How to kill a port

To find the process ID, try:

sudo lsof -i :portNumber

Kill the process which is currently using the port using its PID

kill PID

and then check to see if the port closed. If not, try:

kill -9 PID

I would only do the following if the previous didnt work

sudo kill -9 PID

 

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stackoverflow.com/questions/12397175/how-do-i-close-an-open-port-from-the-terminal-on-the-mac