Issues with webserver setup

I had some issues with my webserver setup, especially regarding the b2evolution portion of my site.

I'm using the version that comes as a Gentoo E-Build, and it had worked fine for a while. Lately however someone has been trying to mess with it, likely through an automated script by overflowing inputs and probing for vulnerabilities.

I apparently did not have the server set up very well, since this let the cpu usage climb up to nearly one hundred percent and consume all available memory.