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PROCTOR PEER FOR MALICIOUS PEER DETECTION IN STRUCTURED PEER-TO-PEER NETWORKS

  • US 20080313500A1
  • Filed: 05/29/2008
  • Published: 12/18/2008
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. A method for detecting misbehaviour of a peer node within a peer-to-peer [P2P] network governed according to predefined rules, the method comprises the following steps of:

  • a) choosing a peer node from the P2P network to act as a tester peer;

    b) sending into the P2P network a testing request message from the tester peer, that testing request message having as target the tester peer itself;

    c) analysing by the tester peer of the behaviour of the P2P network by collecting any possible response message related to the testing request message;

    d) identifying by the tester peer from received response message to the testing request message any possible discrepancy with properties governed according to the predefined rules;

    e) in case a misbehaviour is found without being able to identify the misbehaving peer node then choosing a different peer node from the P2P network to act as the tester peer and applying accordingly steps b to d;

    f) comparing the identification results obtained by the different tester peers to try to identify the misbehaving peer node and in the negative case restarts a detection procedure by choosing another different peer node from the P2P network and applying steps b to f;

    g) when identifying a misbehaviour peer node then discarding it from the P2P network in case directly by updating the predefined rules governing the P2P network.

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