Little Baby DDoS Shield MyBB Plugin

PHP DoS Shield work on a concept of different accessing time by human
visitor and bot attacker.
You can set it up minimum average time between one visitor visits and
maximum visits in minimum time.
That is main point of this code. No human visitors may never visit 90
times during 30 seconds.
But bot visitors can visit more than that. :-)
When some bot trip our trigger of time trap, our shied a error 503
header to their request
and display human readable warning message. If bot was gone shield will
automatically remove.
And it will send Alert mesages to site admin as ur setup in source code.
We record attacker's IP in a Log file under Log folder.
We use different error message with PHP brute force detector's 200
message.
We want close connection from current attack and prevent large amount
of CPU usage and Traffic flooding.

This program based on a PHP timer code which we collected from web
written by who-we-don't-remember-name. Special thanks to him/her from
here !!!

Objectives

* to prevent DoS or DDoS attack
* to prevent from Traffic Jamming
* to prevent Large amount of CPU usage