Chapter 11 Ddns; Ddns Overview; What You Can Do In This Chapter; What You Need To Know - ZyXEL Communications ZyWall USG20-VPN User Manual

11.1 DDNS Overview

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

11.1.1 What You Can Do in this Chapter

• Use the DDNS screen (see
domain names and their details.
• Use the DDNS Add/Edit screen (see
USG or to edit the configuration of an existing domain name.

11.1.2 What You Need to Know

DNS maps a domain name to a corresponding IP address and vice versa. Similarly, Dynamic DNS
(DDNS) 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 (dynamic) IP address.
Note: You must have a public WAN IP address to use Dynamic DNS.
You must set up a dynamic DNS account with a supported DNS service provider before you can use
Dynamic DNS services with the USG. When registration is complete, the DNS service provider gives
you a password or key. At the time of writing, the USG supports the following DNS service
providers. See the listed websites for details about the DNS services offered by each.
Table 101 DDNS Service Providers
PROVIDER
DynDNS
Dynu
No-IP
Peanut Hull
3322
Selfhost
Note: Record your DDNS account's user name, password, and domain name to use to
configure the USG.
After you configure the USG, it automatically sends updated IP addresses to the DDNS service
provider, which helps redirect traffic accordingly.
C
Section 11.2 on page
Section 11.2.1 on page
SERVICE TYPES SUPPORTED
Dynamic DNS, Static DNS, and Custom DNS
Basic, Premium
No-IP
Peanut Hull
3322 Dynamic DNS, 3322 Static DNS
Selfhost
USG20(W)-VPN Series User's Guide
250
HAPTER
251) to view a list of the configured DDNS
252) to add a domain name to the
WEBSITE
www.dyndns.com
www.dynu.com
www.no-ip.com
www.oray.cn
www.3322.org
selfhost.de
11
DDNS