校园网安全系统设计

摘要

摘要

本设计简要地讨论了校园网络规划设计中涉及到的网络技术、规划设计方法、网络性能及应用分析等问题，为校园网络的规划、设计等方面在技术及应用上提供参考，以使在建或规划中的校园网络具备较高的整体性能。

随着信息技术的不断发展和人们对各种数据形式的信息需求和交流的不断增长，使得现代的计算机网络，特别是Internet从传统的数据处理设备（如计算机）和管理工具中脱离出来，担当一个非常重要的角色——信息技术的基础设施与获取、共享和交流信息的主要工具，并成为人们在当今社会生活及工作中不可缺少的组成部分。经过了几年的迅猛发展，计算机网络已经在很多方面改变了人们传统的工作和生活方式……Web浏览、E－mail、QQ（上网聊天）、VOD（视频点悉播）、文件传输、远程诊断、电子商务、网络大学及虚拟学校等无一不与计算机网络有着千丝万缕的联系。这些基于网络的各种应用，正在以惊人的速度扩展，几乎渗透了社会生活的各个方面。校园网络(CAN，Campus Area Network)与其它园区局域网络一样，由于它属于单位自有，学校拥有自我建设、自我管理和自我使用的权利，因此，受经费、技术水平及其它方面的影响，校园网络在规划设计、资源建设和应用上很不平衡，差别很大，特别是在IT界目前还未实施网络工程监理的条件下，造成了不少的人力、物力、财力的巨大浪费。

校园网络的规划设计有多种解决方案，依学校的类型规模和性质的不同，以使网络的设计方案有所不同，体现在技术、应用上更是不同。在传统的语音服务(诸如电话、蜂窝移动电话)无法满足人们的各种信息需求的今天，对图形、图像、视频等多媒体信息需求的不断增长，已成为人们依赖计算机网络进行信息共享和交流的重要资源。学校教师的教学、科研工作和学生的学习生活对一个高速的、资源丰富的和应用多方面的校园网络的需求是迫切的、必需的。也是网络规划设计者永远追求的目标。

关键词：校园网系统拓扑结构IP规划

ABSTRACT

This design is briefly discussed the campus network planning and design involved in network technology, planning and design methods, applications and network performance analysis and so on, for the campus network planning, design and other aspects of the technology and its application to provide a reference, so that in the planning or construction of the campus network with high performance.

With the continuous development of information technology and people of various data in the form of information and communication of constant growth, make modern computer network, especially the Internet from the traditional data processing equipment( such as a computer) and management tools from the out, play a very important role-- information technology infrastructure and access, sharing the main tools and the exchange of information, and become the people in today's social life and work an indispensable part in the. After several years of rapid development, the computer network has in many ways changed the traditional way of life and work ... ... Web browsing, Email, QQ ( chatting ), VOD ( video received multicast), file transfer, remote diagnosis, electronic commerce, network university and virtual schools, all with the computer network has have all kinds of connections with contact. These are based on various network applications, is at an amazing speed expansion, almost permeated all aspects of social life. Campus network ( CAN, Campus Area Network ) and other campus local area network, because it belongs to unit own, school has self construction, self management and self use rights, therefore, subject to funding, technology and other aspects of the impact, the campus network in planning and design, construction and application of resources is very lopsided, difference great, especially in the IT industry has not yet been implemented network engineering supervision conditions, resulting in a lot of manpower, material resources, financial resources huge waste.

Campus network planning and design have multiple solutions, depending on the type of school size and nature of the different, so that the network design is different, reflected in the technology, application is different. In the traditional voice services ( such as telephone, cellular phone) can not meet people's information needs today, graphics, images, video and other multimedia information needs of the growing, has