Install and Configure rAthena

Related contents in this section.

Technically, the connection is client access login-server, then login-server connect to char-server, and char-server connect to map-server the place where you will play!
So when configuring servers, just check login-server & char-server is connected by the (bind) IP and port, also with char-server & map-server is connected by the (bind) IP and port.