Mapping Amazon ALB Access Logs to OCSF Framework

This technical report focuses on the process of mapping Amazon Application Load Balancer (ALB) access logs to the Open Cybersecurity Schema Framework (OCSF). The report outlines the challenges associated with this mapping, such as the log format and regional bucket policies. It explains that ALB access logs provide detailed information about requests, including source IP, outcomes, and payload sizes, which are valuable for performance monitoring and security analysis. The document details the anatomy of ALB access logs and discusses the Extraction, Transformation, and Loading (ETL) process to convert these logs into OCSF format. Additionally, it presents prerequisites for executing the mapping process, including software requirements and installation instructions. The report aims to assist organizations in extracting more value from their ALB logs, thereby enhancing their capabilities in incident response, threat hunting, and security analytics.