Abstract
The Internet Domain Name System (DNS) provides domain name resolution services for Internet applications and is a vital infrastructure of the Internet. The security of DNS has always been a hot issue in network security research. Traditional research work mainly improves the security protection capabilities of the DNS system by designing security-enhanced protocols. However, frequent DNS security incidents in recent years have shown that simply improving the DNS protocol cannot completely eliminate the security threats faced by the DNS system. Decentralization of DNS is a novel idea to improve the security capability of DNS system. Unlike traditional solutions, DNS decentralization technology is dedicated to changing the architecture of the DNS system and the domain name resolution process. This article analyzes and summarizes representative research work in the past 20 years for DNS decentralization technology, and discusses the development trend of future research.
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