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Network Security Security-Basics
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RE: Simple Scan

Subject: RE: Simple Scan
Date: Thu, 17 Feb 2005 21:06:41 -0800
With nmap <www.insecure.org>:

nmap -P0 -p 3321 AAA.BBB.CCC.DDD/MM

So -P0 says don't ping.  -p 3321 says probe only that port.  You may want to
turn on verbose mode with -v.  If you aren't root/administrator you'll only be
able to run a TCP Connect.  If you are root/administrator you can run a
half-open TCP scan.  If you want to probe for UDP ports use -sU.  UDP can have
unpredictable results depending on the target OS.

Hosts that are down/firewalled will come back with port filtered status.

-----------------------
Brandon Enright
ACS/Network Operations
bmenrigh@ucsd.edu

-----Original Message-----
From: Paul Selibas [mailto:gotiex@yahoo.com]
Sent: Tuesday, February 15, 2005 11:14 PM
To: security-basics@securityfocus.com
Subject: Simple Scan

 Greetings all...

 I am looking for a way to check which hosts are up
 and have port 3321 open on my network. But i dont
 want to ping, is there no way of just probing port
 3321 and reporting back if it is open or not?

 Many Thanks





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