NIST 800-171 3.5.6Disable identifiers after a defined period of inactivity
Overview
This control requires organizations to disable identifiers after a defined period of inactivity. It is part of the Identification and Authentication family and is required for CMMC Level 2 certification. Defense contractors handling CUI must implement this control to protect sensitive information and demonstrate compliance during assessments.
Assessment Objectives
- 1Determine if the organization has defined policies and procedures to disable identifiers after a defined period of inactivity
- 2Determine if the organization implements mechanisms to disable identifiers after a defined period of inactivity
- 3Verify that the implementation is consistent with organizational policies and NIST 800-171 requirements
Implementation Guidance
Implement this control by establishing documented policies and procedures, deploying appropriate technical controls, and maintaining evidence of ongoing compliance. Regularly review and test the implementation to ensure effectiveness and address any gaps identified during assessments.
Common Audit Gaps
Related DFARS Clauses
Frequently Asked Questions
What is NIST 800-171 control 3.5.6?
NIST 800-171 control 3.5.6 requires organizations to disable identifiers after a defined period of inactivity. This control is part of the Identification and Authentication family and is required for CMMC Level 2 certification.
How do you implement NIST 800-171 3.5.6?
To implement control 3.5.6, establish documented policies, deploy technical controls to disable identifiers after a defined period of inactivity, and maintain evidence of compliance. Regular testing and monitoring are essential.
What evidence is needed for NIST 800-171 3.5.6?
Evidence for control 3.5.6 typically includes written policies and procedures, system configuration documentation, audit logs showing enforcement, and records of periodic reviews. Assessors will look for both documentation and technical implementation.
Related Controls
3.5.5|Prevent reuse of identifiers for a defined period
Identification and Authentication
3.5.7|Enforce a minimum password complexity and change of characters when new passwords are created
Identification and Authentication
3.1.1|Limit system access to authorized users, processes acting on behalf of authorized users, and devices
Access Control
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