Andrew McDonald developed a comprehensive Fail2Ban configuration guide for the jellyfin/jellyfin.org repository, focusing on security hardening for upstream reverse proxy deployments. He addressed IP blocking by detailing SSH key-based authentication, custom Fail2Ban action files for dynamic iptables management, and updated jail configurations. His work included clear documentation of restart procedures and thorough testing workflows to validate ban and unban functionality. Using Bash and Markdown, Andrew provided actionable guidance for both operators and developers, reducing the attack surface and improving deployment reliability. The depth of his contribution lies in its practical application and clarity, supporting robust system administration practices.