大写毕业设计-论计算机网络安全与防护.doc

论计算机网络安全与防护 摘 要 网络安全从其本质上来讲就是网络上的信息安全，网络安全涉及的内容有三个方面：包括安全管理、安全技术、安全设备。从技术上来说，网络安全由安全的操作系统、应用软件、防火墙、网络监控、通信加密、灾难恢复、安全扫描等多个安全组件来保证的。 本文首先从网络安全和防护的定义入手，阐述了关于网络安全与防护工作在国际和国内的发展现状，使读者从总体上对这门学科有了初步的认识。 其次对经典常见的网络攻击行为和不安全因素进行了深度的剖析，分析了其工作的原理，并提出了对其防护的可行性和有效性的建议。 最后通过对这些不安全因素的剖析，提出了当今社会比较突出的解决方法，并逐一分析了他们实现的工作原理，以及深入了解其工作的过程。 关键词：网络安全，防火墙，网络防护 Computer Network Security and Protection Research Abstract Essence of network security on the network information security , About the content of network security has three aspects: Including the Safety Management, Security technology, safety equipment. Through technically, Network security from the safety of the operating system, application software, firewalls, network monitoring, communication, encryption, disaster recovery, Security scanning and other security components to guarantee. In this paper, network security and protection from the definition of the beginning，Elaborates on the network security and protection work in the development of international and domestic situation，So that readers in general, this subject had an initial understanding. Second, the classical behavior of common network attacks and insecurity in-depth analysis of the factors，Analysis of the principle of its work and put forward the feasibility and effectiveness of its protective recommendations. The final adoption of the analysis of these factors of insecurity,Made more prominent in todays society a solution, And to analyze the working principle of their realization, as well as in-depth understanding of their work process. Key word : Network Security Firewall Network Protection 目 录 1 绪论………………………………………………………..………………..…………….4 1.1 课题背景及目的……………………………………………………………………4 1.2 国内外研究状况……………………………………………………………………4 1.3 论文构成及研究内容………………………………………………………………6 2 网络攻击行为技术特点分析……….…………………………………………………...6 2.1 拒绝服务DoS……………..………………………………………………………..5 2.1.1 淹没…………………………………………….…………………………...5 2.1.2 Smurfing拒绝服务……….………………………………………………...6 2.1.3 分片攻击……………………………………….……