
Step 6: Run the Network test in your console.
If Port Forwarding fails, set the IP address of the console in the page, but remove the previously configured ports.