I wonder why million of ports are getting probed every day? Could it be because of ignorant people who don't close their ports? Making their systems vulnerable to zombies that can then go out and probe another million ports.
Sometimes, ignorant people need to be scared, to get them off of their dead @sses and take some responsibility for their corner of the internet.
I agree that a port probe doesn't equal a DOS attack, but, it is an attack, none the less.
Slackers make my life difficult every day. Those ignorant souls that don't secure their email servers from relays, help fuel the mountain of spam my organization deals with every day. Those that don't secure their servers and desktops systems from zombies, just insure we'll have more Code Reds and DOS attacks.