Operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest.
Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).
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Note: If there is a documented and approved reason for not having data at rest encryption, this requirement is Not Applicable.
Verify that OL 9 prevents unauthorized disclosure or modification of all information requiring at rest protection by using disk encryption.
Determine the partition layout for the system with the following command: