The Research Of WEB Security Gateway Performance Optimization Technology

In recent years,with the rapid development of WEB applications,attacks against WEB applications are endless and traditional firewalls are not enough to deal with these WEB attacks.Therefore,the demand for WEB security gateways by countries and enterprises has been increasing year by year.WEB application is sensitive to transmission delay,therefore,the performance of WEB security gateway also has higher requirements,but the WEB security gateway needs in-depth testing of data packets,which greatly limits the performance of WEB security gateway.Therefore,it is of great significance to study the WEB security gateway Performance optimization technology.Based on the large variety of WEB security gateways currently on the market,in order to provide general optimization techniques,this thesis makes an in-depth study from the two aspects of rule optimization and cache optimization,and gives specific optimization solutions.First,it optimizes WEB security gateway rules.This thesis gives the definition of the rules of the WEB security gateway and the definition of the relationship between the rules,and puts forward the WEB security gateway rules conflict detection model.In this thesis,this paper studies the conflict detection of URL rule items in detail,and propose the URCRD algorithm of segment URL rule item conflict detection based on the structure of URL.Through contrast experiments,it is proved that the URCRD algorithm of segment URL rule conflict detection has the advantages of small space consumption,high accuracy,efficient collision detection of URL rule items,and it has enhanced rule set quality and improved performance of the WEB security gateway.Second,it optimizes the WEB security gateway cache.This thesis fully considers the locality of WEB access,and introduces the two factors of URL similarity and page content similarity into the WEB cache object saving value calculation formula.In order to speed up the processing speed of the cache pollution problem,the two factors introduced are calculated respectively.The UCIHybrid algorithm based on the similarity of URL and the similarity of the page content is proposed.Through contrast experiments,it is proved that the UCIHybrid algorithm based on the similarity of URL and the similarity of page content has higher hit ratio and cache performance under the condition of large cache space,and improves the performance of WEB security gateway.