Netgear DG834PN 참조 가이드

TM

4-12

Protecting Your Network

Services are functions performed by server computers at the request of client computers. For 
example, Web servers serve Web pages, time servers serve time and date information, and game 
hosts serve data about other players’ moves. When a computer on the Internet sends a request for 
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 DG834PN already holds a list of many service port numbers, you are not limited to 
these choices. Use the procedure below to create your own service definitions.

1. Log in to the ADSL modem wireless router at its default LAN address of http://192.168.0.1 

with its default User Name of admin, default password of password, or using whatever 
Password and LAN address you have chosen for the ADSL modem wireless router.

2. Select the Services link of the Security menu to display the Services menu shown in 

:

•

To create a new Service, click the Add Custom Service button.

•

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

•

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