Netgear MBM621 User Manual download pdf (Page 27)

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v1.0, September 2007

Chapter 3 Advanced Settings

Advanced Settings include Port Forwarding, Port Triggering, WAN Setup, LAN IP Setup, Static

Routes, and Remote Management.

Port Forwarding

With port forwarding, you can make local computers or servers available to the Internet for

different services. For example, FTP uses TCP ports 20 and 21. The selections on this screen are:

• Active Forwarding Rules: This table displays a list of ports that are currently forwarded.

• Choose Predefined Service: Select a predefined service from the pull-down menu.

• Add Custom Rules: You can set up a custom service that is not in the list of predefined

services.

• To access the local computer from the Internet, you must use the WAN address of your

modem, which can be found on the Basic Settings screen or the Modem Status screen.

Because the modem or your router 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 modem to

direct inbound traffic for a particular service to one local server based on the destination port

number. This is known as Port Forwarding.

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.

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Netgear MBM621 User Manual Page 27