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System and method for ARP anti-spoofing security

  • US 8,245,300 B2
  • Filed: 06/04/2009
  • Issued: 08/14/2012
  • Est. Priority Date: 05/21/2003
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • storing, by a device in a database, information from ARP Tunnel Protocol (ATP) packets received from a first subnet of a computer network;

    storing, by the device in the database, information from ATP packets received from a second subnet of the computer network;

    determining, by the device, whether a spoofed ARP reply has been received on a port of the first subnet or a port of the second subnet based on an analysis of the received ATP packets and the information stored in the database;

    wherein the ATP packets from the first subnet and the ATP packets from the second subnet include ARP reply information received on ports of network devices in the respective subnets, and wherein information in the ATP packets include information identifying a port on which a particular ARP reply was received.

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