Thank you for your feedback.
The router will not need any additional setup (No portforwarding needed), to allow communication from your games console:XBOX or XBOX360 to the XBOX Live! online service.
If possible, try your setup both wired and wireless, using thelatest firmware for your router/gateway.
These products have been successfully tested with XBOX andXBOX360.
Microsoft has put together a compatibility list, includingD-Link products