RE: Hidden Ports

["nate" <nate () mcconnellsonline com>]

Would recommend that on a windows box locally run FPORT from foundstone, on
a *NIX box I would use a netstat to view what ports are open. 

A port scanner could possibly see it or it may not depending on if it is
over the internet or if it is on the lan or if it is local to the machine
can affect some of the results.

-----Original Message-----
From: Eduardo Sorensen [mailto:ovo () osite com br] 
Sent: Tuesday, February 03, 2004 10:46 AM
To: security-basics () securityfocus com
Subject: Hidden Ports

Can a port scanner not see a port that is opened?

The question is: can a backdoor be on a machine, and with nmap -p 1-,
for example, you couldn't see it?

Thank you,
Eduardo


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