User's Manual

NBG-417N User’s Guide 121
CHAPTER 12
Dynamic DNS
12.1 Overview
Dynamic DNS (DDNS) services let you use a domain name with a dynamic IP address.
12.2 What You Can Do
Use the Dynamic DNS screen (Section 12.4 on page 122) to enable DDNS and configure the DDNS
settings on the NBG-417N.
12.3 What You Need To Know
Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic
DNS services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access
your FTP server or Web site on your own computer using a domain name (for instance
myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an
IP address that changes each time you reconnect. Your friends or relatives will always be able to
call you even if they don't know your IP address.
12.3.1 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.
Note: If you have a private WAN IP address, then you cannot use Dynamic DNS. You
must have a public WAN IP address.