ports/116778: security/nmap ping-scan misses some hosts

[Daniel Roethlisberger]

The following reply was made to PR ports/116778; it has been noted by GNATS.

From: Daniel Roethlisberger <daniel at roe.ch>
To: "Mark D. Foster" <mark at foster.cc>
Cc: bug-followup at FreeBSD.org
Subject: Re: ports/116778: security/nmap ping-scan misses some hosts
Date: Mon, 22 Oct 2007 12:27:55 +0200

 Sorry for the delay, been terribly busy at work.
 
 Mark D. Foster <mark at foster.cc> 2007-10-01:
 > It seems that despite specifying -PE nmap is solely relying on ARP to
 > determine who is up or not. Also it is not seeing the ARP replies when
 > a range is used.
 
 I can reproduce this, thanks for reporting.  That it uses ARP instead of
 ICMP for directly connected nets is a documented feature.  There seems
 to be some sort of off by one bug with some ranges, as you have
 reported, I can see the same here.
 
 I will try to produce a fix soon.  If you have some spare time, you can
 help me by trying to build the latest development version of nmap from
 source and verifying that the bug has not been fixed yet.
 
 -- 
 Daniel Roethlisberger <daniel at roe.ch>