I have a strict NAT type out of nowhere and these options I've never seen before have me choose a port on the One X. Is there anymore information on this or how to do it.
Make sure you have UPnP checked on your router. Typically the port for Xbox is 3074 I think, but the new service allows that to be changed Incase you have more than one Xbox on your network (like me) to avoid port or NAT issues.
If UPnP is activated already then go to advanced network xbox tab and then click MAC address. You will see something that says reset Mac address or clear Mac address or something similar. Click clear or reset, and it will ask to restart your Xbox. Click yes and then recheck your NAT when your Xbox comes back up