网络地址转换原理实验的设计与实现

Design and Implementation of Network Address Translation Principle Experiment

网络地址转换(NAT)是《计算机网络》、《组网技术》和《网络管理》等相关课程的教学重点与难点内容之一。文中介绍了网络地址转换产生的原因和原理,基于协议分析与NAT会话信息设计了实验教学内容。实验通过分析NAT会话信息,对比协议分析的结果,详细展现了静态、动态、及端口3类地址转换的原理。该实验不仅可以使学生直观、深入地理解NAT的原理,同时也增强了学生对各类协议原理及其工作过程的自我研究能力,提高了网络实验的教学质量。

Network Address Translation （NAT） is an important and difficult content of computer network, network technologies, network management, and other related courses of network engineering. This paper introduced the background and principles of the network address translation, and designed the experiment based on protocol analysis and NAT session information. By analyzing NAT ses- sion information and the results of protocol analysis, the experiment shows in detail the principle of 3 types network address translations, static, dynamic, and port-level NAT. This experiment does not only allow students to understand the principles of NAT deeply, but also enhances their self-study abilities for various protocols, improves the teaching quality of network experiment.