NIST SP 800-171
Control 3.5.2
Authenticate Users, Processes, and Devices
CMMC-RP Certified Team
24+ Years Experience
2,500+ Clients Served
Official Requirement
Authenticate (or verify) the identities of those users, processes, or devices, as a prerequisite to allowing access to organizational information systems.
What This Means in Plain English
Before any user, process, or device is allowed access, their identity must be verified through authentication. This means passwords, certificates, tokens, biometrics, or other mechanisms that prove they are who they claim to be.
How Petronella Implements This Control
Petronella Technology Group implements this control through:
- Microsoft Entra ID authentication for all user access with strong password policies
- Multi-factor authentication (MFA) enforced for all users via Conditional Access
- Certificate-based authentication for device identity verification
- Service account authentication using managed identities or certificates (no embedded passwords)
- CrowdStrike Falcon verifying device identity and health before granting resource access
Assessment Guidance
Assessors will test authentication mechanisms for users, devices, and processes, verify that MFA is enforced, check that authentication is required before any system access, and review authentication policies for strength and appropriateness.
Common Implementation Gaps
- Systems accessible without authentication
- Weak password policies (short length, no complexity)
- No multi-factor authentication
- Service accounts using hardcoded or shared passwords
- Devices not authenticated before network access
Cross-Framework Mapping
| Framework | Mapped Controls |
|---|---|
| NIST SP 800-53 | IA-2, IA-3, IA-5 |
| HIPAA | 164.312(d) - Person or Entity Authentication |
| PCI DSS | Req 8.2 - Employ at least one method to authenticate all users |
Need Help Implementing 3.5.2?
Our CMMC-RP certified team can assess your current compliance posture and build a remediation plan.
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