Netgear 09400126 ユーザーズマニュアル

5-8

Customizing Your Network

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TCP. Select TCP only.

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UDP. Select UDP only.

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Both. Select both TCP and UDP.

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Local IP Address. Enter the local IP address for the computer that is using the service.

5. Perform one of the following actions:

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Click Add to save your settings. The Active Filters table now displays the list of ports that 
are currently forwarded.

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To delete a service, select the radio button in the Active Filters table for the service that 
you want to delete, and then click Delete.

A firewall has two default rules, one for inbound traffic (WAN to LAN) and one for outbound 
traffic. Port forwarding affects the inbound rules. These rules restrict access from outsiders. The 
default rule is to block all access from outside except responses to requests from the LAN side. 
You can use port forwarding to add predefined or custom rules to specify exceptions to the default 
rule.

Because the gateway 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) or computer visible and available to the Internet. The rule tells the gateway to direct 
inbound traffic for a particular service to one local server or computer based on the destination port 
number. This is also known as port forwarding.

To configure port forwarding and services for specific inbound traffic:

Note: To reset the selection in the Services pull-down menu and to clear all the fields 

in the Add Custom Rules table, click Reset.

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.