A Survey on DDoS Mitigation Using Blockchain

Abstract

Blockchain is a digital tracker that maintains instant and permanent records validated across a specific chain of computers. This process makes it easy to spot fraudulent behavior, making the transaction more secure. Hence it is very much important to ex plore on such emerging technologies which will be essential for applications such as Smart Property, Smart Contracts, Internet of Things, Financial Services etc. At- tacks like Distributed Denial-of-Service (DDoS) pose a growing threat to computer networks and internet services. Existing strategies for mitigating DDoS attacks are inecient because of lacking resources and inexibility. Blockchains like Ethereum enable new ways to prevent against DDoS attacks:  Using  smart contracts, IP addresses of attackers can be signalized without additional infrastructure. The exponential increase of traffic volume makes DDoS attacks a top security threat to service providers and addressing this is the crux of Blockchain Technology. Bitcoin has been the most popular cryptographic currency since it was invented  and  it  is  the  best  example  that uses the Blockchain technology. To avoid an attack, the network uses the Blockchain consensus which addresses various algorithms such as Proof-of-Work(PoW), Proof-of-Stake(PoS) etc. This seminar work focuses on studying how Blockchain  can be used as a Security Mechanism to prevent Ddos Attacks which may also provide insights for implementation of certain applications.