The operating system must protect the confidentiality of transmitted information.

Ensuring the confidentiality of transmitted information requires the operating system take feasible measures to employ transmission layer security. This requirement applies to communications across internal and external networks.

All remote sessions must be conducted via encrypted services and ports.

Ask the operator to document all configured external ports and protocols. If any unencrypted connections are used, this is a finding.

All remote sessions must be conducted via SSH and IPsec. Ensure that SSH and IPsec are the only protocols used.