Andrew McDonald developed a comprehensive Fail2Ban configuration guide for the jellyfin/jellyfin.org repository, focusing on security hardening for upstream reverse proxy deployments. He designed the guide to enable dynamic IP blocking using custom Fail2Ban action files and SSH key-based authentication, integrating iptables management for flexible ban and unban workflows. His work included detailed documentation of updated jail configurations, restart procedures, and robust testing strategies, providing clear guidance for both operators and developers. Leveraging his expertise in Bash scripting, network security, and system administration, Andrew delivered a well-structured solution that addressed attack surface reduction and improved deployment reliability without introducing new bugs.