NIST 800-53 REV 5 • SYSTEM AND COMMUNICATIONS PROTECTION
SC-9 — Transmission Confidentiality
CMMC Practice Mapping
No direct CMMC mapping
NIST 800-171 Mapping
No direct NIST 800-171 mapping
Related Controls
No related controls listed
Practitioner Notes
This control (withdrawn in Rev 5) has been incorporated into SC-8. See SC-8 for transmission confidentiality requirements.
Example 1: Refer to SC-8 — require TLS 1.2 or higher for all web-based communications to protect data confidentiality in transit.
Example 2: Refer to SC-8 — use IPsec VPN tunnels for site-to-site connections to ensure all inter-office traffic is encrypted and confidential.