网络流量监控系统设计
摘要随着Internet的发展和互联网应用的普及，越来越多的信息资源放在了网络上，当病毒入侵、非法访问与恶意攻击一步步地干扰我们的工作与生活时，网络的安全性和可靠性显得越发重要。因此，对于能够分析网络状况、诊断网络故障，以及测试网络性能与安全性的工具软件的需求也越来越迫切。网络流量监控系统便是其中一种分析网络状况的有效方法，它从数据包统计分析角度出发，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性和网络工作异常的行为。64616
本论文设计与实现了一个网络流量监控系统，首先对网络流量监控进行简要分析，介绍了相关的TCP/IP的协议与技术，研究了如何抓包。利用原始套接字在Windows平台下实现了流量监控，主要功能包括:
1) 实现网络层抓包、并分析数据包；
2）完成网络流量的监控并用图形表示。
毕业论文关键字: 网络流量监控；抓包；数据包分析；winpcap。
毕业设计说明书（论文）外文摘要
Title network traffic monitoring system
Abstract Along with the development and the popularization of network applications, more and more information resources are put on the Internet. When the virus step by step invade our work and life,access our work and life illegally and attack them maliciously, the security and reliability of the network seem more important. Therefore, the demand of the software tools which could analyze, diagnosis and test network performance or security are more and more pressing. Network traffic system is one of the effective measures to analysis network condition. From the angle of count data packet, it can examine the safety violation and the abnormal performance of network by timely collecting and monitoring packets information.
This thesis is about design and program of a network traffic monitoring, first it briefly analyzed the technology of network traffic. Then it introduces the TCP/IP protocol and techonology, research how to capture data packet.The application using of raw sockets is based on Windows platform to realize one flow monitoring, its main function contains:
1) To achieve packet capture on network layer；
2) Complete network traffic monitoring and give a graphical representation.
Keywords: network traffic monitoring; capture data packet; analyze data capture; winpcap.
目 次
1 绪论 1
1.1 网络流量监控概述 1
1.1.1 课题背景 1
1.1.3 网络流量监控的引入 1
1.2 数据包监听原理 2
1.3 课题研究的主要内容 3
1.4 本章小结 4
2 相关技术及开发工具软件介绍 5
2.1 winpcap支持库的功能介绍 5
2.2开发工具软件及编程语言 7
2.3本章小结 8
3 相关TCP/IP的概念 9
3.1 OSI参考模型 9
3.2 TCP/IP体系结构