Blockchain-Enabled DNS: Enhancing Security and Mitigating Attacks in Domain Name Systems
Kaushal Arvindbhai Shah, Mukti Padhya, Sachin Kumar Sharma · 2023
The importance of Internet security is increasing as businesses expand through digitalization. Like in the physical world, data transmitted over the Internet must be safeguarded to ensure confidentiality, integrity, and availability. Among the various security threats, Distributed Denial-of-Service (DDoS) attacks are widely recognized as they can potentially compromise all three aspects of data security. Despite several attempts to address these attacks, the traditional Domain Name System (DNS) has struggled to counter them effectively. In this research, we propose the concept of a Blockchain-based DNS as a solution to mitigate DNS-related threats, particularly DDoS attacks. The suggested architecture encompasses all levels of the DNS, including registrars, intermediaries (if any), and clients. By leveraging the decentralized nature of blockchain technology, this approach provides a fundamental defense against DDoS attacks, as it eliminates the vulnerability of a single point of failure. Furthermore, this work explores the appropriate type of blockchain to be used, estimates the cost of implementing such a service, and offers flexibility for organizations to adopt this solution at their discretion.