The meaning of port, which includes logical port and physical port. Physical ports, as the name implies, are the real visible ports of network devices, such as the ports of home routers, USB interfaces of notebooks, mouse interfaces and so on. The ports mentioned in this article are logical ports with port numbers ranging from 0 to 65535.

How to view the open port and closed port number of computer equipment?

For the service corresponding to the port number of the device, first understand the service corresponding to the common port. There are many open ports. The following figure only lists the services corresponding to some ports. For example, port 80 is used for browsing web services, port 2 1 is used for FTP services, and so on.

How to view the open port and closed port number of computer equipment?

Look at the open port number of your computer 1. What ports are open in your computer? Open a command prompt and start-> Attachment-> Command prompt, or direct shortcut key win+R, run the window, enter CMD and press enter;

How to view the open port and closed port number of computer equipment?

How to view the open port and closed port number of computer equipment?

Look at the open port number 2 of the computer, and enter the common command netstat -a -n at the command prompt to display the port number and status of TCP and UDP connections in digital form.

How to view the open port and closed port number of computer equipment?