Study on defense of unstructured and uncentralized P2P network DDoS attacks
非结构去中心化的P2P网络DDoS攻击的防御研究

As unstructrured and uncentralized P2P network might be the engine of DDoS attacks, this paper proposed a theory of using AIS to isolate the malicious node from the P2P network. With AIS in a node and the nature relationship between antigens and antibodies and the continue evolution of antibodies, the node could detect malicious node by calculating the appetency of request result cycle queue of the node that returned resource information and the node'detector in real time in the unstructured and uncentralized P2P network. It did the experiment on the NS2 simulation platform by modifying the GnuSim plugin with AIS in the node of unstructured and uncentralized P2P network, and verified the model's feasibility. And the experiment indicates that the method can effectively reduce the degree of DDoS caused by malicious node in the unstructured and uncentralized P2P network.