ZyXEL Communications P-2024 Series Support Notes page 13

However, if the web server is located behind the P-2024 which is using a dynamic WAN IP address, a fixed
mapping cannot be stored in the DNS server database since the WAN IP address changes. Thus Dynamic DNS
(DDNS) is used to solve this problem. For example, if you have hosted a web site (say www.zyxel.com) on a
server behind the P-2024 which is assigned a dynamic WAN IP address from the ISP, users can still access the
web site from the WAN when you have set up the DDNS settings. With DDNS, users can always access a web
site regardless of the WAN IP address on the P-2024.
When the ISP assigns the P-2024 a new WAN IP address, the P-2024 sends this information to the DDNS
server which updates the IP-to-DNS mapping. Once the mapping is updated, outside users can still access the
web site hosted on an internal server behind the P-2024.
You must register an account with a DDNS service provider. The DDNS server saves the password-protected
e-mail address with the IP addresses and host names. Queries are serviced based on the e-mail addresses. Thus
you must set the same e-mail address you used for DDNS in the P-2024 SMT menu 1.
Currently, the P-2024 supports
setup procedure.
•
Register an access with
with a hostname for the internal server and a password for the IP address update on the DDNS
server.
•
Configure the DDNS settings on the P-2024. Log into the WEB GUI on the P-2024 and click
Maintenance > System > Dynamic DNS to display the configuration screen as shown.
WWW.DYNDNS.ORG
WWW.DYNDNS.ORG
All contents copyright (c) 2006 ZyXEL Communications Corporation.
P-2024 Support Notes
for the DDNS service. The following describes the
DDNS service provider. You will be provided
13