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《网络攻击和防御技术研究》-毕业论文.doc

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PAGE PAGE III 毕业设计(论文) 题 目: 网络攻击和防御技术研究 学 院: 计算机科学学院 专业班级: 计算机科学与技术07级2班 指导教师: 王春玲 职称: 副教授 学生姓名: 校婷 学 号: 40709010230 I 摘 要 网络在人类社会生活中的应用越来越广泛和重要,Internet已经把人们的学习、工作和生活紧密地联系在一起,但其中潜在的安全问题也越来越严峻,各种攻击手段层出不穷。其中拒绝服务攻击以其攻击范围广、隐蔽性强、简单有效、破坏性大和难以防御等特点成为最常见的网络攻击技术之一。尤其分布式拒绝服务攻击其破坏性更大,严重威胁着Internet的安全,受到这种攻击的损失是无法计量的。为其建立有效的防御机制是当前维护网络安全的重要目标之一。 本次毕业设计的主要工作是研究网络攻击与防御技术,并在此基础上重点研究分析拒绝服务攻击,并对其防御策略进行研究。主要研究成果如下: 研究计算机网络攻击与防御的原理与技术。 研究网络安全现状、发展趋势,常见网络攻击方法以及典型网络攻击技术。 在上述研究基础上,主要研究拒绝服务攻击,详细分析研究了SYN Flood攻击、Smurf攻击、Teardrop攻击等拒绝服务攻击的原理和防御策略。 在对拒绝服务攻击分析研究的基础上,采用Java多线程技术实现对某个网站的SYN Flood拒绝服务攻击并分析了其防御方法。 关键词:拒绝服务攻击,防御策略,SYN Flood,Smurf,Teardrop ABSTRACT Network in human social life, more and more extensive and important, Internet has been the peoples learning, working and living closely together, but potentially more serious security issues, all kinds of attacks one after another. Denial of service attack in which a wide range of its concealment and strong, simple and effective, destructive, and so large and difficult to defend the most common network attacks technologies. In particular, the distributed denial of service attacks more damaging, a serious threat to the security of Internet by the loss of such attacks can not be measured. Defense mechanism for the establishment of effective maintenance of network security is currently one of the important goals. The main graduation work is to study the network attack and defense techniques,and focus on research and analysis on the basis of denial of service attacks, and to study their defense strategy.The main results are as follows: Study of computer network attack and defense of the principles and techniques. Study of network security situation, development trends, common network attack methods and techniques typical of network
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