The DDNS feature allows you to host a server (Web, FTP, Game
Server, etc...) using a domain name that you have purchased
(www.whateveryournameis.com) with your dynamically assigned IP
address. Most broadband Internet Service Providers assign dynamic
(changing) IP addresses. Using a DDNS service provider, your friends
can enter in your domain name to connect to your game server no
matter what your IP address is.