DNSv6代理技术在网络中的应用研究

Research on Application of DNSv6 Proxy Technology in Network

随着IPv6开始普及,针对IPv6地址信息不便记忆的问题,需要借助IPv6域名解析技术。为简化网络的管理,加快解析速度,提升解析效率,提高网络稳定性和安全性,文中阐述通过DNSv6代理技术建立网络中DNS客户端发送的DNSv6查询请求和DNS服务器响应的应答之间的映射关系,正确解析和转发DNSv6查询和应答报文,缓存查询结果,为用户提供域名与IPv6地址之间的转换服务。通过DNSv6代理技术还可以在DNS代理服务器上配置多台DNS服务器实现容灾功能。文中简要阐述了DNSv6代理的概念、工作原理和DNSv6三类主要查询的格式,研究了DNSv6代理技术在网络中的应用,完成了DNSv6代理特性的架构设计、相关数据表项的设计,并描述了具体的实现。

With the popularity of IPv6 ,it needs to use IPv6 domain name resolution technology to resolve the problem that it is hard to memory IPv6 address information for people. DNSv6 proxy technology provides the conversion between the domain name and IPv6 address for users by creating a mapping between the DNSv6 query from DNS client and the DNSv6 response from DNS server and forward- ing the DNS query and response between DNS client and DNS server,and caches the query results. So it is able to reach the purpose of simplifying the management of n^twork, accelerating the speed of resolution,improving the efficiency of resolution, and making the net-work more stable and safer. It also can configure multiple DNS servers on the DNS proxy server by DNSv6 proxy technology to realize disaster recovery. In this paper, the concept, operational principle of DNSv6 proxy technology and the formats of three major types of DNSv6 query are introduced briefly, the application of the DNSv6 proxy technology in the network is studied, the structure design of DNSv6 proxy feature and data tables is completed, and the concrete implementation is discussed.