How to View Computer Ports Common Computer Port Numbers Introduction

Network Infrastructure Vulnerabilities are the root cause of all technical security issues in computer information systems. These lower-level vulnerabilities affect everything that runs on the network. This is also a vulnerability that everyone needs to test. Find it and eliminate them to keep your computer relatively safe. The computer port is often used by people with a heart, which poses a safety hazard to us. Of the 65536 TCP and UDP ports, many are open. Some will not threaten our computer security, but some will be irreparably lost if they are exploited. Some tools, such as supescan and nmap, can scan open ports on the network. It is still necessary to know some of the port knowledge.

View all the ports under your Windows system

Available at the command prompt, execute Start ——Run ——CMD commands, as shown below:
Use netstat –an View the local port that is being monitored. LISTENING represents the current listening state, ESTABLISHED represents the established connection, is in communication state, TIME_WAIT represents the end of the access, CLOSE_WAIT represents waiting for the connection interruption request from the local user. Some frequently used ports

Extended link: How to close the computer port 2 ways to close the port method.