AC.L2-3.1.1 Authorized Access Control
Restrict system access so only identified, authorized users, the processes running on their behalf, and approved devices including other connected systems can connect.
Source: CMMC 2.0, AC.L2-3.1.1. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open CMMC 2.0 in the compliance library.
These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.
system holds itEvidence a system already holds
- Account inventory listing authorized users, service/process accounts and approved devices · Endpoint management (MDM / EDR)
- System configuration showing device and system-to-system connection allow lists · Endpoint management (MDM / EDR)
periodic reviewEvidence produced at each review
- Account provisioning and approval records showing authorization before access · Identity provider / directory
- Periodic account recertification results · Identity provider / directory
governing documentDocuments that govern the control
none for this control
First move
Common gaps auditors find
- Service and machine accounts never authorized or reviewed
- Device-level access unrestricted while user access is controlled
- Stale accounts retained after staff depart
Do this for your whole sheet
Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.
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