Re: nping, arp ping behavior simulation

[Luis MartinGarcia <luis.mgarc () gmail com>]

Hi Vlad

Please try setting up the source and destination MAC addresses manually.
Let me know if that works.

Best regards

Luis

-- Sent from a mobile phone. Please excuse typos and brevity.
On 2 Oct 2015 9:54 am, <Vlad.Mihailov () emerson com> wrote:

> Hi folks!
>
>
>
> I was using nping to perform level 2 probes using arp packets (‘nping
> --arp <198.18.1.200> -e eth1’)  while my eth1 interface has a different IP
> subnet of 172.17.1.0/24. The expected behavior was to have a stream of
> arp-who-has/arp-is-at packets regardless of the mismatching subnets (since
> arp will operate at the level 2 it should not matter that the requests are
> coming from a wrong subnet IP).
>
>
>
> But instead nping comes back with an error:
>
>
>
>
> ==================================================================================
>
> C:\Program Files (x86)\Nmap>nping --arp 198.18.1.200 -e eth1
>
>
>
> Starting Nping 0.6.49BETA2 ( http://nmap.org/nping ) at 2015-10-01 11:41
> Mountain Daylight Time
>
> Failed to determine route to host 198.18.1.200. Skipping it...
>
> Execution aborted. Nping needs at least one valid target to operate.
>
>
>
> C:\Program Files (x86)\Nmap>
>
>
> ==================================================================================
>
>
>
> I am not sure if this is something that is easy to implement but it will
> be sure a nice to have feature. It will allow configuring the probing
> computer with a bogus IP network to perform L2 scans of a new network
> without setting up an IP address that matches the subnet and risking
> IP-address conflicts.
>
>
>
> Thank you.
>
>
>
> *--*
>
> *Vlad Mihailov*
>
>  T +1 403.212.7409 | C +1 403.607.7311
>
>
>
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