I was looking for an easy to follow description of how to secure the MySQL database for you admins out there who are new to this, and maybe teach some tricks to you admins who are seasoned in this. I found this:
In this case they use FreeBSD, but I highly recommend using OpenBSD instead. The release version of OpenBSD is 3.5 currently. This new version is much improved over 3.4. OpenBSD can be downloaded freely from www.OpenBSD.com
and a good site for OpenBSD related talk is undeadly.org (which replaced the defunct deadly.org). If you need some assistance with OpenBSD generally the book "Absolute OpenBSD" is a great way to jump into the OS quickly and with measured competance. It is not rocket science.