System and method for demand-driven loading of rules in a...

Details System and method for demand-driven loading of rules in a... System and method for demand-driven loading of rules in a...

H - Electricity

04

L

H04L 29/02 (2006.01) H04L 12/22 (2006.01)

Patent

CA 2287258

A system and method for loading a filtering rule at a firewall. A firewall receives a packet and determines if a rule that pertains to the packet is loaded at the firewall. If a pertinent rule is found, it is implemented and the action prescribed by the rule for the packet is performed. If no pertinent rule is found, then a pertinent rule is retrieved from a source external to the firewall, and loaded at the firewall. The rule is then implemented for the packet. After the rule expires, e.g., when the user logs off, the rule is deleted from the firewall.

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