Snort mailing list archives

Re: Snort and acidcenter


From: Allan Dover <adover () rogers com>
Date: Wed, 1 Jan 2003 19:31:41 -0500

This is very interesting.  I use a netgear switch for my wan and lan.   When 
someone surfs a porn site in my house, I see it come up on ACID.  I do not 
get the url, I just get the IP address.  Snort is set on eth0 which is the 
DMZ port on my router.  I see all traffic that comes through my switch and 
router.  Maybe I am not understanding the difference and why snort would care 
or not see activity on a switched network if it was set that way.

On Wednesday 01 January 2003 01:38 pm, Rich Adamson wrote:
i have a netgear dualspead 10/100 hub...
are you telling me this wont work ?

I use the Netgear DS104 dual speed hub when professionally
evaluating networks. It works fine for sniffing, snort, etc,
"except" when equipment attached to the hub are operating at
different speeds. If you statically define the interface
speed (for each attached device) at the exact same speed for
all devices, the hub will work fine.

However, if one interface is operating at 100 megabits (as
an example) and others are at 10 megabit, there is a very high
probability the hub will start functioning as a switch and you
won't see packets passing between interfaces as expected.



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