Prestige 2302RL Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation.
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What is DDNS?
The Dynamic DNS service allows you to map a dynamic IP address to a static hostname, allowing your
computer to be more easily assessable from various locations on the Internet. To use the service, you must first
apply an account from one of the several free DDNS service providers such as
WWW.DYNDNS.ORG
.
Without DDNS, you have to tell your users the WAN IP address of your server for them to access. It is
inconvenient for the users if this IP is dynamic which changes. With DDNS supported on the Prestige, you use a
DNS name (e.g.,
www.zyxel.com.tw
) supplied by the DDNS service provider to your server (e.g., Web server).
Outside users can always access the web server at www.zyxel.com.tw regardless of whether the WAN IP on the
Prestige is dynamic or static.
When the ISP assigns the Prestige a new IP address, the Prestige updates this IP address to the DDNS server 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 easily accessible.
When do I need the DDNS service?
When you want your internal server to be accessible by using DNS name rather than using a dynamic IP
address, use the DDNS service. The DDNS server maps a dynamic IP address to a static hostname. Whenever
the ISP assigns you a new IP address, the Prestige sends this IP address to the DDNS server to update its
IP-DNS table.
What DDNS servers does the Prestige support?
Currently, the Prestige supports
WWW.DYNDNS.ORG
for DDNS service. This is the web site to which you
apply the DNS and update the Prestige WAN IP.
What is DDNS wildcard?
Some DDNS servers support the wildcard feature which allows the *.yourhost.dyndns.org hostname to be
mapped to the same IP address as yourhost.dyndns.org. This feature is useful when there are multiple internal
servers and you want users to be able to use addresses such as www.yourhost.dyndns.org and still reach your
server.
Does the Prestige support DDNS wildcard?
Yes. the Prestige supports DDNS wildcard that
WWW.DynDNS.ORG
supports. To use wildcard, simply enter
yourhost.dyndns.org in the Host field in SMT menu 1.1.