11

DDNS

This chapter describes how to configure dynamic DNS (DDNS) services for the ZyWALL.

11.1 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 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 56 Network > DDNS

DDNS SERVICE

SERVICE TYPES SUPPORTED

WEBSITE

NOTES

PROVIDER

 

 

 

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

 

 

 

 

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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ZyWALL (ZLD) CLI Reference Guide