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8. Dynamic DNS
Dynamic DNS (DDNS) is mainly used to map fixed domain names to dynamic IP
addresses and vice versa. For a user using a dynamic IP address, after the user obtains a
new IP address when accessing Internet, the dynamic domain name software installed in
the host sends the IP address to the dynamic domain name resolution server provided by
the DDNS service provider and updates the domain name resolution database. When
another user on the Internet tries accessing the domain name, the dynamic domain name
resolution server returns the correct IP address.
Click Dynamic DNS and the Dynamic DNS page appears. In this page, you can configure
the DDNS parameteres.
The following table describes parameters in this page:
Item
Description
User a
Dynamic DNS
Service
Enable this function if you already register to the DDNS service
provider.
Service
Provider
Select a server from the drop-down list. You can select DynDNS.org,
3322.org, freedns.afraid.org, DtDNS.com or www.oray.cn.
Host Name
Enter the host name or domain name provided by the DDNS service
provider.
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User Name
Enter the user name of the DDNS account.
Password
Enter the password of the DDNS account.
After the settings are done, click Apply to save the settings.
9. Static Routing
Static routing is a special type of routing that can be applied properly in a network to
reduce the problem of routing selection and overload of data flow because of routing
selection and to improve the forwarding speed of packets. You can set the destination IP
address, subnet mask and gateway to specify a routing rule. The destination IP address and
subnet mask are used to determine a destination network or host. Then, the router sends
packets to the specified destination network or host through the gateway.
Click Static Routes and the Static Routes page appears. In this page, you can add, edit and
delete a static routing rule, and view the current static routing table in the router.
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Click Add and the following figure appears:
The following table describes parameters of adding a routing rule:
Item
Description
Active
Enable it to apply the routing rule.
Router Name
Enter the name of the static route.
Destination IP
Address
Enter the destination IP address or network that you want to access.
IP Subnet
Mask
Subnet mask of the destination IP address.
Gateway IP
Address
IP address of the router or host to which packets are sent.
Metric
Indicates the number of hops in the user network. Its value range is 2 to
15. Usually, the value of 2 or 3 leads to the best performance. If the
route is direct connection, set the Metric to 2.
After the settings are done, click Apply to save the settings.
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10. Security Options
Click Security Options and the extended navigation menu is shown as follows:
The submenu contains Remote Management and WAN Setup.
10-1 Remote Management
Choose
Security Options > Remote Management
and the Remote Management page
appears.
The remote management function allows you to configure the router’s WAN through the
Web browser. In this way, you can manage the router from a remote host.
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The following table describes parameters in this page:
Item
Description
Turn Remote
Management
On
Enable or disable remote Web management.
Remote
Management
Address
IP address that is used to access the router from the Internet. The default
IP is
When accessing the router, you need to enter
the WAN IP address of the router, along with
:
and the port number in
the address bar (of IE) or the location bar (of Netscape).
Port Number
Specify the port of Web management for accessing the broadband router.
Allow Remote
Access By
Set the IP address of the computer on which remote Web management is
carried out to access the router.
•
Only This Computer: Only the specified IP address can access the
router. You need to enter an IP address.
•
IP Address Range: A number of IP addresses on the Internet can
access the router. You need to enter the starting
and ending IP addresses to specify the range.
•
Everyone: Everyone on the Internet can access the router.
After the settings are done, click Apply to save the settings.
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