ZyXEL Communications P-334WT Informações Técnicas descarregar pdf (Página 146)

Using the Dynamic DNS (DDNS)

● What is 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 Prestige supports currently is

WWW.DYNDNS.ORG where you apply the DNS

from and update the WAN IP to.

● Setup the DDNS

1. Before configuring the DDNS settings in the Prestige, you must register an account from the

DDNS server such as

WWW.DYNDNS.ORG first. After the registration, you have a hostname

for your internal server and a password using to update the IP to the DDNS server.

2. Toggle 'Configure Dynamic DNS' option to 'Yes' and press ENTER for configuring the settings

of the DDNS in menu 1.1.

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ZyXEL Communications P-334WT Informações Técnicas Página 146