Honeywell 9202-ETS-HN1 NE-FWMB01 Modbus TCP Firewall

The Honeywell 9202-ETS-HN1 / 51154724-300 NE-FWMB01, also cataloged as the 9202-ETS-HN1 Modbus TCP Firewall, operates as a dedicated hardware component for network traffic filtering and cybersecurity protection within DCS and SCADA networks.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel Isolation

The firewall appliance enforces deterministic packet inspection across Ethernet interfaces, applying strict protocol-level filtering specifically tailored for Modbus TCP communications without adding excessive network latency. Galvanic isolation on the communication ports and power supply inputs protects internal processing circuits from ground potential differences and common-mode electrical transients across distributed field networks. The hardware-based security architecture ensures high-speed packet throughput while isolating critical control nodes from unauthorized access attempts.

Frequently Asked Questions

Q: Does the firewall require network downtime or reconfiguration of existing IP addresses during deployment?

A: No. The unit utilizes a plug-and-protect installation methodology that permits transparent inline insertion without altering existing network IP routing schemes or causing control system downtime.

Q: How are security policies and firewall rules managed on the device?

A: Security policies are configured and deployed remotely using centralized management software communicating securely through dedicated administrative channels.

Q: What is the operating temperature range for harsh industrial environments?

A: The appliance is rated for continuous operation across an ambient temperature range spanning from -40 deg C to +85 deg C.

Field Installation Guidelines

1. Mount the security appliance securely onto a standard DIN-rail or panel backplate within a protective industrial enclosure.
2. Terminate incoming DC power lines to the designated power connector, verifying correct voltage polarity prior to energization.
3. Connect the Ethernet patch cables inline between the network switch and the protected controller node, ensuring proper link integrity.
4. Verify port communication status using diagnostic LEDs and perform a baseline traffic check before activating production security filtering rules.