Xbox port forwarding on 2 Xbox’s?

I have found 2 different articles about port forwarding and Xbox 360. One is the Xbox 360 have ports forwarded for just Xbox 360, and another to have ports forwarded for the game specific (i.e.Modern Warfare 2). Is there such a thing as having too many ports
forwarded? The value range with the above mentioned articles overlap on some of the port numbers.

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello BunnySaurus, if you have two consoles at home and they are not being able to access the internet may be for two reasons that are connected, the first is the NAT of your home network that is not open, and then the port that Xbox uses for you to connect to servers.

On Xbox it is selected as automatic being the most used Port 3074 port, if your modem/router is not doing the correct NAT this will give conflict between the two consoles.

Network ports used by the Xbox network on the Xbox console

https://support.xbox.com/en-us/help/hardware-ne...

Troubleshoot NAT errors and multiplayer game issues

https://support.xbox.com/en-us/help/hardware-ne...

I see

Well if I were you I would write down any settings your want to save like your wireless network name/ssid and other things like that including your ADSL settings including username/password

Also save a copy of the router config to a file if you have an option to do so

Then do a factory reset of the router so its back to the settings it had when it came out of the box, then get it setup to connect to the internet again and then port forward the Xbox ports again first before you set-up anything else

These are the ports I have opened and every time I try to port forward 3074 it says the same error.

Yeah. That was my last option. I'll let you know if it worked and I'll hit 5 stars and hit yes as the answer to my question.