Microsoft Entra ID
by Microsoft
Covered
15
controls
Partial
3
controls
Gaps
3
controls
Overview
Microsoft Entra ID by Microsoft is an identity & access management solution that covers 15 NIST 800-171 controls (14% total coverage). It addresses key requirements in the identity & access management domain for defense contractors pursuing CMMC compliance.
Controls Covered (15)
Implementation Notes
Deploy Microsoft Entra ID with FIPS-validated configurations. Integrate with your SIEM for centralized audit logging. Review partial controls quarterly to identify supplementary tooling needs.
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Implementation Guidance for Microsoft Entra ID
To configure Microsoft Entra ID for NIST 800-171 compliance, focus on these key control families: Access Control (AC) - Enable Conditional Access policies requiring MFA for all users, configure privileged identity management (PIM) for administrative roles, and implement just-in-time access. Set session timeout limits and location-based restrictions in security defaults. Identification and Authentication (IA) - Configure password policies meeting complexity requirements (14+ characters, complexity enabled), enable passwordless authentication options, and implement account lockout policies. Set up identity protection with risk-based conditional access. Audit and Accountability (AU) - Enable unified audit logging with 90-day retention minimum, configure sign-in logs and audit logs export to SIEM systems, and set up alert rules for suspicious activities. System and Communications Protection (SC) - Enable security defaults, configure device compliance policies, and implement certificate-based authentication where required. Generate assessment evidence through Entra ID's security reports, sign-in logs, and audit trail exports. Integrate with Microsoft Defender for endpoint compliance, Azure Information Protection for data classification, and third-party SIEM tools via Graph API. Common pitfalls include: insufficient conditional access policy scope, weak guest user controls, inadequate privileged role governance, missing break-glass account procedures, and failure to properly configure security defaults for hybrid environments.
Gap Analysis & Compensating Controls
The 3 uncovered NIST controls primarily fall in System and Information Integrity (SI) and Configuration Management (CM) families, representing critical gaps for defense contractors. SI controls around vulnerability scanning and malware protection require additional tools like Microsoft Defender for Endpoint or third-party vulnerability scanners. CM controls for baseline configurations and change management need complementary solutions such as Microsoft Intune for device management or Group Policy for on-premises systems. To address these gaps, implement Microsoft Defender suite for comprehensive endpoint protection, deploy a configuration management tool like Microsoft System Center Configuration Manager, and establish documented change control processes. Document gaps in your System Security Plan (SSP) under 'Control Implementation Summary' sections, detailing planned remediation timelines in your Plan of Action and Milestones (POA&M). Prioritize closing SI gaps first as they carry higher CMMC assessment weight (vulnerability management is heavily scrutinized), followed by CM controls which are often tested through technical demonstrations. Consider that identity-centric gaps may require hybrid solutions combining cloud and on-premises tools, particularly for air-gapped systems common in defense environments. Budget for additional licensing costs and integration complexity when planning gap closure strategies.
Compliance Cost Estimate
Microsoft Entra ID licensing ranges from $6-22 per user per month, with Entra ID P1 ($6/user/month) providing basic NIST compliance features and Entra ID P2 ($9/user/month) adding privileged identity management and advanced threat protection. Enterprise customers typically pay $12-18/user/month through volume licensing. Implementation costs range $15,000-50,000 for mid-size contractors, including configuration, policy setup, and staff training. Ongoing monitoring requires 0.25-0.5 FTE annually for administration and compliance maintenance. Compared to competitors like Okta ($2-16/user/month) or Ping Identity ($3-15/user/month), Entra ID offers competitive pricing with deeper Microsoft ecosystem integration, making it cost-effective for organizations already using Microsoft 365 or Azure services.
Compliance Cross-References
Microsoft Entra ID directly supports DFARS 252.204-7012 requirements for access control, identification and authentication, and audit capabilities. For CMMC Level 2, it satisfies Access Control (AC) domain objectives including AC.L2-3.1.1 (authorized access enforcement) and AC.L2-3.1.2 (transaction and function controls), plus Identification and Authentication (IA) objectives IA.L2-3.5.1 through IA.L2-3.5.11 covering multifactor authentication and account management. The solution addresses FedRAMP controls AC-2 (Account Management), AC-7 (Unsuccessful Logon Attempts), IA-2 (Identification and Authentication), and AU-2 (Event Logging). However, CMMC assessment objectives requiring system and communications protection (SC.L2-3.13.x series) and system integrity monitoring (SI.L2-3.14.x series) need additional tools. Assessors will verify Entra ID configurations during CMMC evaluations, particularly conditional access policies, MFA enforcement, and audit log retention. Integration with Microsoft's broader security stack (Defender, Purview, Intune) creates a comprehensive compliance foundation, though standalone deployment may require supplemental solutions for complete CMMC Level 2 certification.
Frequently Asked Questions
How many NIST 800-171 controls does Microsoft Entra ID cover?
Microsoft Entra ID covers 15 of 110 NIST 800-171 controls (14%), with 3 partially covered and 3 gaps.
Can Microsoft Entra ID alone satisfy CMMC Level 2?
No single tool covers all 110 NIST 800-171 controls. Microsoft Entra ID covers 14% and should be part of a layered security stack addressing the remaining controls.
What controls does Microsoft Entra ID not cover?
Microsoft Entra ID does not cover controls mp-3-8-1, sc-3-13-8, pe-3-10-1. These require supplementary solutions such as physical security controls, additional access management, or media protection tools.
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