Netgear PR2000 - Trek N300 Travel Router and Range Extender 사용자 설명서
Security
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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.
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
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.
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.
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.
password are case-sensitive.
4.
Click the OK button.
The BASIC Home screen displays.