OK. Off topic but may be of interest to some. An exercise in port forwarding, if nothing else.
My grandson wanted to play on our home X-box at a remote location using a Windows 10 PC. I found on the Internet a set of port forwarding values that have worked for me. See values in attached screenshot of my router setup. Substitute the IP address of your X-box for the internal IP address. You should set up the X-box to remain turned on when not actively accessed to increase odds of connecting remotely.
Good luck to those who try this.