拟态构造Web服务器的服务质量量化方法  

QoS Quantification Method for Web Server with Mimic Construction

作　　者：张杰鑫 庞建民 张铮 邰铭 刘浩 ZHANG Jie-xin;PANG Jian-min;ZHANG Zheng;TAI Ming;LIU Hao(State key Laboratory of Mathematical Engineering and Advanced Computing,Zhengzhou 450001,China)

机构地区：[1]数学工程与先进计算国家重点实验室

出　　处：《计算机科学》2019年第11期109-118,共10页Computer Science

基　　金：国家自然科学基金(61472447);国家重点研发计划(2016YFB0800104);上海市科学技术委员会科研计划(16DZ1120502)资助

摘　　要：随着新兴的“互联网+”快速成为驱动社会经济发展的重要动力,Web服务的地位越来越重要,其面临的安全问题也越来越严重。拟态构造Web服务器是一种基于拟态防御原理的新型Web防御系统,其利用异构性、动态性、冗余性等特性阻断或扰乱网络攻击。虽然其已经展开应用部署,并取得了较好的防御效果,但至今仍缺乏有效的服务质量量化评估方法。首先在分析拟态构造Web服务器系统架构的基础上,讨论其服务质量量化与传统的Web服务质量量化的区别和关键问题,分析了影响其服务质量的因素;然后基于“木桶”原理提出了拟态构造Web服务器服务质量的量化评估方法,并利用向量相似度方法量化服务质量的损耗值。文中在理论上为拟态构造Web服务器服务质量量化评估提供了一种新方法,在工程实践上为优化其服务质量提供了指导。仿真和实验结果表明,与现有的评价方法相比,提出的量化方法能够更加有效地量化评估拟态构造Web服务器的服务质量。As the emerging“Internet Plus”has quickly become an important driving force of social and economic deve-lopment,Web service plays an increasing role in society,but its security issues are worsening.The Web server with mimic construction is a new Web defense system based on the principle of mimic defense,and it uses the heterogeneity,dynamics,redundancy and other characteristics to block or disrupt network attacks.Although it has been deployed and some better defense effects have been gotten,there is still a lack of effective methods for quantifying its QoS.On the basis of analyzing the system architecture of the Web server with mimic construction,this paper discussed the difference and issues between the quantification of its QoS and the quantification of traditional Web servers’QoS,and analyzed the factors affecting its QoS.Based on the“Wood Barrel”principle,this paper proposed a quantitative evaluation method for the service quality of the Web server with mimic construction,and used the vector similarity method to quantify the loss value of the QoS.This effort provides a new method for quantifying the QoS of the Web server with mimic construction in theory,and provides guidance for optimizing its service quality in engineering practice.The simulation and experimental results show the proposed quantification method can effectively quantify and evaluate the QoS of the Web server with mimic construction compared with the existing evaluation methods.

关 键 词：WEB服务 服务质量 拟态防御 QOS属性 量化方法 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]