Win7 System query open port number method

In the Windows system, port number is the system and the external communication of the export, so the ports in the system is extremely important, usually we install the system, will not be all changes to the port, but if you have a large number of important files stored in the computer, and at the same time face the threat of hackers, So how do you know the port number that is open on the Win7 system if you turn off the not-winning port number to make your computer more secure? The following small series for everyone to bring the query Win7 port number of methods, I hope to help you!

Win7 System query open port number method

1, open the running window, enter cmd click OK.

2, in the pop-up Command Prompt window input Netstat-na, then you can see the port number information.

Through the above simple operation we can quickly see the open port number, in fact, the way is to use the cmd command line to view, interested users may wish to try!