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Network Security Pen-Test
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Re: fast nmap scan of XP boxes?

from [Daniel Miessler] Network Security [Permanent Link]
Subject: Re: fast nmap scan of XP boxes?
Date: Fri, 28 Oct 2005 22:14:56 -0400 

On Aug 12, 2005, at 1:58 PM, Michael Weber wrote:

I am using nmap to create a list of targets that I will then use other
tools to test. My problem is how can I do a fast scan of a large (class
B) network of systems running XP, most with firewalling turned on? Will
nmap -sP still find the systems if ping does not?

I have something just for you; I use it constantly during assessments just for this purpose:

nmap -vv -n -sP -PS21,22,23,25,53,80,110,135,139,143,445,1433,1521 $target | grep appears | grep up | cut -d" " -f2 > $outfile

What this does is "ping" the host via not just ICMP, but also via TCP connections on the ports listed. :) It makes great lists and, as you know, it saves tons of time when you import a list of active hosts instead of just feeding a network.

Hope you like it. :) Oh, and here's my Nmap "Primer" which has a couple other decent nuggets:

http://dmiessler.com/study/nmap

--
Daniel R. Miessler
M: daniel@dmiessler.com
W: http://dmiessler.com
G: 0x316BC712




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