Penetration Testing mailing list archives
RE: NMAP Switches, -sS, -sT, etc.
From: "David Ball" <lostinvietnam () hotmail com>
Date: Mon, 27 Mar 2006 12:24:35 +0800
I'd start off with initial scans against a selection of the more common ports i.e. nmap -sS -p 21,22,23,53,80,443,135,137-139, 445 and 1433,1434. These scans will take less time to complete and allow you to start your pen test without needing to wait for a full set of scans against all 65K ports to finish. The full scans will need to be run at some point but they can be run in parallel as you work on the initial subset.
David.
"Tate Hansen" <tate () clearnetsec com> No Phone Info Available 03/25/2006 06:52 AM To "'Doug Fox'" <dfox168 () hotmail com> cc <pen-test () securityfocus com> Subject RE: NMAP Switches, -sS, -sT, etc. I like to run nmap in phases to balance the speed and accuracy. For example, run only a SYN scan (-sS) for the 1st phase then follow up with the service detection, OS detection, etc., scan after you discover the list of 'live' devices and open ports. In my experience those extra options can add lots of time (especially when scanning large blocks, like a /16) and I like to obtain the open port list as soon as possible to feed others tools (amap, nessus, etc.). I also always try to add options to account for current latency conditions, bandwidth availability, and the specs of the server running nmap. Things like: min_hostgroup, min_parallelism, min-rtt-timeout, --max-retries. An initial scan I may run with high latency (400ms rtt), lots of bandwidth, and a good server is: nmap -vv -sS -P0 -p 1-65535 -n --min_hostgroup 100 --max_retries 3 --max_rtt_timeout 1250 --min_parallelism 100 -oA <output_file> <net_block> For a follow up: nmap -vv -p <open_port_list> -sT -A -P0 -n --min_hostgroup 100 --max_rtt_timeout 1250 --min_parallelism 100 -oA <output_file> -iL liveIPList Another observation: I frequently find additional open ports when executing multiple scans of the same blocks at different times. For whatever reason (e.g. network hiccup, target load, server load) it helps to run repeated scans if you want to improve/have greater confidence in your results. Running a few SYN services scans in addition to your normal scans at different times may reveal a few more open ports. Tate Hansen ClearNet Security -----Original Message----- From: Doug Fox [mailto:dfox168 () hotmail com] Sent: Thursday, March 23, 2006 8:07 AM To: pen-test () securityfocus com Subject: NMAP Switches, -sS, -sT, etc. If I may, I like to poll the list what are your favorite switches when using NMAP to conduct "intensive/comprehensive" security testing. I have been using NMAP -vv -A -sS -O -p1-65535 -P0 -oX target.xml www.xxx.yyy.zzz. I find I got more information using -sS than -sT and requires short time. Any suggestions/comments are appreciated. Thanks, DF ---------------------------------------------------------------------------- -- This List Sponsored by: Cenzic Concerned about Web Application Security? As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/forms/ec.php?pubid=10025 And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com ---------------------------------------------------------------------------- -- ------------------------------------------------------------------------------ This List Sponsored by: Cenzic Concerned about Web Application Security? As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/forms/ec.php?pubid=10025 And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com ------------------------------------------------------------------------------
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------------------------------------------------------------------------------ This List Sponsored by: CenzicConcerned about Web Application Security? As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/forms/ec.php?pubid=10025 And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com
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Current thread:
- NMAP Switches, -sS, -sT, etc. Doug Fox (Mar 23)
- Re: NMAP Switches, -sS, -sT, etc. Fixer (Mar 24)
- RE: NMAP Switches, -sS, -sT, etc. Tate Hansen (Mar 24)
- Re: NMAP Switches, -sS, -sT, etc. Doug Fox (Mar 24)
- Re: NMAP Switches, -sS, -sT, etc. Tim Brown (Mar 28)
- <Possible follow-ups>
- RE: NMAP Switches, -sS, -sT, etc. Makousky, Steve C (Mar 24)
- Re: NMAP Switches, -sS, -sT, etc. Doug Fox (Mar 24)
- Re: NMAP Switches, -sS, -sT, etc. admin (Mar 24)
- RE: NMAP Switches, -sS, -sT, etc. Arley Barros Leal (Mar 24)
- RE: NMAP Switches, -sS, -sT, etc. David Ball (Mar 28)
- Re: NMAP Switches, -sS, -sT, etc. Marco Ivaldi (Mar 30)