The Cooperative DDoS Signaling based on a Blockchain-based System

Driven by challenges imposed by a cooperative network defense, the Blockchain Signaling System (BloSS) is presented as an effective and alternative solution for security management, especially cooperative defenses, by exploiting Blockchains (BC) and Software-Defined Networks (SDN) for sharing attack information, an exchange of incentives, and tracking of reputation in a fully distributed and automated fashion. BloSS was prototyped and evaluated through local and global experiments, without the burden to maintain, design, and develop special registries and gossip protocols. Those evaluation results based on the local and global prototyping of BloSS highlight its effectiveness in signaling information of large-scale DDoS attacks. The world-wide scale evaluation experimenting with the interaction between Autonomous Systems' (AS) victims of a DDoS attack and ASes acting as mitigators, presented an average of 97 seconds to complete all eleven possible outcomes of the BloSS protocol, fully determining the spectrum of possible options. The reputation assessment showed that BloSS is capable of punishing malicious providers and benefiting providers by acting honestly.