Re: Advice on Fastest NMAP Scan

[robert () dyadsecurity com]

Mogren, Jack L.(mogren () mayo edu)@Tue, Oct 26, 2004 at 09:58:50AM -0500:
>   I want to use NMAP to perform a network inventory on our network.  We have over 75,000 networked devices.  The 
> address ranges include one class B, several class Cs, and the entire private address space.  That's a lot of 
> addresses to scan and I expect it to take a long time.  I'm looking for advice on what options one might use to 
> create the fastest NMAP scan.  I'm only interested in finding our each devices OS and open services.  Here's what 
> I've come up with so far.

Jack,

You may want to look into unicornscan (http://www.unicornscan.org).  It was built to handle networks of that size.

The getting started guide (http://www.dyadsecurity.com/unicornscan/getting_started.txt), and the FAQ 
(http://www.dyadsecurity.com/unicornscan/unicornscan_faq.txt) will help you with sample syntax.

If you run into any problems, let us know at osace-users () lists sourceforge net.

Robert

-- 
Robert E. Lee
CTO, Dyad Security, Inc.
W - http://www.dyadsecurity.com
E - robert () dyadsecurity com
M - (949) 394-2033