A Survey Of Web System Vulnerability And Evaluation Based On Stochastic Petri Nets

Currently, people rely more and more on computer networks.In the applications of computer networks security, assessment of network's vulnerability is more and more important.This paper is involved:1. Based on introducing of a Web site's toplogy and deployment,this paper provide a complete overview on stochastic Petri nets and stochastic Petri nets models.2. A general Web site is modeled with SPN.for SPN models are isomorphic to Markov chains, we figure out some network vulnerability parameters.3. With analysis and study with the parameters, the relationship of the Web site's performance and its failure rate repaire rate are shown with a pictorial diagram, And provide suggestion of design deployment installation and management a Web site.4. In the end of paper, the existing problems and applications of SPN are concluded, potential research of computer networks security are also indicated.