DOS Prevention method opion

[nomi]

I just installed:
http://www.linuxforum.com/linux_tutorials/66/1.php
Do you think it is even slightly effective?

[TowerHost.com]

The only way to know would be to perform a test against your server, without and with the Apache addon. I don't have any experience with this and I'm not sure if it really works. Hopefully someone will have some better feedback than myself ;)