RE: bug report

["Rob Nicholls" <robert () everythingeverything co uk>]

Is it listing a different MAC address for every IP that's up, or is it the
same IP no matter what? I think I've seen that behaviour once before with a
wireless access point that appeared to return its own MAC address for every
local IP address (even, as you've seen, when the host doesn't exist).

You can add --reason to the command line to see why Nmap thinks the host is
up, but if it's an IP on your subnet then it basically has to be an
"arp-response", which means that something on your network is returning an
ARP response to you and claiming to be that IP.

For reference, I couldn't reproduce your issue with Nmap 5.00 on my copy of
Windows XP SP3 (the service pack shouldn't make a difference).

Rob

-----Original Message-----
From: nmap-dev-bounces () insecure org [mailto:nmap-dev-bounces () insecure org]
On Behalf Of Ibrahim
Sent: 26 July 2009 09:19
To: nmap-dev () insecure org
Subject: bug report

nmap -sP 192.168.1.*
it reporting every ip addresses is up even those ip addresses doesn't
have machines behind them .
would you check that please
my nmap version: 5.00
my OS: windows xp sp 2

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