program that answers

[meritj @ fincen . treas . gov (Jim Meritt)]

I can use strobe to identify that a port is answering on a system.  I want to
identify WHAT is listening to that port.  It is not a privledged port, nor one
listed in the /etc/services (and inetd.conf) file.  Is there something (that I
can run on that system) that will identify what is listening to/responding to
a high port number?

(this is a firewalls question, since it is tracking down possible "holes"
in the wall.  I don't want to just close it - I want to stop it at its
source)

Jim Meritt