NIST 800-53 Rev 5
424 controls available
External Telecommunications Services
System and Communications Protection
Control Statement
Implement a managed interface for each external telecommunication service; Establish a traffic flow policy for each managed interface; Protect the confidentiality and integrity of the information being transmitted across each interface; Document each exception to the traffic flow policy with a supporting mission or business need and duration of that need; Review exceptions to the traffic flow policy {{ insert: param, sc-07.04_odp }} and remove exceptions that are no longer supported by an explicit mission or business need; Prevent unauthorized exchange of control plane traffic with external networks; Publish information to enable remote networks to detect unauthorized control plane traffic from internal networks; and Filter unauthorized control plane traffic from external networks.
Discussion
External telecommunications services can provide data and/or voice communications services. Examples of control plane traffic include Border Gateway Protocol (BGP) routing, Domain Name System (DNS), and management protocols. See [SP 800-189](#f5edfe51-d1f2-422e-9b27-5d0e90b49c72) for additional information on the use of the resource public key infrastructure (RPKI) to protect BGP routes and detect unauthorized BGP announcements.
- Framework
- NIST SP 800-53 Rev 5
- Family
- System and Communications Protection
- Baselines
- moderate, high
Related Frameworks
10 paths across 1 framework
Related Frameworks
CCI10 mappings
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
- DISA · 2025-01-23 · disa_cci_list · equivalent
Related STIGs
79 STIGs reach this control through 70 CCIs. Expand a row to see the responsible NICE and O*NET roles.