Solwise Ltd., www.solwise.co.uk, sales@solwise.co.uk
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The Internet uses DNS servers to lookup domain names and translates them into IP
addresses. Domain names, such as C1060-id.vipcam.cn, are just easy to remember
aliases for IP addresses. A dynamic DNS service is unique because it provides a
means of updating your IP address so that your listing will remain current when your IP
address changes. There are several excellent DDNS services available on the Internet
and best of all most are free to use. Two such services you can use are www.3322.org
and www.vipcam.cn. You’ll need to register with the service and set up the domain name
of your choice to begin using it. Please refer to the home page of the service for detailed
instructions.
A DDNS service works by uploading your WAN IP address to its servers periodically.
Your gateway-router may support DDNS directly, in which case you can enter your
DDNS account information into your router and it will update the DDNS servers
automatically when your IP address changes. Please consult your router’s
documentation for more information. If your router does not support DDNS, you can
setup the IP Camera’s DDNS client.
6.7 Configuration Example
At home or business LAN, one or more computers and IP Cameras are connected to the
same IP Sharing Device(Gateway/Router), IP Sharing Device was assigned a public IP
Address by ISP(e.g. 211.75.91.24
), while each devices in LAN has assigned a different
LAN IP(e.g. 192.168.0.151/192.168.0.10/192.168.0.11).
Figure 41 Typical Network Environment
Now, every LAN devices connect to INTERNET via NAT function provided by IP Sharing
Device. However, from the point of remote PC’s view, remote PC see only an IP Sharing
IP Sharing Device
Public: 211.75.91.24
Privacy:192.168.0.1
PC1
192.168.0.10
IPCamera
192.168.0.151
PC2
192.168.0.11
INTERNET
Remote PC
xDSL Modem
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