Inbound Rules (Port Forwarding) - NETGEAR DGN1000-100NAS User Manual

Inbound Rules (Port Forwarding)

Because the wireless modem router uses Network Address Translation (NAT), your network
presents only one IP address to the Internet, and outside users cannot directly address any
of your local computers. However, by defining an inbound rule you can make a local server
(for example, a Web server or game server) visible and available to the Internet.
The rule tells the wireless modem router to direct inbound traffic for a particular service to one
local server based on the destination port number. This is also known as port forwarding.
Allowing inbound services opens holes in your firewall. Enable only those ports that are
necessary for your network. The following are two examples of inbound rules.
Some residential broadband ISP accounts do not let you run server
Note:
processes (such as a Web or FTP server) from your location. Your
ISP might periodically check for servers and suspend your account if
it discovers any active services at your location. If you are unsure,
refer to the acceptable use policy of your ISP.
Inbound Rule Example: A Local Public Web Server
If you host a public Web server on your local network, you can define a rule to allow inbound
Web (HTTP) requests from any outside IP address to the IP address of your Web server at
any time of day, as shown here and described in the following figure:
Figure 26. Allow inbound Web requests
48 | Chapter 4. Security Settings
N150 Wireless ADSL2+ Modem Router DGN1000 User Manual