Snort 2.9 on CentOS 6.3 (continued) with Barnyard2

This is a continuation of the post on installing Snort 2.9 on CentOS 6.4 (http://nkush.blogspot.com.au/2013/03/snort-29-on-centos-63.html). This post installs Barnyard2 on the host. Barnyard is an output system for Snort. If effectively allows better snort performance by enabling Snort to produce binary output which is then processed by Barnyard. Barnyard processes the binary Snort output files (unified2 binary) and stores the processed data into a database back-end, for example MySQL. The advantage of using Barnyard instead of the database output from

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