Re: Spoofed scans

[Will Aoki <waoki () umnh utah edu>]

On Mon, Jan 07, 2002 at 02:04:57AM +0100, Philip Wagenaar wrote:
> Do you mean get the MAC address? If so MAC addresses aren't unique
> anymore, and how could you lookup what MAC address belongs to what IP?

Assuming that you're on the same local net as the machine you're
interested in (but then, if you're not on the same local net, the MAC
is difficult to obtain in the first place and probably won't do you
much good), the arping tool from http://synscan.nss.nu/programs.php
will find whatever IP(s) are associated with a MAC.

It's quite a handy little tool - I've used it in the past to hunt down
misbehaving hosts.


Non-unique MACs? Wouldn't that break ethernet?

> Philip Wagenaar
>
> > -----Original Message-----
> > From: James [mailto:jamesh () cybermesa com] 
> > Sent: maandag 7 januari 2002 1:47
> > To: incidents () securityfocus com
> > Subject: Re: Spoofed scans
> >
> >
> > Capture the data link layer and get the hardware address. 
> > Perhaps this will indicate the true IP.
> >
> >
> > "Ask the plants of the earth and they will teach you." Job 12:8
> >
> > ----- Original Message -----
> > From: "Richard Arends" <richard () unixguru nl>
> > To: <incidents () securityfocus com>
> > Sent: Sunday, January 06, 2002 4:41 AM
> > Subject: Spoofed scans
> >
> >
> > > Hello,
> > >
> > > Last couple of weeks i'm getting more and more spoofed scans on my 
> > > firewall. All scans are icmp or port 53 (domain). Mostly 
> > 'they' first 
> > > send a few icmp packets and then a scan for port 53 trying to do a 
> > > reverse lookup for my ip.
> > >
> > > Are there more seeing this type off scans and is there a way to 
> > > substract the real scanner (ip) from the list ip's ???
> > >
> > > Greetings,
> > >
> > > Richard.

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