Using the Dynamic DNS (DDNS)
The DDNS service, an IP Registry provides a public central database where information such as email addresses, hostnames, IPs etc. can be stored and retrieved. This solves the problems if your DNS server uses an IP associated with dynamic IPs.
Without DDNS, we always tell the users to use the WAN IP of the Prestige to access the internal server. It is inconvenient for the users if this IP is dynamic. With DDNS supported by the Prestige, you apply a DNS name (e.g., www.zyxel.com.tw) for your server (e.g., Web server) from a DDNS server. The outside users can always access the web server using the www.zyxel.com.tw regardless of the WAN IP of the Prestige.
When the ISP assigns the Prestige a new IP, the Prestige must inform the DDNS server the change of this IP so that the server can update its IP-to-DNS entry. Once the IP-to-DNS table in the DDNS server is updated, the DNS name for your web server (i.e., www.zyxel.com.tw) is still usable.
The DDNS server stores password-protected email addresses with IPs and hostnames and accepts queries based on email addresses. So, there must be an email entry in the Prestige menu 1.
The DDNS servers the ZyAIR G-4100 supports currently is
www.dydns.org and www.changeip.com
where you apply the DNS from and update the WAN IP to.
Key Settings for using DDNS function:
Option | Description |
Enable DDNS | Check the Active box. |
Service Provider | Enter the DDNS server in this field. Currently, we support www.dydns.org and www.changeip.com. |
Registered Host Name | Enter the hostname you subscribe from the above DDNS server. For example, zyxelsupport.dyndns.org |
Login User | Enter the user name that you registered from the DDNS server. |
Password | Enter the password that you registered from the DDNS server. |
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