A way to play online (Neverwinter Nights)

First of all, make sure that you have different cd keys (with which it starts up when you press a network game) and one version of the game (at the time of writing, the license has version 86.8193.34.1 [b8d939f8]. If you are creating a game via the Internet, make sure that the host (who creates a game) the port is open. The game will not appear in the general list of servers immediately, it will be faster to connect directly (ip can be found on the site www.2ip.ru) when creating the game, specify a port other than 5121. The licensed copy of Steam is not tied to the service and you can run on a computer even without steam). Through the firewall (which must be enabled) block UDP port 5121 (by default, enter another if yours is different, blocking is needed to prevent your cd key from being checked (hangs for about 10 seconds, but connects), you can also allow port 5121 (ports are blocked by default), but already via TCP (your game will be visible on the Internet in the general list of players). Works even if one of the players has a license. Another way is to block the master server through the host on 127.0.0.1 (the current one was not calculated, blocking the old one from bioware (master.bioware.com, nwmaster.bioware.com) does not work).
This method will allow you to save directly in the game (who is the server) (quick / regular saves), and also load without using a crooked server that does not ask for a cd key. To play in a real local network, you can turn off Internet access or block port 5121 (UDP) through the firewall. For a virtual machine, it is enough to block port 5121 (UDP) through the firewall.
If, when connecting to your server, the second player says that the server cannot verify your password, then in the settings.tml file along the path c:UsersUserDocumentsNeverwinter Nights find the parameter mode = "always" to mode = " if-reachable" in [masterserver]