Strange Ports Being Used

Bill Campbell linux-sxs
Tue Mar 13 08:47:13 PDT 2007

On Tue, Mar 13, 2007, Steve Jardine wrote:

>Anyone got a good idea as to what I can use to determine what program is
>bound to which port on my system?

lsof -n -i :port
	OR for DNS resolution
lsof -i :port

Then you can see what a particular processid is using:

lsof -p pid

This can be very useful to determine what system a zombie IRC is
using (probably something in undernet :-).

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