Netgear DGND4000 User Manual download pdf (Page 111)

Advanced Settings

111

N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000

4. Click Apply to save your changes.

5. V

erify connectivity across the LANs.

A computer on any wireless or wired LAN segment of

the wireless modem router should

be able to connect to the Internet or share files and printers with any other wireless or

wired computer or server connected to the other access point.

Port Forwarding and Triggering

By default, the wireless modem router blocks inbound traffic from the Internet to your

computers except replies to your outbound traffic. You might need to create exceptions to this

rule for these purposes:

• T

o allow remote computers on the Internet to access a server on your local network.

• T

o allow certain applications and games to work correctly when their replies are not

recognized by your wireless modem router.

Your wireless modem router provides two features for creatin

g these exceptions: port

forwarding and port triggering. The next sections provide background information to help you

understand how port forwarding and port triggering work, and the differences between the

two.

Remote Computer Access Basics

When a computer on your network needs to access a computer on the Internet, your

computer sends your wireless modem router a message containing the source and

destination address and process information. Before forwarding your message to the remote

computer, your wireless modem router has to modify the source information and create and

track the communication session so that replies can be routed back to your computer.

Here is an example of normal outbound traffic an

d the resulting inbound responses:

1. Y

ou open a browser, and your operating system assigns port number 5678 to this

browser session.

2. Y

ou type http://www.example.com into the URL field, and your computer creates a web page

request message with the following address and port information. The request message is

sent to your wireless modem router.

Source address. Y

our computer’s IP address.

Source port number. 5678,

which is the browser session.

Destination address. T

he IP address of www.example.com, which your computer finds

by asking a DNS server.

Destination port number. 8

0, which is the standard port number for a web server

process.

3. Y

our wireless modem router creates an entry in its internal session table describing this

communication session between your computer and the web server at www.example.com.

Before sending the web page request message to www.example.com, your wireless

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 159 160

Comments to this Manuals

No comments

Netgear DGND4000 User Manual Page 111

Comments to this Manuals

Related products and manuals for Routers Netgear DGND4000