I am curious if Xbox one is using different ports than the 360, per MS support these are the ports the Xbone is using.
Xbox Live requires the following ports to be open:
Port 88 (UDP)Port 3074 (UDP and TCP)
- Main gaming port.
Port 53 (UDP and TCP)
Port 80 (TCP)
Port 500 (UDP)
UDP Port 3544 (UDP)
UDP Port 4500 (UDP)
So I pulled up my internet sessions while playing online. My Xbone is using port 3075 as the main gaming port instead of port 3074. Here is a screen shot, the IP address outlined in red are MS hosting, cloud server, and Demonware (stat tracking). Anyway what I find interesting, that all the ports associated with MS or cloud is using port 3074 however all the other Xbone players are mostly using port 3075, same as me with a couple of other players just using some other random port. I am sure the reason why the Xbone is using port 3075 for most user is because they also own 360's which uses port 3074 exclusively.
Anyway, any fellow Xbone players may want to double check their GF rules and port forwarding set up to make sure they are working correctly.
If anyone only owns an Xbone, it would be interesting to see if it is using port only 3074 and not some other port.