RE: Why only detecting host-based attacks?

["David Chait" <davidc () bonair stanford edu>]

Make sure you are not plugged into a switch rather than a HUB (and if you
are...make sure port spanning is enabled for that machine). My guess is
Snort can't even see the traffic to begin with.

-----Original Message-----
From: snort-users-admin () lists sourceforge net
[mailto:snort-users-admin () lists sourceforge net]On Behalf Of Terry J
Dunlap Jr
Sent: Wednesday, June 26, 2002 9:12 AM
To: snort-users () lists sourceforge net
Subject: [Snort-users] Why only detecting host-based attacks?


I'm a newbie to snort and the IDS field. I've loaded snort 1.8.6 onto a
FreeBSD 4.6 box. I have it configured as var HOME_NET x.x.x.0/24. I also
have it configured as var EXTERNAL_NET !$HOME_NET.

To test, I will ssh to a remote machine at home, run Nmap and Nessus
against different machines on my network. The only reports I get are
those scans and probes against the machine upon which snort is
installed. I get no info regarding the scans and probes of the other
machines on the network.

When I launch snort -v for sniffer mode, I'm able to see all the network
traffic. So I know promiscuous mode works. When snort is in IDS mode,
I've run ifconfig to confirm the NIC is in promiscuous mode as well.

Am I missing something in the .conf file? I've read the Snort User's
manual (maybe not closely?).

Suggestions?

Terry




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