The organization:
Establishes and documents configuration settings for information technology products employed within the information system using [FedRAMP Assignment: see CM-6(a) Additional FedRAMP Requirements and Guidance] that reflect the most restrictive mode consistent with operational requirements;
CM-6(a) Additional FedRAMP Requirements and Guidance:
Requirement 1: The service provider shall use the Center for Internet Security guidelines (Level 1) to establish configuration settings or establishes its own configuration settings if USGCB is not available. If no recognized USGCB is available for the technology in use, the CSP should create their own baseline and include a justification statement as to how they came up with the baseline configuration settings.
Requirement 2: The service provider shall ensure that checklists for configuration settings are Security Content Automation Protocol (SCAP) (http://scap.nist.gov/) validated or SCAP compatible (if validated checklists are not available).
Guidance: Information on the USGCB checklists can be found at: https://csrc.nist.gov/Projects/United-States-Government-Configuration-Baseline.
Implements the configuration settings;
Identifies, documents, and approves any deviations from established configuration settings for [Assignment: organization-defined information system components] based on [Assignment: organization-defined operational requirements]; and
Monitors and controls changes to the configuration settings in accordance with organizational policies and procedures.