Most factories preparing for CMMC compliance still rely on legacy industrial equipment — machines that run reliably but can’t be patched, encrypted, or managed by modern security tools. From older PLCs and CNCs to legacy HMIs, these systems fall under CMMC’s category of “specialized assets.” They can’t support agents or updates, yet they handle critical production data and Controlled Unclassified Information (CUI).

Traditional, agent-based security solutions often fail in these environments. Installing software on controllers or redesigning VLANs risks halting production and invalidating warranties. That’s why more manufacturers are turning to on-premise CUI enclaves — purpose-built hardware that creates a secure overlay around unpatchable devices instead of changing them.

The Trout Access Gate is a plug-and-play OT security appliance that brings your legacy systems into CMMC scope without downtime. Installed on-premise, it automatically builds encrypted micro-zones around industrial assets, controls access through Microsoft 365 and MFA, and continuously logs events for audits. In hours, your shop floor gains segmentation, encryption, and monitoring — all the CMMC control families (AC, IA, SC, AU, IR, CM) — without touching your existing network.

This CMMC enclave for OT keeps production live while satisfying audit requirements. It eliminates tool sprawl, VLAN redesigns, and cloud dependence — everything operates locally, under your control. Factories across the U.S. have already used Trout’s enclave to achieve CMMC readiness for factories and DFARS / NIST 800-171 compliance with no disruption to their operations.

To learn more, visit our Trust Center.

Secure what you already own — and bring your factory into compliance with Trout’s CMMC Enclave for Legacy Equipment.