We are assuming for single server. 1 Login-Server, 1 Char-Server, and 1 Map-Server
Edit this file conf/map_athena.conf, you can open it with text editor. Just change based on the marks. The rest, just you need to know how it works, just read the description.
// Interserver communication passwords, set in account.txt (or equiv.)
userid: s1 //<−−− Put 'myserver'. The username that used in login table
passwd: p1 //<−−− Put 'myserver'. The password that used in login table
// Character Server IP
// The map server connects to the character server using this IP address.
// NOTE: This is useful when you are running behind a firewall or are on
// a machine with multiple interfaces.
//char_ip: 127.0.0.1 //<−−− Just uncomment this, and look at 'conf/char_athena.conf' for char bind_ip
// The map server listens on the interface with this IP address.
// NOTE: This allows you to run multiple servers on multiple interfaces
// while using the same ports for each server.
//bind_ip: 127.0.0.1 //<−−− Just uncomment this, put the IP of your map-server is running
// Character Server Port
char_port: 6121
// Map Server IP
// The IP address which clients will use to connect.
// Set this to what your server's public IP address is.
//map_ip: 127.0.0.1 //<−−− Just uncomment this, put the IP of your map-server is running
// Map Server Port
map_port: 5121