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From: cnuddep () rogers com
Date: Tue, 25 Oct 2011 12:23:06 -0700 (PDT)

greetings,

I have recently installed snort and barnyard2 and BASE on Debian Squeeze as per the Debian installation guide by Jason 
Weir on the snort website.  Everything was working as expected until I enabled the arpspoof preprocessor by placing the 
following line in my snort.conf file (values changed to protect the innocent)

preprocessor arpspoof_detect_host: 10.0.0.1 aa:bb:cc:dd:ee:ff

and restarted snort and barnyard.

I then launched an arpsoof attack on my network using ettercap. I believe snort is detecting the attack but I am now 
getting the following errors when I look in BASE:

/var/www/base/includes/base_cache.inc.php:776: ERROR: 
45 alerts have NOT found their way into acid_event with sid = 1

followed by the 45 alerts which look like this:

/var/www/base/includes/base_cache.inc.php:521: ERROR: Alert "1 - 42884" could NOT be found in acid_event.

This is no doubt a misconfiguration on my end somewhere.  From what I can glean by googling barnyard is not properly 
writing the events to the snort database.  

Any advice \ assitance on how I can troubleshoot this or better yet get BASE to actually display the arpspoof attack.

Thanks in Advance


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