毕业设计：简论网络流量监控工具的实现（终稿）.doc

简论网络流量监控工具的实现 摘 要 互联网迅速发展的同时，网络安全问题日益成为人们关注的焦点，病毒、恶意攻击、非法访问等都容易影响网络的正常运行，多种网络防御技术被综合应用到网络安全管理体系中，流量监控系统便是其中一种分析网络状况的有效方法，它从数据包流量分析角度，通过实时地收集和监视网络数据包信息，来检查是否有违反安全策略的行为和网络工作异常的迹象。 在研究网络数据包、 TCP/IP原理的基础上采用面向对象的方法分析与设计VisualC++6.0环境下进行开发ocket-Raw、注册表和IP助手API了数据包捕获、流量监视。 Winsock2 The Design and Implementation of Monitoring and Analyzing Tool for Network Traffic Abstract With the rapid development of Internet, network safety has become people’s concern, virus, vigorous attack, illegal visit and so on can easily affect the normal network performance. Various kinds of network defending technology have been comprehensively applied into the management system of network safety. Network traffic system is one of the effective measures to analysis network condition. From the angle of analyzing packet traffic, it can examine the safety violation and the abnormal performance of network by timely collecting and monitoring packets information. By using the way of object-oriented, this design makes a needs analysis and ability designing based on the study of network packet collecting and TCP/IP theory. Under the environment of Visual C++6.0, this system adopts VC program technologies of Socket-Raw, Windows register and IpHelper API. On the basis of system analysis, it makes a deliberate analysis and test of plans and details to implement packets collecting, traffic monitoring and statistics. So this meets our needs and makes a reference for managers to get to know the network conditions. Key words: network management; data collection; traffic analysis; Winsock2 目 录 论文总页数：22页 1 引言 1 1.1 课题背景 1 1.2 网络安全管理的现状与需求 1 1.3 网络流量监控的引入 1 1.4 本文的目的与任务 2 1.5 论文结构安排 2 2 相关的概念与技术 2 2.1 OSI参考模型与TCP/IP体系结构 2 2.1.1 OSI参考模型 2 2.1.2 TCP/IP体系结构 3 2.1.3 OSI模型与TCP/IP体系结构的区别 4 2.2 传输层的编程接口—Windows套接字编程技术 4 2.2.1 Windows套接字的概念 4 2.2.2 套接字类型 5 2.2.3 涉及的几个基本概念 5 2.3 原始套接字 5 3 网络数据的采集技术分析 6 3.1 Windows下原始数据包捕获的实现 6 3.2 原始数据包捕获的关键函数 7 4 网络流量监控系统各模块的设计与实现 9 4.1 开发背景介绍 9 4.2 总体结构设计 9 4.3 流程图设计 10 4.4 各模块功能概述与