How to find what's listening on what port

[andrew at bishop.dropbear.id.au]

On Thu, 11 Oct 2001, Mark Hummel wrote:

> The output of netstat -A yields the following line:
>
> tcp        0      0 *:6000                  *:*                     LISTEN
>
> How do I discover what is listening on that port? It does not appear in
> /etc/services.

netstat -A -p

Andrew