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Date:      Wed, 08 Dec 1999 09:26:17 +0100
From:      Tony Voet <Tony.Voet@rug.ac.be>
To:        Matt Gostick <matt@crazylogic.net>
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: ethernet promiscuous mode.
Message-ID:  <384E1629.D70C4569@rug.ac.be>
References:  <Pine.BSF.4.10.9912080049330.68943-100000@thunk.crazylogic.net>

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Matt Gostick wrote:
> 
> It is my understanding that promiscuous mode is used for sniffers
> so they can capture all packets...  Is there any other reason why
> my ethernet card would go into promiscuous mode without root (me)
> telling it to?  Or is it more probable that someone hacked root
> and is sniffing other machines on the network from my box?

DHCP and advanced port scanners can put your NIC in promiscuous mode too.

Best regards,

Tony Voet			Radiology and Medical Imaging
Phone:	+32 9 240 4073		Gent University
Fax:	+32 9 240 4969		De Pintelaan 185
mailto:Tony.Voet@rug.ac.be	9000 Gent
http://mri2-gw00.rug.ac.be/	Belgium


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