Is it possible to create a game server inside a NAT provider?

Question

Computer networks

My friend and I live in the same house. We have one external IP with him (and it does not change either for him or for me when the router is rebooted). If I create a server in one game, will a friend be able to connect to me if he connects to my local IP inside the NAT provider? I will do port forwarding in my router in advance.

Answer 1

Find out your internal addresses and try to connect. You can see the connection information. Exclude or configure routers and firewalls accordingly.

Answer 2

Depends on the game. If there is a direct connection between the server you created and the clients, and if you can ping your internal address from a friend, then you can.

Answer 3

I will do port forwarding in my router in advance.

Where?)
Look at the trace. To do forwarding - the external IP address must be on your router)
And this is possible - only with a "white" IP.
So, option 3:
1. Or the provider allowed user traffic on the internal network between switches / routers (it's easier to call and ask how to set it up).
2. Or one of you needs to buy a "white" IP and raise a game server with port forwarding to a "white" external IP address (or it's easier to set up a VPN server right away).
3. Or use external VPN services such as Hamachi (up to 5 PCs - free).

Answer 4

And what, in fact, did not please you 2ip.ru?