The Department of the Navy (DON) is continuously modernizing its afloat and ashore network transport infrastructure. This Area of Interest (AOI) seeks to integrate Software Defined Networking (SDN) ca... The Department of the Navy (DON) is continuously modernizing its afloat and ashore network transport infrastructure. This Area of Interest (AOI) seeks to integrate Software Defined Networking (SDN) capabilities to further enhance transport performance, flexibility, and cyber resiliency across fleet environments.This Area of Interest (AOI) seeks a comprehensive plan for cyber hardening an SDN prototype and a strategy to support the deployment of the prototype to ashore and afloat DON sites.