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Re: Port Scan for UDP

On Sat, 20 Oct 2001, Marc Wilson wrote:

> On Sat, Oct 20, 2001 at 07:18:25PM -0700, Jeff Coppock wrote:
> > Just for grins, I removed every udp listing in
> > /etc/services and restarted inetd and the scan came back the
> > same.  I figure this is normal, but if someone can confirm this
> > behaviour, I'd really appreciate it.
> Adding or removing lines in /etc/services doesn't open or close ports...
> this is a common misconception.  Removing what's listening on a particular
> port is what closes that port.

A good way to find out what process is listening on a port is to load the
lsof package and use "lsof -i" (as root so that you'll see everything).

  tony@mancill.com     |  An ounce of perception,
http://www.debian.org  |     a pound of obscure...
                       |        (Peart)

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