This article assumes you already have OSSEC deployed. If you need a refresher, refer to the Part I of OSSEC for website security, written March 2013.
OSSEC is popular open-source Host Intrusion Detection System (HIDS). It was founded by Daniel Cid, and currently maintained by a very large community of security professionals. Please note that I don’t my installations off the official repo, instead I run directly off Daniel’s repo (instructions in the last post).
In the following series I’m going to share the foundational elements of my OSSEC deployments. We’ll start by placing emphasis on the importance of deploying a distributed architecture in this article, making use of the Agent / Manager options. In future articles you can expect insights into the best way to configure for CMS applications like WordPress, tuning the engine to make use of the alerts, and notifications.
If you have questions, don’t hesitate to ask.