Distributed and control theoretic approach to intrusion detection

  • Authors:
  • Rahul Khanna;Huaping Liu

  • Affiliations:
  • Intel Corporation, Hillsboro, OR;Oregon State University, Corvallis, OR

  • Venue:
  • IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
  • Year:
  • 2007

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Abstract

Ad hoc wireless networks are more vulnerable to malicious attacks than traditional wired networks due to the silent nature of these attacks and the inability of the conventional intrusion detection systems (IDS) to detect them. These attacks operate under the threshold boundaries during an intrusion attempt and can only be identified by profiling the complete system activity in relation to a normal behavior. In this paper we discuss a control-theoretic Hidden Markov Model (HMM) strategy for intrusion detection using distributed observations across multiple nodes. This model consists of a distributed HMM engine that executes in a randomly selected monitor node and functions as a part of the feedback control engine. This drives the defensive response based on hysteresis to reduce the frequency of false positives, thereby avoiding inappropriate ad hoc responses.