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 130) to enable DDNS and configure the DDNS settings on the
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.
