基于信任和风险评估的异构无线网络安全模型

由于现有的信任模型仅针对应用,并没有引入风险评估,不能适应新的网络环境特点,而异构无线网络环境由于具有异构性、开放性、动态性和适应性的特点,适合新环境下的系统网络安全需要.提出一种主动安全模型,从分析安全的保护机制出发,基于服务提供者和请求者的不同角度,引入网络风险评估和用户历史交互行为的信任评估,动态地为系统资源提供主动保护能力,以提升安全性.通过仿真实验得出,模型能够在恶意攻击增加情况下,及时识别风险,并正确有效地预测实体行为,保持良好运行状况,为下一步系统决策提供保障.

Heterogeneous wireless network security model based on trust and risk assessment

The existing trust models only for applications, because of the lack of risk assessment, can not adapt to the new network environment characteristics. The heterogeneous wireless network environment due to the heterogeneous, open, dynamic and adaptive characteristics, can suit the system network security needed for the new environment. A proactive security model is proposed to analyze the security protection mechanism based on different perspectives of service providers and requestors. The trust evaluation network risk assessment and user interaction behavior history are given to dynamically provide an active protection for the system resources. Through simulation results, the model can be effective in the case of malicious attacks, to identify risks promptly, correctly predict physical behavior effectively and maintain good health, and to provide the protection for the next system decision.