Modeling and Simulation of Worms and Mitigation Techniques
Internet worm attacks have become increasingly more§frequent and have had a §major impact on the economy, making the detection and§prevention of these attacks a top §security concern. Several counter-measures have been§proposed and evaluated in recent §literature. However, the effect of these proposed§defensive mechanisms on legitimate competing traffic§has not been analyzed. §This book presents a comparative analysis of the§effectiveness of several of these proposed mechanisms,§including a measure of their effect on normal web§browsing activities. §This book also presents a study of the behavior of§TCP based worms in MANETs. §We develop an analytical model for the worm spread of§TCP worms in the MANETs environment that accounts for§payload-size,§bandwidth-sharing, radio range, nodal density and §several other parameters speci c for MANET§topologies. We also present numerical solutions for§the model and verify the results using§packet-level simulations. The results show §that the analytical model developed here matches the§results of the packet-level simulation §in most cases.