Ddns - Corega COR-WLBAR-AA User Manual

4-7 Dynamic DNS (DDNS)
"DDNS" is an acronym for Dynamic Domain Name Service. Whenever you set up the web servers, mail servers, or sometimes ftp servers, you need "Domain Name" to
help internet users reach your servers easily.
The internet actually runs on IP Addresses which are in numerical order, for example "66.37.215.53". These IP Addresses identify the location of each device connected to
the internet. However, the human brain does not easily remember this numbering system, so a system that allocates domain name such as "www.dyndns.org" provides an
easier method. If you type "66.37.215.53" or "www.dyndns.org" in the web browser's address bar, the browser will show the same web page. This is because both methods
relate to the same web server. The "Domain Name Servers" used to manage the internet will translate "www.dyndns.org" into the IP Address "66.37.215.53" in order to
allow your browser to find the web server and display the correct web page in your browser. If your "WAN Connection Type", as shown in One Page Setup section, is
"Obtain IP Address Automatically", "PPPoE", or "PPTP" with dynamic IP address assigned by ISP, it will cause an error when you set up the public computer servers in your
LAN side PCs. Internet users may not be able to reach your servers because your WAN side IP address may change each time you initiate the connection to your ISP. The
DDNS function will help to map your IP address to your domain name when your ISP assigns a new dynamic IP Address. Note that this DDNS function acts as the client
appliance of DDNS service and is only able to be used in conjunction with the service provided by DynDNS.org. Before you begin using this function, you will need to apply
to DynDNS.org to be able to use the service. Please visit www.dyndns.org for further information.
Figure 21. DDNS Settings
• DDNS Service: Check the "Enable" option if you wish to activate this function.
• Service Provider: This is the URL of the company that will provide the DDNS Service. Presently, this is set for www.DynDNS.org
• Host Name: DynDNS.org, will provide you with a Host Name. Enter this name in the "Host Name" field.
• Username: After you have applied for the DDNS service from DynDNS.org, you will be issued with a Username. Enter this username in the "Username" field.
• Password: DynDNS.org, will also issue you with a password. Enter the detail in the "Password" field.
Click the "Save" button after making any changes, or click the "Cancel" button to exit the screen without saving any changes.
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