Level 2 Assessment Guide

Source of Reference: The official CMMC Level 2 Assessment Guide from the Office of the Under Secretary of Defense Acquisition & Sustainment.

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Access Control (AC)

Level 1 AC Practices

AC.L1-3.1.1 - Authorized Access Control

SECURITY REQUIREMENT Limit information system access to authorized users, processes acting on behalf of authorized users, or devices (including other information systems).

ASSESSMENT OBJECTIVES [a] authorized users are identified; [b] processes acting on behalf of authorized users are identified; [c] devices (and other systems) authorized to connect to the system are identified; [d] system access is limited to authorized users; [e] system access is limited to processes acting on behalf of authorized users; and [f] system access is limited to authorized devices (including other systems).

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AC.L1-3.1.2 - Transaction & Function Control

SECURITY REQUIREMENT Limit information system access to the types of transactions and functions that authorized users are permitted to execute.

ASSESSMENT OBJECTIVES [a] the types of transactions and functions that authorized users are permitted to execute are defined; and [b] system access is limited to the defined types of transactions and functions for authorized users.

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AC.L1-3.1.20 - External Connections

SECURITY REQUIREMENT Verify and control/limit connections to and use of external information systems.

ASSESSMENT OBJECTIVES [a] connections to external systems are identified; [b] the use of external systems is identified; [c] connections to external systems are verified; [d] the use of external systems is verified; [e] connections to external systems are controlled/limited; and [f] the use of external systems is controlled/limited.

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AC.L1-3.1.22 - Control Public Information

SECURITY REQUIREMENT Control information posted or processed on publicly accessible information systems.

ASSESSMENT OBJECTIVES [a] individuals authorized to post or process information on publicly accessible systems are identified; [b] procedures to ensure FCI is not posted or processed on publicly accessible systems are identified; [c] a review process is in place prior to posting of any content to publicly accessible systems; [d] content on publicly accessible systems is reviewed to ensure that it does not include FCI; and [e] mechanisms are in place to remove and address improper posting of FCI.

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Level 2 AC Practices

AC.L2-3.1.3 – Control CUI Flow

SECURITY REQUIREMENT Control the flow of CUI in accordance with approved authorizations.

ASSESSMENT OBJECTIVES [a] information flow control policies are defined; [b] methods and enforcement mechanisms for controlling the flow of CUI are defined; [c] designated sources and destinations (e.g., networks, individuals, and devices) for CUI within the system and between interconnected systems are identified; [d] authorizations for controlling the flow of CUI are defined; and [e] approved authorizations for controlling the flow of CUI are enforced.

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