Great Circle Associates Firewalls
(June 1996)

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Subject: Re: Network ethernet sniffer
From: gary flynn <gary @ habanero . jmu . edu>
Date: Thu, 27 Jun 1996 09:00:48 -0400
To: firewalls-owner @ GreatCircle . COM, gunni @ if . is
Cc: firewalls @ GreatCircle . COM

> From: Ben <adept @
 cep .
 yale .
> To: Gunnar Ingvi Thorisson <gunni @
 if .
> Cc: firewalls @
 GreatCircle .
> Subject: Re: Network ethernet sniffer
> >    is it possible to detect if a machine and then which machine might be 
> > sniffing the network if the machines are about 60 - 70 on that subnet.
> > It would be good to know if it is possible and then how if someone knows.
> You can use programs to detect if there are any ethernet adaptors in 
> promiscuous mode.


I assume you're talking about a program you take to the workstation
to run? If not, can you give an example of a program that can determine
promiscuous state remotely? I can't figure out how this would work unless
it detects a whirlpool around the promiscuous NIC <GRIN>


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