FedRAMP Controls / AC

AC-20(1) Limits on Authorized Use

Family AC
Baselines moderate
Mapped KSIs 5

Control statement

Permit authorized individuals to use an external system to access the system or to process, store, or transmit organization-controlled information only after:
    (a) Verification of the implementation of controls on the external system as specified in the organization’s security and privacy policies and security and privacy plans; or
    (b) Retention of approved system connection or processing agreements with the organizational entity hosting the external system.

Parameter placeholders {{ insert: param, … }} reference FedRAMP-set values in the resolved profile. Full parameter map is preserved in the catalog database.

Covered by these Key Security Indicators

KSITitleCategory
KSI-CNA-02Attack Surface
_Persistently_ ensure _machine-based_ _information resources_ have a minimal attack surface and that lateral movement is minimized if compromised.
Cloud Native Architecture
KSI-IAM-04Just-in-Time Authorization
Use a least-privileged, role and attribute-based, and just-in-time security authorization model for all user and non-user accounts and services.
Identity and Access Management
KSI-IAM-05Least Privilege
_Persistently_ ensure that identity and access management employs measures to ensure each user or device can only access the resources they need.
Identity and Access Management
KSI-MLA-01Security Information and Event Management (SIEM)
Operate a Security Information and Event Management (SIEM) or similar system(s) for centralized, tamper-resistent logging of events, activities, and changes.
Monitoring, Logging, and Auditing
KSI-MLA-07Event Types
Maintain a list of information resources and event types that will be monitored, logged, and audited, then do so.
Monitoring, Logging, and Auditing