Netgear DG834v1 – ADSL Modem Router Manual De Referência

4-6

Protecting Your Network

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

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

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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 DG834 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 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:

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.