一种基于CORBA分布式对象的容侵恢复策略

Heterogeneous Recovery Strategy Based on CORBA for Intrusion Tolerant Distributed Object System

基于分布式对象容忍入侵系统的研究是入侵容忍的研究热点之一。国内外对分布式对象容忍入侵系统架构方面已做了一定的研究,但均未侧重于系统中对象恢复策略。该文在研究SITAR模型的基础上提出了一种基于CORBA中间件分布式对象容忍入侵系统的模型,在该模型下提出了分布式对象的对象恢复策略,和传统恢复策略相比,该恢复后的对象对原来的入侵攻击在某种程度上有一定的免疫力。通过一个实例验证了恢复策略,结果表明它可使对象向前恢复到正确结果。

Distributed object based intrusion tolerant system （ITDOS） has become one of the attractive issues on intrusion tolerance. There have been many significant researches on the model of a heterogeneous intrusion tolerant distributed object system, but few of them focus on distributed object recovery strategy. This paper presents a model of ITDOS based on middleware, CORBA, which is based on the researches of the SITAR model, and presents a recovery strategy for ITDOS in this model. The objects, recovered by the recovery strategy, can resist the attack of the last to some extent. It is validated by experiment that the strategy correctly performs forward recovery.