https://artifacts.trustmarkinitiative.org/lib/tips/nist-sp-800-53-r4-security-control-ac-4-_21__-physical-_-logical-separation-of-information-flows/4/NIST SP 800-53 r4 Security Control AC-4 (21): Physical / Logical Separation of Information Flows4Profile of requirements corresponding to NIST Special Publication 800-53, r4, Security Control AC-4 (21): Physical / Logical Separation of Information Flows.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/800-53Access ControlInformation FlowsNISTPhysical / Logical SeparationSecurityhttps://artifacts.trustmarkinitiative.org/lib/tds/information-flow-enforcement-_-physical-_-logical-separation-of-information-flows/1.0/1Information Flow Enforcement | Physical / Logical Separation Of Information Flows1.0Defines conformance and assessment criteria for verifying that an information system separates information flows logically or physically using organization-defined mechanisms and/or techniques to accomplish organization-defined required separations by types of information.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>.