Overview

Security Requirements for 03.10.01 Limit Physical Access

This requirement applies to employees, individuals with permanent physical access authorization credentials, and visitors. Authorized individuals have credentials that include badges, identification cards, and smart cards. Organizations determine the strength of authorization credentials needed consistent with applicable laws, directives, policies, regulations, standards, procedures, and guidelines. This requirement applies only to areas within facilities that have not been designated as publicly accessible.Limiting physical access to equipment may include placing equipment in locked rooms or other secured areas and allowing access to authorized individuals only; and placing equipment in locations that can be monitored by organizational personnel. Computing devices, external disk drives, networking devices, monitors, printers, copiers, scanners, facsimile machines, and audio devices are examples of equipment.

Assessment GuidanceExamine 0/8

How an assessor determines this requirement is met. Source: CMMC Assessment Guide – Level 2, Version 2.13 (NIST SP 800-171 Rev. 2).

Discussion

This addresses the company’s physical space (e.g., office, testing environments, equipment rooms), technical assets, and non-technical assets that need to be protected from unauthorized physical access. Specific environments are limited to authorized employees, and access is controlled with badges, electronic locks, physical key locks, etc.

Output devices, such as printers, are placed in areas where their use does not expose data to unauthorized individuals. Lists of personnel with authorized access are developed and maintained, and personnel are issued appropriate authorization credentials.

Examples

  1. Example 1

    You manage a DoD project that requires special equipment used only by project team members [b, c]. You work with the facilities manager to put locks on the doors to the areas where the equipment is stored and used [b, c, d]. Project team members are the only individuals issued with keys to the space. This restricts access to only those employees who work on the DoD project and require access to that equipment.

Assessment Methods

Examine
The process of reviewing, inspecting, observing, studying, or analyzing assessment objects (e.g., policies, procedures, plans, system designs, mechanisms) to facilitate understanding, achieve clarification, or obtain evidence.Example: An assessor reads the access control policy and inspects system configuration settings to confirm they match.

Not all of the evidence listed is required to meet this requirement — check the items your organization has collected.

Interview
The process of holding discussions with individuals or groups within an organization to facilitate understanding, achieve clarification, or identify the location of evidence.Example: An assessor asks a system administrator to describe how user accounts are approved, reviewed, and disabled.
  • Personnel with physical access authorization responsibilities
  • Personnel with physical access to system facility
  • Personnel with information security responsibilities
Test
The process of exercising assessment objects (e.g., activities, mechanisms) under specified conditions to compare actual behavior with expected behavior.Example: An assessor attempts to sign in with a disabled account to confirm that access is denied.
  • Organizational processes for physical access authorizations
  • Mechanisms supporting or implementing physical access authorizations

Potential Assessment Considerations

  • Are lists of personnel with authorized access developed and maintained, and are appropriate authorization credentials issued [a]?
  • Has the facility/building manager designated building areas as “sensitive” and designed physical security protections (e.g., guards, locks, cameras, card readers) to limit physical access to the area to only authorized employees [b, c, d]?
  • Are output devices such as printers placed in areas where their use does not expose data to unauthorized individuals [c]?

Key References

NIST SP 800-171 Rev. 2 3.10.1FAR Clause 52.204-21 b.1.viii

Evidence

  1. 03.10.01.a

    Authorized individuals allowed physical access are identified

  1. 03.10.01.b

    Physical access to organizational systems is limited to authorized individuals

  1. 03.10.01.c

    Physical access to equipment is limited to authorized individuals

  1. 03.10.01.d

    Physical access to operating environments is limited to authorized individuals