文档介绍：摘要华北油田采油四厂信息网是以数据通信为基础的计算机综合信息网,它建立了跨行业、跨部门的公用计算机信息交换平台,实现了信息通信和资源共享,面向全厂提供网络服务和信息服务。经过几年的努力,我厂的企业信息网络已经具备了~定的规模,融合了各种数据通信技术,骨干网络和石油股份公司的带宽不断增加,网络节点遍布全油田: 可以向管理及专业技术人员提供包括原油生产、供应、人事、劳资、计划统计在内的多种信息,接入、信息服务、电子商务等服务。企业信息网已经成为我厂原油生产的重要管理工具。在上述业务迅速发展壮大的同时,一个不得不面对的问题就是:网络安全成为关系到企业生死存亡的重大因素。本文,我以”增强的经典安全模型“为安全体系框架,构建一个完整的安全体系。相对于经典安全模型,增强的经典模型采用大量的先进技术对经典模型进行强化和补充,特别是引入审核、检测、响应机制, 使系统具备动态的安全特性,并在系统中增加了灾难的预防和恢复措施。同近来比较流行的强调动态安全特性的模型相比较,系统由于强化了经典安全机制,使系统的安全性更加稳固。关键词:网络安全、经典模型、安全机制 Abstract work intheFourth OilProduction Factory,North China 0ilfield is puter work on munication, which puter information exchange terrace ofdifferentprofession and department;plishes munication and resource sharing. provides thewhole factory work serviceand information service. Atier several years ofhard work,the Enterprise work of otlr factory hasbegun munication technique. Band breadth of work and Petroleum increases work node spreads all over thewhole can provide the administrative personnel andspecialized technical personnel not only with various information including crude oilproduction,supply,personnel matters,laborand capital, planand statistics,but also with connection,Interact information service, merce hasalready e allimportant managemerit toolforthe oilproduction in our factory. Inthequickdevelopment ofabove business,a problem appears atthesame time: work safety es significant factorrelated toⅡleenterprise text sets up acomplete safesystem based on such safesystem frameas”enhanced classic safemode,’.Compared to classic safe mode。enhanced classic safemode strenglhens and reinforces theclassicmode tomake thesystem safe characteristic by adopting large quantity ofadvancedtechniques and especially introducing auditing,examination andrespondent mechanism,and disasterprevention and recover measure pared witll recent popular modes thatemphasize dynamic safecharacteristic,system safety has been strengthen beca