I have my PC hardwired to my router and I have a usb to ethernet adapter. I run that ethernet cord to my xbox and I shared my PC connection with the xbox. Sometimes my NAT will change to moderate on te xbox.
How can I open ports on the xbox IP address? I dont think I can do it in my router settings?
The xbox should be connected to the router as well. Opening a port on the Xbox would require running an application or having terminal access on the Xbox itself. Are you trying to open the Xbox port to the public?