I have the most amount of experience with MySQL.
I'm not that familiar with security hardening, I've never used SELinux but I can learn. (Not like I have a job right now.)
I do know how to fix SQL injection/XSS/buffer overflows, etc. if I have the source, of course.
OK
I must say that I'm available 24/7, and I have a "wake up" url on my server I can give you that when accessed through your browser will try to wake me up with beeps.
(Abusing is not amusing.)
It sounds like you've had that problem before, you should set it up so that your system plays an mp3 or something haha.
Thanks for the info, I'm kind of looking for someone to help me security harden my server at the moment.