Great Circle Associates Firewalls
(October 1997)
 

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Subject: Re: Promiscuous mode
From: "Luke Gill" <lukeg @ ibm . net>
Date: Mon, 13 Oct 1997 17:28:20 -0400
To: "Rik Hemsley" <hemsleyr @ keyline . co . uk>, <Firewalls @ GreatCircle . COM>
Reply-to: "Luke Gill" <lukeg @ ibm . net>

This is interesting, because I am having the opposite problem.  I have
installed two Interphase FDDI SAS cards in my Ultra 1 running Gauntlet 3.2a
and running gated version 3.5.5.

I cannot get gated to "hear" the routers unless I have snoop running on each
interface to put the card in promiscuous mode.  How do I put the card in
promiscuous mode by default?  Or is there  better way to get gated to listen
for the OSPF multicasts?

Luke


-----Original Message-----
From: Rik Hemsley <hemsleyr @
 keyline .
 co .
 uk>
To: Firewalls @
 GreatCircle .
 COM <Firewalls @
 GreatCircle .
 COM>
Date: Monday, October 13, 1997 9:35 AM
Subject: Promiscuous mode


>Hi, I'm new to the list.
>
>During my seacurity self-teaching process, I've
>heard about network interfaces being in 'promiscous'
>mode.. and this being a Bad Thing(tm)
>
>I get the idea, but what kind of workarounds are
>there, aside from encrypting every communication ?
>
>A sniffer needs a machine to run on; and to read packets
>over the local net, it needs to be inside, right ?
>( or can it spoof ? )
>
>Is it every necessary for an interface to be in promisc.
>mode and if not, how do you 'switch it off ?'
>
>Thanks in advance,
>Rik
>
>
>
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