An Activatable DDoS Defense for Wireless Sensor Networks

Wireless Sensor Network (WSN) has covered broad areas as a promising networking technique. The sensor nodes are facing multiple menaces, especially Distributed Denial of Attack (DDoS). Yet, existing DDoS mitigations are inadequate to be applied in WSNs due to the constrained resources. In this paper, we propose an activatable DDoS defense which is adaptable for WSNs. We design an activation mechanism to achieve the state transition of nodes with adjustable overhead. Furthermore, a probabilistic bootstrap percolation in connected Random Geometric Graph (RGG) is utilized to model the dynamic activation process. We analyze the critical threshold of phase transition theoretically and provide the proof. Finally, we numerically analyze the process and verify the theoretical results by comprehensive simulations.