Netgear FVS318v3 – Cable/DSL ProSafe VPN Firewall with 8-Port Switch 참조 매뉴얼

Firewall Protection and Content Filtering

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service to a server computer, the requested service is identified by a service or port number. This 
number appears as the destination port number in the transmitted IP packets. For example, a packet 
that is sent with destination port number 80 is an HTTP (Web server) request.

The service numbers for many common protocols are defined by the Internet Engineering Task 
Force (IETF) and published in RFC1700, “Assigned Numbers.” Service numbers for other 
applications are typically chosen from the range 1024 to 65535 by the authors of the application.

Although the FVS318v3 already holds a list of many service port numbers, you are not limited to 
these choices. Use the Services menu to add additional services and applications to the list for use 
in defining firewall rules. The Services menu shows a list of services that you have defined, as 
shown below:

To define a new service, first you must determine which port number or range of numbers is used 
by the application. This information can usually be determined by contacting the publisher of the 
application or from user groups of newsgroups. 

To add a service:

1. When you have the port number information, go the Services menu and click on the Add 

Custom Service button. The Add Services menu appears as shown in 

: