Coupled kermack-mckendrick models for randomly scanning and bandwidth-saturating internet worms

  • Authors:
  • George Kesidis;Ihab Hamadeh;Soranun Jiwasurat

  • Affiliations:
  • Department of Electrical Engineering, Department of Computer Science and Engineering, Pennsylvania State University, University Park, PA;Department of Computer Science and Engineering, Pennsylvania State University, University Park, PA;Department of Computer Science and Engineering, Pennsylvania State University, University Park, PA

  • Venue:
  • QoS-IP'05 Proceedings of the Third international conference on Quality of Service in Multiservice IP Networks
  • Year:
  • 2005

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Abstract

We present a simple, deterministic mathematical model for the spread of randomly scanning and bandwidth-saturating Internet worms. Such worms include Slammer and Witty, both of which spread extremely rapidly. Our model, consisting of coupled Kermack-McKendrick equations, captures both the measured scanning activity of the worm and the network limitation of its spread, i.e., the effective scan-rate per worm/infective. We fit our model to available data for the Slammer worm and demonstrate its ability to accurately represent Slammer's total scan-rate to the core.