【摘要】 本文分析了基于CIDF模型实现的DIDS自身存在的安全问题,提出了一种基于组件冗余思想的改进CIDF模型。该模型很好地克服了DIDS的单点失效性。通过一种设计巧妙的组件状态检测方法,克服了以往状态检测方法开销大的缺点。利用该方法实现了DIDS组件在受到攻击瘫痪后自动切换到备用组件,从而大大提高了DIDS自身的安全性。更多还原

【Abstract】 This paper analyzes the security of DIDS based on the CIDF model, and then proposes an improved component-redundancy-based CIDF model. This model resolves the single-point failure problem in DIDS. We have designed a component status detection method, which overcomes the shortcomings of high overhead of the traditional method Then we use this method to make the system automatically switch to the backup components, when it callapses after being attacked. So the security of DIDS is enhanced更多还原