ust to add a serious re-reply in this thread.
If you're interesed in this type of functionality, consider getting Atomic Secured Linux.
http://www.atomicrocketturtle.com/Jo...t/view/137/34/
It's very, very affordable [think $130], runs in the *kernel* layer, [as opposed to php - muffled giggles], and will protect you from ddos to sql injection.
I happen to know the guy who writes it - his credentials include 5 years in the whitehouse heading digital security.
'Onlineriches' credentials? who knows...