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OPSWAT MetaDefender Industrial Firewall: Protection at the Industrial Command Level

2 November 2026

OPSWAT MetaDefender Industrial Firewall blog cover

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MetaDefender Industrial Firewall is a rugged OT firewall that understands industrial protocols on operational technology networks to provide segmentation, access control and attack prevention. It inspects commands in Modbus and similar control protocols and, by allowing only permitted devices, directions and operations, protects critical control systems from unauthorised or erroneous operations.

Core Capabilities

Protocol awareness: Beyond IP and port rules, it controls which industrial command may be executed.

Micro-segmentation: Critical PLCs and controllers are separated into small security zones, limiting how far an incident can spread along the production line.

Compensating control: Network-level protection is added for legacy or unpatchable OT assets.

Benefits for Organisations

The risk of misconfiguration, unauthorised changes and network-based attacks falls while operational continuity is preserved.

To draw up a segmentation plan for your critical control systems, get in touch with ATEON's specialists.