From OSSEC Wiki

Center for Internet Security Benchmark for Red Hat Enterprise Linux v1.0.5

OSSEC Policy monitor can check if a system is in compliance with the CIS Security Benchmark for Red Hat Linux. This benchmark only covers RHEL 2.1, 3.0, 4.0 and Fedora Core 1,2,3,4 and 5. Because of that, OSSEC will only test these systems according to this standard.

Understand the test

For every test that failed, you will receive an alert describing which section of the benchmark that failed. For example:

System Audit: CIS - Red Hat Linux 1.4 - Robust partition scheme - /var not on its own partition.

The above alert says that the system doesn't have a robust partition scheme as required by the section 1.4 of the benchmark.
To receive more information about each section, please visit http://www.cisecurity.org/ to download the benchmarks and learn how to solve the problem.

Downloading the Benchmark

The CIS RHEL Benchmark v1.0.5 is available at: http://www.cisecurity.org/tools2/linux/CIS_RHLinux_Benchmark_v1.0.5.pdf