Honeywell 9202-ETS-HN1 Modbus TCP Firewall

Product Overview

The Honeywell 9202-ETS-HNI, also identified by part number 51154724-300 (NE-FWMB01), is a specialized industrial security appliance designed to safeguard Modbus TCP communications. In an era of increasing cyber threats to infrastructure, this firewall provides a "Plug-and-Protect" layer of defense for Distributed Control Systems (DCS), SCADA, and PLC networks. 

Technical Specifications

• Manufacturer: Honeywell

• Part Number: 9202-ETS-HNI / 51154724-300

• Model Code: NE-FWMB01

• Technology Platform: Eaton MTL Tofino™ Industrial Security

• Protocol Support: Modbus TCP (Deep Packet Inspection)

• Operating Temperature: -40°C to +85°C

• Installation: DIN Rail Mount

• Security Functions: Firewall, Intrusion Prevention, Secure Traffic Filtering

Key Features and Engineering Advantages

• Modbus TCP Enforcer: Unlike standard IT firewalls, this appliance performs Deep Packet Inspection (DPI). It doesn't just block ports; it inspects the actual Modbus commands (Read/Write) to ensure only authorized actions are performed on the PLC or Controller.

• Plug-and-Protect Deployment: The 9202-ETS-HNI functions as a transparent bridge. It can be installed into a live network without requiring an IP address for itself, meaning no changes to the existing PLC or DCS configurations are necessary.

• Extreme Temperature Resilience: Rated for -40°C to +85°C, this unit is designed for the "edge" of the network—mounted in remote instrument buildings or outdoor cabinets where environmental control is minimal.

• Zero-Disruption Security: Designed specifically for automation engineers, the firewall allows for a "Test Mode" where security rules can be verified against live traffic before they are enforced, preventing accidental process trips.

• Cyber-Physical Isolation: Provides a robust barrier that isolates critical control segments from the rest of the plant network, mitigating the risk of malware propagation and unauthorized access.