How to turn off a computer's unused port

Computer port Some of the use of skills believe that everyone may have a certain understanding, through the control of each port, you can effectively control the operation of a variety of computer programs, by closing the corresponding port, you can stop the operation of some computer programs.

Each service corresponds to the corresponding port, such as the well-known WWW service port is 80,smtp is 25,ftp is the 21,win2000 installation of the default are these services open. It is really not necessary for individual users to turn off the port, which is to turn off useless services.

Configured in the Services section of Administrative Tools in Control Panel.

1, close 7.9 and so on port: Close Simple TCP/IP service, support the following TCP/IP services: Character generator,daytime, Discard, Echo, and Quote of the day. 2, close 80: Turn off WWW service. The name "World Wideweb Publishing Service" is displayed in the services, which provides WEB connectivity and management through the snap-in of Internet information services.

3. Turn off 25 ports: Turn off the Simple Mail transport Protocol (SMTP) service, which provides the ability to transfer e-mail across the network.

4, turn off 21 ports: Shut down the FTP Publishing service, it provides services through the Internet information Services snap-in to provide FTP connection and management.

5. Turn off the 23 port: Turn off the Telnet service, which allows remote users to log on to the system and run the console program using the command line.

6. It is also important to shut down the server service, which provides RPC support, file, print, and named pipe sharing. Turn it off. Win2K default sharing, such as ipc$, C $, admin$, and so on, this service shutdown does not affect your other operations.

7, another is 139 ports, 139 port is the NetBIOS session port, used for file and print sharing, note that the UNIX machine running Samba is also open 139 ports, the same function. Streamer 2000 used to determine the other host type is not very accurate, it is estimated that the 139-port open both considered NT machine, now good.

Close the 139-port method is to select the Internet Protocol (TCP/IP) attribute in the local area Connection in network and dial-up connections, and enter the Advanced TCP/IP settings wins setting, which has a "Disable TCP/IP NetBIOS" and closes 139 ports on a tick.

For individual users, it can be set to "disabled" in each service property setting to prevent the next restart of the service from restarting and the port opening.

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