Personal firewall day

Today is the personal fire wall day. This is an internet equivalent of a public health initiative promoted by Microsoft, Network associates, and other leading technology companies. It essentially encourages internet users to adopt firewall technology to protect themselves from online threats.
The application controls network traffic to and from a computer permitting or denying communications based on a security policy.
PersonalFirewallDay.org,is a website that deals with this.
Colloquially this means maximum thrust. Eg. He moved the throttle to the firewall
It is the term for a fireproof wall designed to prevent the spread of fire through a building or vehicle.