Re: Nmap 3.93: Spoof mac does not work when network card not in promiscious mode

[Greg Darke <starstuff () optusnet com au>]

Just a follow up on the message I sent earlier,

It seems that this is not the whole story... This problem only seems to
come up when I have previously changed my mac address on my network
card. 

spoof_mac works without a problem, if I don't change any settings on my
network card. But if i change the mac address (I need to so that I can
use it on the network at Uni), Nmap is not able to see any packets that
come back to the spoofed mac address unless I place the network card
into promiscuous mode.

Is anybody else having the same problem, or is it a bug with my network
card?

Greg

On Wed, 2005-09-14 at 12:20 +1000, Greg Darke wrote:
> Hi list,
>
> I have just been playing around with the version 3.93 of Nmap, and
> discovered that when you run a scan with the '--spoof_mac 0' option, it
> is only able to scan itself. Then when I started up ethereal to see what
> was (or wasn't) happening, Nmap started to see all of the remote hosts
> and correctly scanning them.
>
> This could also be the reason why the arp scan with spoof mac enabled
> doesn't work correctly.
>
> I am running Linux (Fedora Core 4). My kernel version is 2.6.12-1.1390,
> I am using a Marvell 88E8036 Fast Ethernet Controller (using the sk98lin
> driver).
>
> Greg
>
>
> --=-/22p3CwULnrbSdRSOEHv--
>
>
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