ZyXEL Communications P-791R V2 Support Notes page 47

Without DDNS, we always tell the users to use the WAN IP of the P-791R v2 to
access the internal server. It is inconvenient for the users if this IP is dynamic.
With DDNS supported by the P-791R v2, 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 P-791R v2.
When the ISP assigns the P-791R v2 a new IP, the P-791R v2 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-791R v2supports 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-791R v2, 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:
All contents copyright © 2007 ZyXEL Communications Corporation.
P-791R v2 Support Notes
47