nmap gives info not of open ports but on services that are running.

[Steve Friedman]

On Fri, 4 May 2007, Les Mikesell wrote:

> Strong wrote:
>> On Wed, 02 May 2007 15:10:06 -0700 Michael A Peters <mpeters at mac.com>
>> THank You, but is there a way I can inspect my open ports from within
>> my machine?
>
> "netstat -an" will show you the ports with listeners as well as established 
> connections.  That doesn't mean a packet can reach them, though.
>

netstat -anp (as root) will also provide the pid and process name

Steve Friedman