Comparing Chord, CAN, and Pastry overlay networks for resistance to DoS attacks

Overlay networks enable applications to communicate with users without disclosing their IP addresses; hence overlay networks are used to protect applications against DoS attacks by hiding an applicationpsilas location. This paper analyzes three popular overlay networks (Chord, CAN, and Pastry) by simulation to answer to this question: which topology is more favorable for location-hiding and resisting against DoS attacks? Simulation results show that a CAN overlay network has a better topology structure for location-hiding and resistance against DoS attacks than Chord and Pastry. Simulation results also show the topologies with low average vertex degree are favorable for location-hiding techniques.