NIST 800-171 DFARS Compliance Requirements & Assessment

NIST 800-171 defines security requirements for protecting Controlled Unclassified Information, often called CUI, in nonfederal systems. For defense manufacturers, that can include CNC programs, job documentation, controlled drawings, and production data. Excellerant supports these environments with controlled DNC workflows, user permissions, event logging, and deployment options that help reduce unmanaged CUI exposure.

DFARS clauses require many defense contractors and subcontractors to safeguard CUI and report cybersecurity posture related to NIST 800-171. The requirement is contractual, while NIST 800-171 provides the security control framework. For machine shops, that means shop-floor software handling CUI-bearing CNC files should support access control, traceability, and auditable file management.

Excellerant provides manufacturing software capabilities that support compliant workflows, but it does not certify an organization as NIST 800-171 or CMMC compliant. Certification and formal assessment depend on your complete cybersecurity program, policies, infrastructure, and assessor requirements. Excellerant helps address the shop-floor DNC, machine-data, permissions, logging, and revision-control pieces of that broader compliance picture.

CNC programs may reflect controlled part geometry, machining methods, defense customer requirements, or technical data derived from controlled drawings. When those files are stored, transferred, edited, or sent to machines, they can become part of the CUI environment. Secure DNC, revision control, access permissions, and event logging help reduce uncontrolled handling of sensitive manufacturing information.

Some defense contractors prefer or require on-premise systems to keep CUI-bearing CNC files and machine data within a controlled network boundary. Excellerant offers on-premise deployment options for shops that need tighter control over data location, access paths, and internal security policies. This can help align shop-floor software with customer contract requirements and cybersecurity governance.

Software can provide useful operational evidence such as user access settings, event logs, device connectivity history, NC file revision records, and documented program changes. These records help demonstrate that CNC program workflows are controlled and traceable. They should be combined with written policies, procedures, training records, and broader IT security documentation during an assessment.

Yes. Excellerant is built around universal machine connectivity for mixed environments that include modern CNCs, legacy RS-232 serial machines, paper-tape or BTR-style machines, and PLC-connected equipment. This matters for compliance because older machines often still handle sensitive programs, yet lack native controls. Excellerant helps bring them into centralized monitoring and controlled DNC workflows.

Excellerant supports bi-directional ERP and MES integration, including platforms such as SAP and Oracle, so shop-floor information can stay aligned with business systems. Integration can reduce manual entry, improve actual-versus-planned accuracy, and strengthen traceability. For regulated manufacturers, that means production activity, job context, and machine data can support a more complete operational record.