关键词: 生存性, 信息系统, 多层, P2P, 虚拟化

Abstract: A new multilayer survivable architecture-CUIRASS which has continuous service ability under malfunction and intrusion situation is proposed in this paper.The architecture combines the decentralized control，service excursion and resource sharing ability of peer-to-peer overlay with the coexistence，isolation，heterogeneity ability of visualization technology to improve the survivability of information service.It applies diverse service pools to destroy the propagation of intrusion and uses visualization technology to solve the deployment problem.It defenses the DDoS attack by using customized broker nodes and enabling collaboration of broker nodes.It hides info of service nodes and destroys the attacker process of collecting information by constructing service broker layer to filter security-related information and implement overlay network routing.A dynamic survivable service mode is proposed to combine multi excursion method and use visualization to reconfigure，backup and recovery services which solve the problem of large consumption and bad real time of traditional active/backup mode and cluster mode.

Key words: survivability, information system, multilayer, peer-to-peer, visualization