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Search Search CSRC MENU Search Search Projects Publications Expand or Collapse Drafts for Public Comment All Public Drafts Final Pubs FIPS (standards) Special Publications (SP s ) IR (interagency/internal reports) CSWP (cybersecurity white papers) ITL Bulletins Project Descriptions Journal Articles Conference Papers Books Topics Expand or Collapse Security & Privacy Applications Technologies Sectors Laws & Regulations Activities & Products News & Updates Events Glossary About CSRC Expand or Collapse Computer Security Division Cryptographic Technology Software Security Group Hardware Security Group Security Engineering and Risk Management Applied Cybersecurity Division Cybersecurity and Privacy Applications National Cybersecurity Center of Excellence (NCCoE) National Initiative for Cybersecurity Education (NICE) Contact Us Information Technology Laboratory Computer Security Resource Center Publications NIST SP 800-207A A Zero Trust Architecture Model for Access Control in Cloud-Native Applications in Multi-Cloud Environments Share to Facebook Share to X Share to LinkedIn Share ia Email Documentation Topics Date Published: September 2023 Author(s) Ramaswamy Chandramouli (NIST) , Zack Butcher (Tetrate) Abstract One of the basic tenets of zero trust is to remove the implicit trust in users, services, and devices based only on their network location, affiliation, and ownership. NIST Special Publication 800-207 has laid out a comprehensive set of zero trust principles and referenced zero trust architectures (ZTA) for turning those concepts into reality. A key paradigm shift in ZTAs is the change in focus from security controls based on segmentation and isolation using network parameters (e.g., Internet Protocol (IP) addresses, subnets, perimeter) to identities. From an application security point of view, this requires authentication and authorization policies based on application and service identities in addition to the underlying network parameters and user identities. This in turn requires a platform that consists of Application Programming Interface (API) gateways, sidecar proxies, and application identity infrastructures (e.g., Secure Production Identity Framework for Everyone [SPIFFE]) that can enforce those policies irrespective of the location of the services or applications, whether on-premises or on multiple clouds. The objective of this publication is to provide guidance for realizing an architecture that can enforce granular application-level policies while meeting the runtime requirements of ZTA for multi-cloud and hybrid environments. One of the basic tenets of zero trust is to remove the implicit trust in users, services, and devices based only on their network location, affiliation, and ownership. NIST Special Publication 800-207 has laid out a comprehensive set of zero trust principles and referenced zero trust architectures... See full abstract One of the basic tenets of zero trust is to remove the implicit trust in users, services, and devices based only on their network location, affiliation, and ownership. NIST Special Publication 800-207 has laid out a comprehensive set of zero trust principles and referenced zero trust architectures (ZTA) for turning those concepts into reality. A key paradigm shift in ZTAs is the change in focus from security controls based on segmentation and isolation using network parameters (e.g., Internet Protocol (IP) addresses, subnets, perimeter) to identities. From an application security point of view, this requires authentication and authorization policies based on application and service identities in addition to the underlying network parameters and user identities. This in turn requires a platform that consists of Application Programming Interface (API) gateways, sidecar proxies, and application identity infrastructures (e.g., Secure Production Identity Framework for Everyone [SPIFFE]) that can enforce those policies irrespective of the location of the services or applications, whether on-premises or on multiple clouds. The objective of this publication is to provide guidance for realizing an architecture that can enforce granular application-level policies while meeting the runtime requirements of ZTA for multi-cloud and hybrid environments. Hide full abstract Keywords egress gateway ; identity-tier policies ; ingress gateway ; microservices ; multi-cloud ; network-tier policies ; service mesh ; sidecar proxy ; SPIFFE ; transit gateway ; zero trust ; zero trust architecture Control Families None selected Documentation Publication: https://doi.org/10.6028/NIST.SP.800-207A Download URL Supplemental Material: None available Publication Parts: SP 800-207 Document History: 04/18/23: SP 800-207A (Draft) 09/13/23: SP 800-207A (Final) Topics Security and Privacy access control , zero trust Technologies cloud & virtualization HEADQUARTERS 100 Bureau Drive Gaithersburg, MD 20899 X (link is external) facebook (link is external) linkedin (link is external) instagram (link is external) youtube (link is external) rss govdelivery (link is external) Want updates about CSRC and our publications? 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