Netgear 05300016 ユーザーズマニュアル

TM

5-6

Protecting Your Network

•

To edit an existing rule, select its button on the left side of the table and click Edit.

•

To delete an existing rule, select its button on the left side of the table and click Delete.

•

To move an existing rule to a different position in the table, select its button on the left side 
of the table and click Move. At the script prompt, enter the number of the desired new 
position and click OK.

Because the DG834PN 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 ADSL 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.

Remember that allowing inbound services opens holes in your firewall. Only enable those ports 
that are necessary for your network. Following are two application examples of inbound rules:

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. This rule is shown in 

:

Note: Some residential broadband ISP accounts do not allow you to run any server 
processes (such as a Web or FTP server) from your location. Your ISP may periodically 
check for servers and may 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.