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Packet flooding defense system

DC CAFC
  • US 6,789,190 B1
  • Filed: 11/16/2000
  • Issued: 09/07/2004
  • Est. Priority Date: 11/16/2000
  • Status: Expired due to Term
First Claim
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1. A packet flooding defense system for a network comprising a plurality of host computers, routers, communication lines and transmitted data packets, said system comprising:

  • at least one firewall, said firewall comprising;

    hardware and software serving to control packet transmission between said network and a host computer connected to an internal network;

    means for classifying data packets received at said firewall;

    means for associating a maximum acceptable transmission rate with each class of data packet received at said firewall;

    means for said firewall to find information for packets it receives regarding the path by which said packets came to said firewall; and

    whereby, said firewall can use said information to allocate the transmission rate for each class in a desired way.

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