How to check if a network port is open on linux?

Question

How can I know if a certain port is open/closed on linux ubuntu, not a remote system, using python? How can I list these open ports in python?

• Netstat: Is th

Answer 1

If you only care about the local machine, you can rely on the psutil package. You can either:

1. Check all ports used by a specific pid:

   proc = psutil.Process(pid)
   print proc.connections()
   

2. Check all ports used on the local machine:

   print psutil.net_connections()
   

It works on Windows too.

https://github.com/giampaolo/psutil