opening doors - nat
I have a be550 router with upnp active. I have problems of nature in the game Call Of Duty. We are 2 players playing on the same network, with 2 different PCs, with fixed IPs. The first player connects, upnp automatically opens the internal and external port 3074, and therefore the first player has open nat. While the first player is playing, the second player starts the game but finds himself nat moderated. The internal port opened is always 3074, but the external one is not taken correctly. In the game the external port is for example 4567 but the be550 opens the 6789. Why? The game uses demonportmapping to open the ports..
the external port changes often, I think based on the matches it finds, while the internal one is always 3074.
port 46137 changes based on the game.. it is not always fixed. the 3074 on the other hand is fixed.
I can have 2 devices with different fixed IPs in the same network that have the same internal port open and a different external port. example device 1 internal port 3074 external port 3074 device 2 internal port 3074 external port 13547. for the second device I had to configure the port manually in port farwarding for now.
therefore it is possible to have 2 identical internal ports on 2 devices with different IP.
the problem is that the tplink with upnp for the second device uses an external port which is not the one needed for the game. Why?
Hi,
If you still doubt that the UPnP feature of your Archer BE550 is correctly mapping the port numbers which it is told to map by your game, then you can use some software (for example the one you can see in the screenshot below) to simulate manually what you think the game is doing and then check whether the port mappings are assigned correctly on the Archer BE550.
