ZyXEL Communications ADSL2+ 4-port Security Gateway Support Notes page 65

When the ISP assigns the P-662H-D a new IP, the P-662H-D 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 servers the P-662H-D 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 P-662H-D, 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. Login Web Configurator, Advanced Setup, Advanced -> Dynamic DNS
Select 'Active Dynamic DNS' option:
Key Settings:
Option
Service Provider
Active
Host Name
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Description
Enter the DDNS server in this field. Currently, we support
WWW.DYNDNS.ORG.
Toggle to 'Yes'.
Enter the hostname you subscribe from the above DDNS server.
For example, zyxel.com.tw.
P-662H-D Series Support Notes
64