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Coordinated detection of a grey-hole attack in a communication network

  • US 8,806,633 B2
  • Filed: 08/22/2011
  • Issued: 08/12/2014
  • Est. Priority Date: 08/22/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving, at a security device in a communication network, a first set of one or more unique identifications of packets sent by a first device to a second device for which a corresponding acknowledgment was purportedly returned by the second device to the first device;

    receiving, at the security device, a second set of one or more unique identifications of packets received by the second device from the first device and acknowledged by the second device to the first device;

    comparing the first and second sets of unique identifications; and

    determining whether acknowledgments received by the first device were truly returned from the second device based on whether the unique identifications in the first and second sets exactly match and the sets include an equal number of unique identifications, wherein the unique identifications are hashes of the packets.

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