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Dynamically adaptive network firewalls and method, system and computer program product implementing same

  • US 8,032,933 B2
  • Filed: 10/15/2009
  • Issued: 10/04/2011
  • Est. Priority Date: 03/10/2004
  • Status: Expired due to Fees
First Claim
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1. A method for constructing a dynamically adaptive network firewall, comprising:

  • establishing a firewall model for the firewall, wherein the firewall model defines nodes, connections between the nodes, and firewall rules applicable to the nodes, to the connections between the nodes, or to a combination thereof, wherein each of the nodes represents simultaneously a source and a destination for data packets, wherein the firewall rules in the firewall model implementing a hierarchical structure and comprise dynamic chains of rules forming various paths through the hierarchical structure, and wherein the dynamic chains comprise defined places for functional extensions to the hierarchical structure;

    implementing the firewall on one or more machines connected to network segments where the nodes reside; and

    dynamically inserting at least one firewall rule at one of the defined places in the hierarchical structure while the firewall is processing traffic through the one or more machines.

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