12

DDNS

12.1 DDNS Overview

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

12.1.1What You Can Do in this Chapter

•Use the DDNS screen (see Section 12.2 on page 216) to view a list of the configured DDNS domain names and their details.

•Use the DDNS Add/Edit screen (see Section 12.2.1 on page 217) to add a domain name to the ZyWALL or to edit the configuration of an existing domain name.

12.1.2What You Need to Know

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.

You must set up a dynamic DNS account with a supported DNS service provider before you can use Dynamic DNS services with the ZyWALL. When registration is complete, the DNS service provider gives you a password or key. At the time of writing, the ZyWALL supports the following DNS service providers. See the listed websites for details about the DNS services offered by each.

Table 80 DDNS Service Providers

PROVIDERSERVICE TYPES SUPPORTEDWEBSITE

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

 

 

 

3322

3322 Dynamic DNS, 3322 Static DNS

www.3322.org

 

 

 

Note: Record your DDNS account’s user name, password, and domain name to use to configure the ZyWALL.

After, you configure the ZyWALL, it automatically sends updated IP addresses to the DDNS service provider, which helps redirect traffic accordingly.

 

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