N150 Wireless ADSL2+ Modem Router DGN1000
• To allow access from a single IP address on the Internet, select Only This Computer and enter the IP address that is allowed access.
• To allow access from a range of IP addresses on the Internet, select IP Address and enter a beginning and ending IP address to define the allowed range.
• To allow access from any IP address on the Internet, select Everyone.
4. Specify the port number to be used for accessing the router interface.
Web browser access usually uses the standard HTTP service port 80. For greater security, you can change it so the remote router interface uses a custom port by entering that number in the field provided. Choose a number between 1024 and 65535, but do not use the number of any common service port. The default is 8080, which is a common alternate for HTTP.
5. Click Apply to save your changes.
To access your wireless modem router from the Internet, type your wireless modem router’s WAN IP address in your browser’s Address field, followed by a colon (:) and the custom port number. For example, if your external address is 134.177.0.123 at port number 8080, enter the following in your browser: http://134.177.0.123:8080
Note: The http:// is required in the address.
Static Routes
Static routes provide additional routing information to your router. Under normal circumstances, the router has adequate routing information after it has been configured for
Internet access, and you do not need to configure additional static routes. Only configure static routes for unusual cases such when you have multiple routers or multiple IP subnets on your network.
Static Route Example
As an example of when a static route is needed, consider the following case:
• Your primary Internet access is through a cable modem to an ISP.
• You have an ISDN router on your home network for connecting to the company where you are employed. This router’s address on your LAN is 192.168.0.100.
• Your company’s network address is 134.177.0.0.
When you first configured your router, two implicit static routes were created. A default route was created with your ISP as the wireless modem router, and a second static route was created to your local network for all 192.168.0.x addresses. With this configuration, if you attempt to access a device on the 134.177.0.0 network, your router forwards your request to
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N150 Wireless ADSL2+ Modem Router DGN1000 the ISP. The ISP forwards your request to the company where you are employed, and the request is likely to be denied by the company’s firewall.
In this case you have to define a static route, telling your router that 134.177.0.0 should be accessed through the ISDN router at 192.168.0.100. The static route setup would look like
Figure 16, Add static routes .
In this example:
• The Destination IP Address and IP Subnet Mask fields specify that this static route applies to all 134.177.x.x addresses.
• The Gateway IP Address field specifies that all traffic for these addresses are to be forwarded to the ISDN router at 192.168.0.100.
• The value in the Metric field represents the number of routers between your network and the destination. This is a direct connection, so it can be set to the minimum value of 2.
• The Private check box is selected only as a precautionary security measure in case RIP is activated.
Configure Static Routes
To configure static routes:
1. Select Advanced > Static Routes to display the following screen.
Figure 15. View additional routing information
2. To add a static route:
a. Click Add to open the following screen.
Figure 16. Add static routes
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