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Network Camera User's Guide
Appendix H: DDNS Application
1. Preface
If you have a Cable modem, xDSL, ISDN or Dialup, this is a great way to host your own Web
Server, FTP Server, Mail Server, Network Camera or other TCP/IP Service. Get your own
domain like www.yourname.com*, www.yourname.com.tw* etc. (Note:This domain must be
registered with Internic via registration authorities such as Network Solutions, DirectNIC,
Register.com etc). Your domain name's dynamic IP address is automatically tracked by a
DDNS server.
Host your own Web Server, FTP Server, Mail Server, Network Camera and much much
more no matter what your computer's IP address may be and even if you have dialup, DSL or
cable modem internet connection where your computer's IP address changes all the time!!
DDNS service supports all top level domain names including but not limited
to .com, .net, .org, .to, .uk etc.
2. Ethernet Network Environment
Normally, DDNS services is only necessary for the users that could only obtain dynamic IP addresses.
As to the users that could obtain the static valid IP address, they do not usually have to apply the
DDNS service. Before we decide if DDNS is necessary for the users, we have to check what kind of
Ethernet network environment we have to install our Network Camera or IP camera on.
(1) Environment of Fixed Valid IP Network
If users could obtain valid IP addresses, they could save the effort to apply DDNS service.
Because the IP address in this environment is fixed, users could input the IP address or domain
name of demo site directly in the IE browser.
(2) Environment of Dynamic IP Network
If users is under a environment of dynamic IP network (Dial-up ADSL), they have to apply a
domain name in advance. Then apply DDNS service. Finally setup the necessary information
of DDNS and PPPoE of the Network Camera or IP camera in order to let the outside administrator
be able to access through internet.
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