Detecting Modbus Protocol Anomalies When to Use - When deploying Modbus-specific intrusion detection in an OT environment - When building baseline models for deterministic Modbus polling patterns - When investigating suspicious Modbus traffic flagged by OT monitoring tools - When implementing function code allowlisting on industrial firewalls - When detecting unauthorized Modbus write commands that could manipulate process setpoints Do not use for securing Modbus communications end-to-end (Modbus has no native security; see implementing-network-segmentation-for-ot for firewall-based controls)…