Enterprise Security — Hivemq

: They implemented "Authorization Rules." For example, a temperature sensor in a refrigerated trailer was authorized to publish data to the /telemetry/temp topic but was strictly forbidden from subscribing to the /commands/engine topic.

The ESE is the central engine for managing complex access requirements. It uses a "Pipeline" and "Realm" architecture to partition the server into protected areas with unique security schemes. HiveMQ Enterprise Security Extension (ESE) Start Up Guide hivemq enterprise security