https://artifacts.trustmarkinitiative.org/lib/tips/nist-sp-800-53-r4-security-control-sc-7-_4__-external-telecommunications-services/4/NIST SP 800-53 r4 Security Control SC-7 (4): External Telecommunications Services4Profile of requirements corresponding to NIST Special Publication 800-53, r4, Security Control SC-7 (4): External Telecommunications Services. Applicable to MODERATE impact and HIGH impact systems.2021-04-26T00:00:00.000ZfalseThis document and the information contained herein is provided on an "AS IS" basis, and the Georgia Tech Research Institute disclaims all warranties, express or implied, including but not limited to any warranty that the use of the information herein will not infringe any rights or any implied warranties or merchantability or fitness for a particular purpose. In addition, the Georgia Tech Research Institute disclaims legal liability for any loss incurred as a result of the use or reliance on the document or the information contained herein.https://trustmarkinitiative.org/TMIPRIMARYhelp@trustmarkinitiative.org555-555-5555https://trustmarkinitiative.org/800-53Communications ProtectionExternal Telecommunications ServicesHighModerateNISTSecuritySystemhttps://artifacts.trustmarkinitiative.org/lib/tds/boundary-protection-_-external-telecommunications-services---managed-interfaces/1.0/1Boundary Protection | External Telecommunications Services - Managed Interfaces1.0Defines conformance and assessment criteria for verifying that an organization implements a managed interface for each external telecommunication service.https://artifacts.trustmarkinitiative.org/lib/tds/boundary-protection-_-external-telecommunications-services---traffic-flow-policies/1.0/2Boundary Protection | External Telecommunications Services - Traffic Flow Policies1.0Defines conformance and assessment criteria for verifying that an organization establishes a traffic flow policy for each managed interface.https://artifacts.trustmarkinitiative.org/lib/tds/boundary-protection-_-external-telecommunications-services---protection-of-transmitted-information/1.0/3Boundary Protection | External Telecommunications Services - Protection of Transmitted Information1.0Defines conformance and assessment criteria for verifying that an organization protects the confidentiality and integrity of the information being transmitted across each interface.https://artifacts.trustmarkinitiative.org/lib/tds/boundary-protection-_-external-telecommunications-services---review-of-traffic-flow-exceptions/1.0/4Boundary Protection | External Telecommunications Services - Review of Traffic Flow Exceptions1.0Defines conformance and assessment criteria for verifying that an organization reviews exceptions to the traffic flow policy at an organization-defined frequency and removes exceptions that are no longer supported by an explicit mission/business need.https://artifacts.trustmarkinitiative.org/lib/tds/boundary-protection-_-external-telecommunications-services---documentation-of-traffic-flow-exceptions/1.0/5Boundary Protection | External Telecommunications Services - Documentation of Traffic Flow Exceptions1.0Defines conformance and assessment criteria for verifying that an organization documents each exception to the traffic flow policy with a supporting mission/business need and duration of that need.SP800-53R4NIST Special Publication 800-53 Revision 4, Security and Privacy Controls for Federal Information Systems and Organizations, National Institute of Standards and Technology, April 2013 (Includes updates as of 01-15-2014). Available at <a href="http://dx.doi.org/10.6028/NIST.SP.800-53r4">http://dx.doi.org/10.6028/NIST.SP.800-53r4</a>.