When using a LAN, we often find some inexplicable ports opened in the system, which brings security risks to the system. Some friends will use third-party tools to check who is using the port-specific program, but in fact we don't have to be so familiar with it, because Windows already has this built-in function, let's take a look!
View port opening status
If you have some experience with network management, you will know what ports are currently open to the system by using the Netstat command, but do you know? If the "-o" parameter is added while using the Netstat command, we can further understand the port's associated process identifier (PID, that is to say, this PID can be used to determine which process (Program) is using a specific port.
1 view port
Activate process PID
Now that you know that there is a process with a PID of 628 in the system, let's see who it is. As you all know, you can view system processes by pressing the Ctrl + Alt + Delete key combination at the same time, in the "process" tab of "Windows Task Manager. However, by default, there is no PID in the process tab, so we cannot know what the PID is for the process. Therefore, you must first activate the PID display status of the process. The method is as follows:
Click the "Select column" menu item under "View" in the "Windows Task Manager" window, and then click the "PID" check box.
2. Select the process PID.
Later, the PID is displayed in the "process" tab of the "Windows Task Manager" window, next, you only need to find the process whose PID is 628 in the ascending order, and then you can find out who the "behind-the-scenes program" is.