局域网流量监测系统设计与实现

发布时间：2018-07-04 13:00

本文选题：局域网 + 流量监测　；参考：《山东大学》2014年硕士论文

【摘要】：从现在到可预见的未来,各机构局域网在初具规模的基础上将持续扩展,网络拓扑结构日益复杂,由网络病毒、设备故障、用户行为引起的流量异常频发甚至常态化。鉴于网络在办公管理信息化方面的基础地位不可动摇,对网络流量的监测势在必行。针对已有网络流量监测软件的功能、特性与不足,以开源软件Cacti为基础并创新性结合WebGIS进行局域网流量监测系统设计与实现。首先,明确研究背景和意义,比较分析各商业及开源网络监测软件的优劣,在总结不足、辨析发展态势的基础上理顺本文研究内容、思路及技术路线；其次,选择济宁移动公司局域网为研究对象,对其网络现状进行剖析,在此基础上进行需求分析,确定普通用户和管理员用户的不同需求,分解各功能模块；接着,利用地理信息系统和遥感技术将现实空间的网络、建筑等进行数字化,利用模型对其进行抽象；然后,运用SNMP命令采集流量等数据,收集到RRD中,编写读写代码获取RRD数据并持久化到PostgreSQL数据库,确保数据的完备性和精确性；最后,结合j Query和OpenLayers实现监控界面,PHP执行后台逻辑,将流量等数据以点-线形式一方面呈现在以GeoServer为地图服务器的空间拓扑图上,另一方面呈现在以D3为可视化库的逻辑拓扑图上,并以柱状图、饼图、折线图等方式汇总数据,显示其历史与趋势。系统仿真表明,普通用户通过此系统可以查询本端口实时、历史流量及相关数据,管理员用户通过此系统可以掌握局域网内各端口流量及相关数据,并对各类数据进行统计分析。结果验证了Cacti和WebGIS的耦合在局域网流量监测方面的实效性,通过分析流量等特征可探索用户行为,能为未来的网络设计和优化提供参考依据。
[Abstract]:From now to the foreseeable future, the local area networks of various organizations will continue to expand on the basis of initial scale. The network topology structure is becoming more and more complex, and the abnormal traffic caused by network viruses, equipment failures, user behavior and even normality. In view of the basic position of network in office management information, it is imperative to monitor network traffic. In view of the functions, characteristics and shortcomings of the existing network traffic monitoring software, the design and implementation of a LAN traffic monitoring system based on the open source software Cacti and the innovative combination of WebGIS are presented. First of all, clear the research background and significance, compare and analyze the advantages and disadvantages of various commercial and open source network monitoring software, and straighten out the research content, train of thought and technical route on the basis of summarizing the deficiency and discriminating the developing situation. The local area network of Jining Mobile Company is selected as the research object, and the present situation of the network is analyzed. On this basis, the different needs of ordinary users and administrator users are determined, and the functional modules are decomposed. Using GIS and remote sensing technology to digitize the real space network, architecture and so on, using the model to abstract it, then, using SNMP command to collect the data, such as traffic, to collect into the RRD. Write read and write code to get RRD data and persist to PostgreSQL database to ensure the completeness and accuracy of the data. On the one hand, the traffic data is presented in the form of point-line, on the one hand, on the spatial topology map with GeoServer as the map server, on the other hand, on the logical topology diagram with D3 as the visual library, and the data is summarized in the form of histogram, pie chart, broken line diagram and so on. Show its history and trend. The system simulation shows that ordinary users can query the real-time, historical flow and related data of this port through this system, and administrator users can master the flow and related data of each port in LAN through this system. And statistical analysis of all kinds of data. The results verify the effectiveness of the coupling of Cacti and WebGIS in local area network traffic monitoring. By analyzing the characteristics of traffic, we can explore user behavior and provide a reference for future network design and optimization.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.06;TP393.1

【参考文献】