[Dshield] FW: OT MAC question

Johannes B. Ullrich jullrich at sans.org
Fri Mar 17 23:46:32 GMT 2006

Hash: RIPEMD160

Sounds like all you need is to run tcpdump on a wireless system close to
the AP (so it sees the same packets?)

Paul Marsh wrote:
>  This is a first, I didn't receive any response on this.  Anyone have
> any ideas where I should look?
> Thanx, Paul
> -----Original Message-----
> From: Paul Marsh
> Sent: Wednesday, March 15, 2006 12:19 PM
> To: 'General DShield Discussion List'
> Subject: OT MAC question
> Once again and as always please excuse the OT question but I know the
> list will answer my question ;)
> I've rolled out a Linksys WRT54Gx2. I'm having issues with it (I won't
> go in to it) but part of troubleshooting the problems has revealed
> outside connection attempts.  Multiples for the same two MACs every
> second, so many I'm thinking that it could be a piece of the pie eating
> up CPU cycles. 
> I've ping the broadcast address of the LAN and checked arp cache but
> can't find the MACs in question.  Linksys's admin interface for the WRT
> is limited at best, I can't find any place in the interface to show arp
> cache.  I know I'll eventually end up at OpenWRT but I'm not ready for
> that just yet.
> The question is, is there a tool out there that I could use to identify
> these connection attempts?
> Thanx, Paul  
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- -------------------
Johannes B. Ullrich, Ph.D
Chief Research Officer
SANS Institute
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