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RE : Promiscuous Mode
From: <benoni.martin () accenture com>
Date: Wed, 19 Mar 2008 20:52:30 +0100

Hello Simon,
 
Quite simple:
- no promisc: your NIC looks at the network, and takes only the packets destinated to it (gets the packets where 
"destination MAC address" = "NIC MAC address"),
- promisc: your NIC looks at the network, and takes ALL the packets it can get, whether they are adressed to it or not.
 
So, in a nutshell:
- no promisc: your NIC shows you only your trafic
- promisc: your NIC shows you all the trafic on the wire
 
HTH ...

________________________________

De: listbounce () securityfocus com de la part de Simon Templar
Date: mer. 19/03/2008 14:51
À: pen-test () securityfocus com
Objet : Promiscuous Mode



Hello everybody,

I have a question concerning "Promiscuous Mode", I know what it is,
but I would like to know exactly what is happening behind the scenes
when I change my NIC to this mode

For example: what is the technicality in writing the command:
 ifconfig eth0 promisc?

Your help is so much appreciated.
Best regards.

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