Okay, first my dumb question, what are the differences and similarities between ping -f and denial of service attacks?. Second question: If they are the same, shouldnt my firewall (outpost) block the attacks? The reason I ask is this, a couple days ago, I decided to test my firewall myself, so I set two of the computers on my lan to ping -f my workstation that connects it to the internet. Outpost completely locked up, and I had to close it in task manager. Could this be used against myself and other outpost users to cicumvent the firewall?