ZyWALL Series CLI Reference Guide
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CHAPTER 21
DDNS
This chapter describes how to configure dynamic DNS (DDNS) services for the Zyxel Device.
21.1 DDNS Overview
DNS maps a domain name to a corresponding IP address and vice versa. Similarly, dynamic DNS maps
a domain name to a dynamic IP address. As a result, anyone can use the domain name to contact you
(in NetMeeting, CU-SeeMe, etc.) or to access your FTP server or Web site, regardless of the current IP
address.
Note: You must have a public WAN IP address to use Dynamic DNS.
Set up a dynamic DNS account with a supported DNS service provider to be able to use Dynamic DNS
services with the Zyxel Device. When registration is complete, the DNS service provider gives you a
password or key. At the time of writing, the Zyxel Device supports the following DNS service providers.
See the listed websites for details about the DNS services offered by each.
Note: Record your DDNS account’s user name, password, and domain name to use to
configure the Zyxel Device.
After, you configure the Zyxel Device, it automatically sends updated IP addresses to the DDNS service
provider, which helps redirect traffic accordingly.
Table 95 Network > DDNS
DDNS SERVICE
PROVIDER
SERVICE TYPES SUPPORTED WEBSITE NOTES
DynDNS Dynamic DNS, Static DNS, and Custom DNS www.dyndns.com)
Dynu Basic, Premium www.dynu.com
No-IP No-IP www.no-ip.com
Peanut Hull Peanut Hull www.oray.cn Chinese website
3322 DynamicDNS, StaticDNS www.3322.org Chinese website
Selfhost Selfhost selfhoost.de German website
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