基于博弈理论的传感器网络拒绝服务攻击限制模型

如何有效防治无线传感器网络中的拒绝服务(Denial of Service,Dos)攻击,以保障网络设施的可用性,是一个极具挑战性的安全问题.本文在假设网络节点为理性的基础上,提出了面向重复博弈的DoS攻击限制模型.该模型通过建立攻击检测惩罚机制,来降低攻击者的攻击收益以敦促恶意节点的协作,使传感器网络最终达到一个协作的Nash均衡.仿真结果表明,通过合理选择惩戒机制参数,可以有效抵御传感器网络中的DoS攻击.

A Game Theory Based DoS Attack Resistant Model in Wireless Sensor Networks

In wireless sensor networks, how to accurately and rapidly detect Denial of Service (DoS) attacks so as to ensure the availability of network infrastructure is one of the most challenging security problems. This paper models DoS attack-resistant as a repeated-game based on such an assumption that sensor nodes are rational. The model prevents malicious nodes from attacking by establishing punishment mechanism, and impels sensor networks to reach a collaborative Nash equilibrium. Simulation results show that the devised model can effectively resist the DoS attacks by choosing reasonable configuration parameters.