Dynamic Dns; Chapter 15 Dynamic Dns; Overview; What You Need To Know - ZyXEL Communications NBG-5715 User Manual

15.1 Overview

Dynamic DNS services let you use a domain name with a dynamic IP address.

15.1.1 What You Need To Know

The following terms and concepts may help as you read through this chapter.
What is DDNS?
DDNS, or 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.
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.
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