Towards Blockchain-Driven Network Log Management System

Log data is crucial to detect mischievous activities conducted in a computing environment. Traditional log management systems that depend on cloud and centralized storage servers are vulnerable to a single point of failure and lack transparency and trust since the adversaries tamper log records. In literature, blockchain is used to design log storage to resolve these issues. Although some solutions have been introduced, the existing works still cannot guarantee log data confidentiality, lack of efficient query mechanism, real-time implementation, and performance analysis. In this paper, we propose a blockchain-based network log data storage, query, and audit system. We have implemented and deployed the scheme in physical networking environment to collect log records. Our system ensures transparency, data accountability, and data confidentiality and incurs low overhead for performance analysis. Our work demonstrates the feasibility of blockchain to build a time-efficient log management system while ensuring the privacy of log data.