Draytek Vigor2200 Series, User Manual

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4-2
Advanced Setup
This chapter explains the options available in Advanced Setup:
4.1 Dynamic DNS Setup
1. Before You Set Up Dynamic DNS Function
DDNS is short for Dynamic Domain Name System. This function
could give a domain name to the router when it has been connect-
ing to the Internet. Normally, most Internet access users have no
their own domain name. If they want to set up Internet servers
(ex. FTP, Web or Mail server) in the private local network using
Port Redirection function, it's not easy way. Because the WAN IP
address is always changing for every online. DDNS function
makes the router can have one or many Domain Names. When
the router has been connecting to the ISP, other Internet hosts or
routers will be able to use the name(s) to reach or visit it whatever
the WAN IP address is changing.