The books real-world configurations and supporting materials will enable you to deploy Nagios and integrate other tools (like MRTG and Snort) on a helpful step-by-step basis. Integrating Nagios with a variety of other tools can add more functionality to its internal monitoring and alerting capabilities. The book covers additional topics like security, redundancy and failover, and plug-in development. And it shows you how to create your own Nagios plug-ins, to monitor devices for which Nagios may not provide plug-ins.