Abstract
DNS provides name resolution services for Internet applications and is an important infrastructure of the Internet. The domain name system is the core infrastructure of the Internet, which is responsible for the composition of irregular digital sequences Internet protocol address (IP) and highly readable domain names are converted to each other, which is an important prerequisite for maintaining the normal operation of the Internet. The domain name system provides domain name to IP address translation. DNS system was designed to run in a trusted environment at the beginning, but now the complex Internet environment makes the vulnerability of DNS protocol appear.
This paper briefly describes the current situation of the Internet and the domain name system. By analyzing the current situation of the domain name system, the structure of the IPv6 domain name system and the development of DNS related technologies, it concludes that DNS Security issues are not limited to “vulnerability” or “harassment”, but have a clear strategic and systematic nature, and have become one of the focuses of unprecedented struggle and competition, that is, “whoever controls DNS will own the Internet”. At the same time, this paper also summarizes the latest research achievements in DNS protocol design and system implementation, and prospects the possible hot research directions in the future.