摘要随着互联网的普及和国内各高校网络建设的不断发展，目前高校大多建立了校园网，它己经成为高校信息化的重要组成部分随着教育信息化的发展，计算机校园网络系统成为学校重要的现代化基础设施，为学校建设提供安全、可靠、快捷的网络环境，学校的学生思想教育教学、科研、管理等对网络的依赖将越来越紧密。校园网的安全状况直接影响到这些活动的顺利进行，因此，保障校园网络信息安全已经成为当前各高校网络建设中不可忽视的首要问题。本文系统地介绍了网络安全的概念、讨论了校园网目前面临的各种安全威胁。本文针对校园网的建设目标，列出了应对校园网络安全的关键技术，并结合校园网的特点详细论述了校园网安全防御的实现和措施，包括防火墙的设置，身份认证和数据加密，入侵检测，物理专用隔离网等等。最后本文分析了实际相关案例使技术与实际应用相结合，说明基于校园网网络信息安全的运行模式和过程。关键词：校园网；网络安全；防火墙；入侵检测AbstractWiththepopularizationofInternetandtheconstructionofCollegeNetworkunceasingdevelopment，thecurrentmostuniversitiesestablishedacampusnetwork，ithasbecometheimportantcomponentofuniversityinformationwiththedevelopmentofeducationalinformationization，campuscomputernetworksystemhasbecometheschoolimportantmoderninfrastructure，forschoolconstructiontoprovidesafe，reliable，fastnetworkenvironment，schooltheideologicaleducationofstudents，teaching，scientificresearch，management，relyonthenetworkwillbemoreandmoreclosetogether.Campusnetworksecuritystatusdirectlyaffectstheactivitiescarriedoutsmoothly，thus，securityofcampusnetworkinformationsecurityhasbecometheuniversitynetworkimportantissuecannotbeignored.Thispapersystematicallyintroducestheconceptofnetworksecurity，discussesthecampusnetworkfacesvarioussecuritythreats.Inthispapertheconstructiontargetofcampusnetwork，campusnetworksecurityislistedwiththekeytechnology，andcombiningthecharacteristicsofthecampusnetworkisdiscussedindetailandtherealizationofthecampusnetworksecuritydefensemeasures，includingfirewallsettings，identityauthenticationanddataencryption，intrusiondetection，physicaldedicatednetworkisolationandsoon.Finally，thispaperanalysestheactualcases，thetechniqueandthepracticalapplicationofthecombination，basedonthecampusnetworksecuritysystemandprocess.Keywords:campusnetwork；networksecurity；firewall；intrusiondetection目录第一章前言..................................................................1第二章校园网网络概述........................................................22.1计算机网络的发展与安全现状......................................22.1.1计算机网络的发展........................................22.1.2网络安全的现状..........................................32.2校园网简介...........................................................................................................42.2.1校园网概念及其问题...........................................................................42.2.2校园网发展趋势...................................................................................52．3校园网的网络构成...........................................................................................52.3.1校园网网络体系结构概述...................................................................52.3.2校园网系统功能构成...........................................................................62.3.3校园应用管理平台...............................................................................72.3.4典型校园网拓扑结构......................................
