01 – Access Control Master Policy

 

01 – Access Control Master Policy

Prepared by: [Name ----------------]
Organization: [company name]

1. Purpose

The purpose of this policy is to establish a comprehensive framework for managing access to organizational systems, applications, and data. It ensures compliance with CMMC Level 2 Access Control (AC) requirements, NIST SP 800‑171, and DFARS 252.204‑7012, while protecting Controlled Unclassified Information (CUI) and other sensitive assets.

2. Scope

This policy applies to:

3. Applicability

  • Systems processing, storing, or transmitting CUI.
  • Administrative and privileged accounts.
  • External systems connected to organizational networks.

4. Roles & Responsibilities

  • System Owners: Ensure access controls are implemented and reviewed.
  • IT Security Team: Configure and monitor identity, device compliance, endpoint protection, and data governance policies.
  • Managers: Approve user access requests and role assignments.
  • Users: Comply with access restrictions and report violations.

5. Definitions

  • User: Any individual with authorized access.
  • Privileged Role: Accounts with elevated rights (admin, security operator).
  • Device: Endpoint (workstation, laptop, mobile, server).
  • External System: Non‑enterprise system connected to organizational resources.
  • CUI System: Any system handling Controlled Unclassified Information.

6. Policy Statements

  • Access must be role‑based and follow the principle of least privilege.
  • All accounts must be uniquely identifiable; shared accounts are prohibited.
  • Privileged access must be managed via Privileged Identity Management (PIM) or equivalent.
  • Conditional Access or equivalent policies must enforce device compliance, MFA, and session controls.
  • Information flow must be restricted to approved destinations.
  • Remote and wireless access must follow encryption and segmentation requirements.
  • Mobile devices and portable storage must be controlled via MDM/MAM and DLP solutions.
  • Access reviews must be conducted quarterly.

7. Enforcement

Violations may result in disciplinary action, up to and including termination.

Technical enforcement is achieved through:

8. Monitoring

  • Continuous monitoring of sign‑in logs, access reviews, and privileged activations.
  • Automated alerts for unauthorized access attempts.
  • Audit trails maintained for all access changes.

9. References

  • NIST SP 800‑171 Rev. 2
  • CMMC 2.0 Level 2 (Access Control Domain)
  • DFARS 252.204‑7012
  • Vendor technical reference guides (Microsoft, Google, AWS, etc.)

10. Evidence Required

  • Signed Access Control Policy document.
  • Annual review log.
  • Change control records.
  • Conditional Access / IAM policy exports.
  • Privileged activation logs.

End of Policy – AC 01

Date: [  /  /  ]


https://www.blogger.com/u/1/blog/post/edit/4293395378927152575/5496289046396711545


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