Here are some tips I've found that make dealing with OSSEC rules easier.
The NoVa chapter of OWASP is meeting on 4/11. Topic: Impact of IPv6 On Your Applications.
Security Monitoring
Monitor your network.
OSSEC & Splunk: SIEM for Everyone
OSSEC combined with Splunk is a free and worthy SIEM solution. Here is an overview and high level guide to getting it up and running.