RE: Alert Based on MAC Address

["Bamberger, Marc (M.A.)" <mbamberg () visteon com>]

Arpwatch is what I was looking for, thanks for the help.

Marc Bamberger

-----Original Message-----
From: Tom Sevy [mailto:tsevy () epx com]
Sent: Thursday, March 21, 2002 4:38 PM
To: 'Bamberger, Marc (M.A.)'
Subject: RE: [Snort-users] Alert Based on MAC Address


Marc,

If you are running your snort on a *nix/BSD type os platform, you might want
to look into ARPWATCH, and some possible filter + alert.

-----Original Message-----
From: Bamberger, Marc (M.A.) [mailto:mbamberg () visteon com] 
Sent: Thursday, March 21, 2002 3:35 PM
To: 'snort-users () lists sourceforge net'
Subject: [Snort-users] Alert Based on MAC Address


I'm interested in tracking a PC that keeps changing it's IP address by it's
MAC (Ethernet) address. I would like to write a rule that would alert
whenever a certain MAC address appears in a packet.

It looks like the content keyword only scans the data of the packet and
doesn't match against headers. Am I misunderstanding the content keyword or
is there another way to accomplish this?

Any help would be appreciated.

Thanks,
Marc Bamberger

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