Netgear JNR3210 — настройка маршрутизатора: Портовое перенаправление и доступ [86/122]

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Advanced Settings

N300 Wireless Gigabit Router with USB JNR3210

3. Fill in the Repeater IP Address field. This IP address has to be in the same subnet as the

base station, but different from the LAN IP address of the base station.

4. Click Apply to save your changes.

5. Verify connectivity across the LANs.

A computer on any wireless or wired LAN segment of the 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 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:

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

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

recognized by your router.

Your router provides two features for creating 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 router a message containing the source and destination address and

process information. Before forwarding your message to the remote computer, your 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 and the resulting inbound responses:

1. You open a browser, and your operating system assigns port number 5678 to this

browser session.

2. You 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 router.

Source address. Your computer’s IP address.

Source port number. 5678, which is the browser session.

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

by asking a DNS server.

Destination port number. 80, which is the standard port number for a web server

process.

3. Your 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