Turn off useless ports under Win2000

        Regarding the method of closing the useless port under win2000, I mentioned it in the previous post and the shared folder security I wrote yesterday. Here I write as the basis of the safety knowledge I wrote for you: Each service corresponds to the corresponding port, such as the well-known WWW service port is 80, smtp is 25, ftp is 21, win2000 installation default These services are all open. It is really unnecessary for individual users. Turning off the port means turning off useless services. “Control Panel" Administrative Tools""Service” in the configuration. 1. Close port 7.9, etc.: Close Simple TCP/IP Service supports the following TCP/IP services: Character Generator Daytime Discard Echo and Quote of the Day. 2. Turn off port 80: Turn off the WWW service. The name ""World Wide Web Publishing Service" is displayed in "Services", providing Web connectivity and management through the snap-in of Internet Information Services. 3. Turn off port 25: Turn off the Simple Mail Transport Protocol (SMTP) service, which provides the ability to send email across the network. 4. Turn off port 21: Close the FTP Publishing Service. The service it provides is to provide FTP connection and management through the management unit of the Internet Information Service. 5. Turn off port 23: Turn off the Telnet service, which allows remote users to log in to the system and run the console program using the command line. 6. Another important thing is to turn off the server service, which provides RPC support, file, print, and named pipe sharing. Turning it off turns off Win2k's default share, such as ipc$, c$, admin$, etc. This service shutdown does not affect your shared operations. 7, there is one is 139 port, 139 port is NetBIOS Session port, used for file and print sharing, note that the Unix machine running samba also open 139 port, the same function. In the past, Streamer 2000 was used to judge the host type of the other party is not accurate. It is estimated that the port 139 is open and considered to be an NT machine. Now it is good. To close the 139 listening method, select "Internet Protocol (TCP/IP)" attribute in "Network and Dial-up Connection" in the "Local Area Connection", enter "<quo;Advanced TCP/IP Settings" " WINS "Settings" has a "NETBIOS" for disabling TCP/IP, and ticked off port 139. For individual users, you can set it to “disable” in each service property setting to avoid restarting the service next time, and the port is also open.