Topic: How do I view port usage in windows?

From: http://www.iteye.com/topic/1117270
	Posting time: 2011-10-31 Windows Start -- run -- cmd enter the command prompt and enter netstat-ano. Then you can see all connected PIDs and find the corresponding PID in the task manager.ProgramIfNo PIDYou can select "View"-"Select column" in the task manager" Often, when we start an application, we find that the ports required by the system are occupied by other programs. How do we know who owns the ports we need, next we will introduce a very simple method and hope it will be useful to you. If we need to determine who occupies our port 9050 1. Windows Platform Run the following command in the Windows command line window: 1. View All port usage C: \>Netstat-ano Protocol local address external address status PID TCP 127.0.0.1: 1434 0.0.0.0: 0 listening 3236 TCP 127.0.0.1: 5679 0.0.0.0: 0 listening 4168 TCP 127.0.0.1: 7438 0.0.0.0: 0 listening 4168 TCP 127.0.0.1: 8015 0.0.0.0: 0 listening 1456 TCP 192.168.3.230: 139 0.0.0.0: 0 listening 4 TCP 192.168.3.230: 1957 220.181.31.225: 443 established 3068 TCP 192.168.3.230: 2020 183.62.96.189: 1522 established 1456 TCP 192.168.3.230: 2927 117.79.91.18: 80 established 4732 TCP 192.168.3.230: 2929 117.79.91.18: 80 established 4732 TCP 192.168.3.230: 2930 117.79.91.18: 80 established 4732 TCP 192.168.3.230: 2931 117.79.91.18: 80 established 4732   2. view the usage of the specified port C: \>Netstat-Aon | findstr" 9050" Protocol local address external address status PID TCP 127.0.0.1: 9050 0.0.0.0: 0 listening 2016 P: Have you seen it? The port is occupied by the process whose process number is 2016. Continue to execute the following command: (you can also view the PID process in the Task Manager) 3. view the PID Process C: \>Tasklist | findstr" 2016" Image name PID session name session # memory usage ========================================================== ========== Tor.exe 2016 console 0 16,064 K P: clearly, tor occupies your port.   4. End the process C: \>Taskkill/F/T/IM tor.exe     If you do not know how to use help ~