Netgear PR2000 User Manual download pdf (Page 88)

Security

Trek N300 Travel Router and Range Extender PR2000

Port Filtering to Block Services

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 players’ moves. When a computer on the Internet sends a

request for service to a server computer, the requested service gets 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 the 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 at www.ietf.org/) and published in RFC1700, “Assigned Numbers.” The

authors of other applications typically choose service numbers for those applications from the

range 1024–65535. Although the Trek already holds a list of many service port numbers, you

are not limited to these choices. You can often find port number information by contacting the

publisher of the application, by asking user groups or newsgroups, or by searching.

You can add and block specific Internet services by computers on your network. This process

is called service blocking or port filtering. To add a service for blocking, first determine which

port number or range of numbers the application uses.

 To block services:

1. Launch your browser from a computer or wireless device that is connected to the Trek.

2. Enter www.routerlogin.net or www.routerlogin.com in the web browser address bar.

The login screen displays.

3. Enter the Trek user name and password.

The user name is admin. The default password is password. The user name and

password are case-sensitive.

4. Click the OK button.

The BASIC Home screen displays.

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 144 145

No comments

Netgear PR2000 User Manual Page 88