校园网安全系统的设计与实现学位论文.docVIP

目录 摘要 I Abstract II 1.绪论 1 1.1选题背景 1 1.2选题目的 1 1.3本文组织结构 1 2.可行性分析 2 2.1 社会可行性 2 2.2 技术可行性 2 2.3 操作可行性 2 2.4 系统开发平台及运行环境 2 2.4.1 系统开发工具及平台 2 2.4.2 运行环境 2 3.校园概况和网络拓扑 3 3.1校园基本构造 3 3.2校园组成机构 3 3.3网络体系结构 3 3.4 网络拓扑总图 4 4.网络安全基础 5 4.1网络安全的定义 5 4.2网络安全的属性 5 4.3网络信息安全因素 6 4.4网络信息安全机制 6 5.安全需求与安全目标 8 5.1 网络安全需求 8 5.2 网络安全策略 8 5.3 系统安全目标 8 6.网络访问安全 9 6.1 VPN 概述 9 6.1.1 VPN简介 9 6.1.2 VPN的特点与应用 9 6.2 路由器实现VPN 9 7.Cisco安全设备 12 7.1 防火墙设计 12 8.网络攻击与防范 16 8.1黑客攻击手段 16 8.2.1 “ARP攻击”的方式和原理 16 8.2. 2 利用“ARP 欺骗”入侵实际操作 17 8.2.3“ARP攻击”防范方法 19 9.结论 21 参考文献 22 致谢 23 摘要 随着网络技术蓬勃发展ARP欺骗、MAC欺骗等。本设计方案通过模拟设计环境，使用虚拟机Vmware实现了模拟黑客进攻和被攻击者的防御手段。希望能对校园网的安全管理有所帮助，为师生创造一个安全、高效、干净的上网环境。 关键词VPN；HSRP；OSPF Abstract With the vigorous development of network technology, the rapid development of the campus network and popularization, daily work to school for learning and management also play an important role. But important, along with the network popularization, the security issues are becoming increasingly prominent. How to make the campus network normal and efficient operation and make full use of its teaching, management and service, and other functions, has become a problem cannot be ignored. This design focuses on analyzing the now existing in the campus network security problems, puts forward the theoretical and practical basis, and in the light of the network equipment safety and network access security are described, design a safe, convenient network management plan, which involves technology have VLAN,STP, VTP, HSRP, the ARP deception, MAC cheat, etc. This design scheme through the simulation design environment, use the virtual machine Vmware realize the hacker attacks and the simulation by an attacker defenses. In hopes of campus network security management help, for the teachers and students create a safe, efficient and clean the Internet environment. Keywords：Network securitySwitches;VPN;HSRP;OSPF 1.绪论 1.1选题背景 经过多年的信息化建设之后，我们国内大多数高等院校基本上都建成了自己的校园网。但随着其应用的深入，校园网络的安全性和可靠性也成为院校领导共同关心的问题。校园网络