You must have DUKE3D.GRP from
Duke Nukem 3D: Atomic Edition
The config files use minimal keybinds
|Quick Kick||Q||Cycle inventory||wheel|
There are two options for playing multiplayer games
|Source Port||Connection Type||Difficulty||Requires|
|EDuke32||Master/Slave||Easy||Host to open ports|
|xDuke||Peer-2-Peer||Hard||Everyone to open ports|
|Program Name||Port Number||Protocol|
Access your router's hub, information should be on your router.
You need the ip address (i.e 192.168.0.1) and login account.
Go to the address and login.
Once you're logged in, look for 'port forwarding'
(in my case, it's under advanced settings > security)
Type in the port number, your local IP address and select (UDP or TCP).
Make sure to apply the changes you make.
Click here and follow the instructions