Help!!!

["Brandon Hanks" <hanksbc () knology net>]

I used Patrick S. Harper's install guide, Snort, Apache, PHP, MySQL, ACID on Redhat 9.0 Installation Guide , without 
any problems.  Here is my problem: When I perform a Nessus audit on a machine on my local network, Snort does not log 
any intrusion detection activity.  But, when I direct the Nessus audit directly at the box running Snort, the log files 
are generated and can be viewed using Acid.  In my snort.conf file, I defined my local network as 192.168.0.0/24, which 
covers a small windows environment.  BTW, using Snort 2.0.  The Snort box is located on my local network at 
192.168.0.198.  Why does it not register,log, or recognize attacks directed at machines within its local network?  Any 
help will be greatly appreciated...Thanks