虚拟网络环境下域名系统原理综合实验设计  

Experimental Design for Principle of DNS Based on Virtual Network Environment

作　　者：曹雪峰[1] 于万国[1] 陈日升[1] 

机构地区：[1]河北民族师范学院数学与计算机系,河北承德067000

出　　处：《实验室研究与探索》2017年第5期97-100,121,共5页Research and Exploration In Laboratory

基　　金：国家民委高等教育教学改革研究项目(15114);河北省高等学校科学技术研究项目(ZC2016116);河北民族师范学院科研项目(201406)

摘　　要：介绍了域名系统(DNS)工作原理,采用GNS3和VirtualBox构建私有根域名系统实验环境,设计了DNS工作原理的实验方案,配置了WWW服务器、接收和发送邮件服务器。利用Wireshark协议分析软件捕获报文,通过对报文进行分析,阐述了DNS中递归查询和迭代查询算法的工作过程,说明了起始授权记录、名称服务器、主机记录和邮件交换等资源记录的作用,并对DNS欺骗的原理进行说明。验证了DNS的工作过程,使学生从理论和实践两方面更好地理解DNS的工作原理,增强了实践动手能力和综合应用能力。This paper introduces the principle of the DNS,and uses GNS3 and VirtualBox to build an experimental environment for the domain name system of private service. It also designs the experimental scheme of the DNS,and configures the WWW server and E-mail server. Using Wireshark is used to capture and analyze packets,the principle of the recursive query and iterative query is then introduced,the effects of the SOA record,NS record,A record,MX record and the principle of spoofing DNS are all explained,and the DNS work process is verified. The experiment lets the students better understand the working principle of DNS from both theory and practice. It enhances the practical ability and the comprehensive application ability of students.

关 键 词：域名系统 递归查询 迭代查询 资源记录 域名系统欺骗 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]