The HART protocol is a global standard for sending and receiving digital information across analog wires between smart devices and control or monitoring systems. More recently, this protocol standard has been extended to include communication across wireless mesh network (WirelessHART) as well as IP networks (HART-IP). It is an Industrial Control System (ICS) or Supervisory Control And Data Acquisition (SCADA) protocol.

This SonicWALL signature identifies legitimate HART-IP network traffic.