RE: Snort Topology Configuration

["Hutchinson, Andrew" <Andrew.Hutchinson () Vanderbilt edu>]

That sounds correct.  Spanning requires no special configuration on your
snort box - just make sure that you have your $HOME_NET var defined
correctly in your config file, and all should be well.  If you're using
a second port to gather the alerts or access the snort box, you'll also
have to use the -i switch  when you start snort to specify which
interface you're monitoring.

Hope that helps,

Andrew

-----Original Message-----
From: DThomaz () flowserve com [mailto:DThomaz () flowserve com] 
Sent: Monday, June 24, 2002 2:15 PM
To: Snort-users () lists sourceforge net
Subject: [Snort-users] Snort Topology Configuration


I have setup snort on my local LAN. The snort box is collecting only
from my LAN. I want to sniff all packages that came from my WAN in to
the LAN using snort. My question is that if I span the Ethernet port of
my WAN router to the sniffer port should collect all  WAN data coming in
the LAN? Here is my network:

     ethernetport<router>WAN--------------CLOUD
            |
            |
     switch CAT4k
            |
            |
     Snort box

Do I need any special configuration on the snort box to use the span
command from the switch?

Thanks for the support,

dthomaz





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