Re: Discovery issue

[Daniel Miller <bonsaiviking () gmail com>]

On 10/31/2013 07:24 AM, martin.pilote () videotron com wrote:
> Hello,
>
> I searched over the web and i was not able to find out what is wrong with
> nmap.
> I'm doing vulnerability scan with nessus but before i'm using nmap to
> check wich IP is alive.
>
> Soo before Mars 2013, i was using nmap with -sn, --reason and results was
> pretty fine.
> After updated from version 5.5 to 6.4, almost all the IP is not considered
> as UP.
>
> I've tested yesteday with version 5.5 and 6.4 for 6300 IP :
> 5.5 = 132 are UP
> 6.4 = 1648 are UP
>
> When i check into the result, a lot of them seem to be caused by a reset
> and most of them dont have any open or filtered port.
>
> Any one have a clue ?
>
> Martin
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Martin,

So that we can better diagnose your problem, would you mind sending the 
output of "nmap --version" and "nmap --iflist" (sanitized if you like)? 
There were some changes to route detection between those versions, and 
you may have an interface type that we don't handle yet. Also, 
information about your OS would be helpful.

Dan
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