How can I close a port (seen open on netstat)?

Question

I used netstat and I see some ports open that I want closed. How do I close them?

The computer is a Mac running OS X

Solution

Try using

lsof | grep portnumber

to get the process that has it opened.

You could also use the -i option to let lsof do the filtering for a TCP port

lsof -i TCP:portnumber

Comments

[fardjad]

you should ask this question in superuser

[unknown]

netstat -lp will give you process/port

[Admin]

... did not work ... Mac OSX ***

[unknown]

brandonhutchinson.com/Port_to_PID_with_lsof.html, sial.org/howto/debug/unix/lsof