Chapter 16 Ddns; About Ddns; Dyndns Wildcard; Configuring Ddns - ZyXEL Communications G-4100 V2 User Manual

This chapter shows you how to set the ZyXEL Device to use DDNS.

16.1 About DDNS

DDNS (Dynamic Domain Name System) allows you to update your dynamic IP address with
one or many dynamic DNS services so that anyone can contact you (in NetMeeting, CU-
SeeMe or other services). This is for cases where the ISP gives the ZyXEL Device a dynamic
IP address but you still want to use a domain name. You can also access your FTP server or
Web site on your own computer using a domain name (for example, myhost.dhs.org, where
myhost is a name of your choice), which will never change instead of using an IP address that
changes each time you reconnect.
Note: You must go to the Dynamic DNS service provider's website and register a user
account and a domain name before you can use the Dynamic DNS service with
your ZyXEL Device.
The Dynamic DNS service provider will give you a password or key.
Note: If you have a private WAN IP address, then you cannot use Dynamic DNS.

16.1.1 DYNDNS Wildcard

Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the
same IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use,
for example, www.yourhost.dyndns.org and still reach your hostname.

16.2 Configuring DDNS

Click ADVANCED > DDNS to display the screen as shown next.

Chapter 16 DDNS

C
H A P T E R
G-4100 v2 User's Guide
1 6
DDNS
143