Security Basics mailing list archives
RE: Advice on Fastest NMAP Scan
From: "Andy Cuff" <AndyCuff () securitywizardry com>
Date: Wed, 27 Oct 2004 18:51:22 +0100
Jack, If you are scanning networks where bandwidth is an issue you may wish to consider the use of a packet shaping tool in addition to the nmap parameters to restrict speed, this will prevent you DOSing yourself. (been there, done that, got shouted at) Regards -andy cuff The Talisker Network Security Portal http://securitywizardry.com Computer Network Defence Ltd -----Original Message----- From: Mogren, Jack L. [mailto:mogren () mayo edu] Sent: 26 October 2004 15:59 To: 'security-basics () securityfocus com' Subject: Advice on Fastest NMAP Scan Hi, 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. nmap -O -T4 -PE -F --osscan_limit -oX /home/security/test.xml -iL /home/security/ip_addresses.txt Any comments or suggestions? Also, has anyone had luck importing a NMAP-generated XML file into MS Access? When I do so, it creates the tables, but the fields are blank. No data. Thanks, Jack Mogren Mayo Clinic Foundation Information Security Office --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.782 / Virus Database: 528 - Release Date: 22/10/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.782 / Virus Database: 528 - Release Date: 22/10/2004
Current thread:
- Advice on Fastest NMAP Scan Mogren, Jack L. (Oct 26)
- Re: Advice on Fastest NMAP Scan robert (Oct 26)
- Re: Advice on Fastest NMAP Scan Fyodor (Oct 26)
- Re: Advice on Fastest NMAP Scan GuidoZ (Oct 28)
- Re: Advice on Fastest NMAP Scan Ghaith Nasrawi (Oct 29)
- Re: Advice on Fastest NMAP Scan Gabriel Orozco (Oct 27)
- RE: Advice on Fastest NMAP Scan Andy Cuff (Oct 27)