MQTT is a lightweight messaging protocol that utilizes publish and subscribe operations to exchange data between clients and a server, also known as a broker. MQTT was designed for lightweight devices, like mobile devices and embedded systems, operating on minimum network throughput. Developed specifically for Machine to Machine (M2M) and Industrial Internet of Things (IIOT) environments, the MQTT Protocol Adapter paired with Owl data diodes provides a secure, hardware-enforced transfer of MQTT messages across network boundaries. Although MQTT is inherently a two-way communication protocol, data diodes create an air gap at the network boundary to provide secure, one-way transfers of MQTT messages, physically preventing threats from entering back into the IIoT or OT network. The MQTT Protocol Adapter securely transfers MQTT messages, in real-time, through a data diode to verified subscribers.
