Nmap Development mailing list archives
Re: How to estimate Coverage and number of scanning ports
From: nnposter <nnposter () users sourceforge net>
Date: Sun, 31 Mar 2019 17:18:59 -0600
On 3/30/19 10:19 PM, Yusuke Osumi wrote:
According to the book "Nmap Network Scanning" by Fyodor, at p.141, - 576 ports : 90% Effectivenss - 1558 ports : 95% Effectiveness I take "Effectiveness" as Coverage, so when I scan 600 ports, I guess coverage is over 90%. I want to estimate such number.
My own results of internal scanning, unobstructed by firewalls: * top 16 ports represent 50% of all ports open * top 74 ports represent 75% of all ports open * top 627 ports represent 90% of all ports open * top 4,313 ports represent 95% of all ports openThese numbers represent one large corporate entity so the curve is obviously compressed to the left, when compared to the universe.
Cheers, nnposter _______________________________________________ Sent through the dev mailing list https://nmap.org/mailman/listinfo/dev Archived at http://seclists.org/nmap-dev/
Current thread:
- How to estimate Coverage and number of scanning ports Yusuke Osumi (Mar 30)
- Re: How to estimate Coverage and number of scanning ports nnposter (Mar 31)