CNSS Instructions

Instructions

The instructions presented under this topic provide guidance and establishes technical criteria for specific national security systems issues. These instructions include technical or implementation guidelines, restrictions, doctrines, and procedures applicable to cybersecurity. All instructions are binding upon all U.S. Government departments and agencies.

Documents
File Type	Title/Description
	CNSSI 1001 National Instruction On Classified Information Spillage Release Date: 06/15/2021, File Size: 684734
	CNSSI 1002 Management Of Combined Secure Interoperability Requirements Release Date: 07/31/2023, File Size: 280637 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1010 Cyber Incident Response Release Date: 09/27/2021, File Size: 625481 Replaces 24x7 Computer Incident Response Capability (CIRC) on National Security Systems Original Release Date: 07/24/2013 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1011 Implementing Host-Based Security Capabilities on National Security Systems Release Date: 09/03/2021, File Size: 572409 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1012 Instruction for Network Mapping of National Security Systems (NSS) Release Date: 09/03/2021, File Size: 568736 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1013 Network Intrusion Detection Sys & Intrusion Prevention Sys (IDS/IPS) on NSS Release Date: 09/03/2021, File Size: 474740 This Committee on National Security Systems Instruction (CNSSI) provides operational guidance and assigns responsibilities for deploying network intrusion detection systems and network intrusion prevention systems (IDS/IPS) capabilities for National Security Systems (NSS), as defined in Reference c. This Instruction is a derivative issuance of the National Directive on National Security Systems, CNSSD No. 502. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1015 Enterprise Audit Management (EAM) for National Security Systems (NSS) Release Date: 12/04/2024, File Size: 2136968 Provides operational guidance and assigns responsibilities for deploying EAM for National Security Systems. This Instruction establishes the minimum EAM standards required for D/As with NSS. It complements other CNSSIs that, when integrated across all NSS, will help organizations protect, detect, defend, and manage NSS, as well as enhance situational awareness to comply with Federal legislation and regulations, including the Federal Information Security Modernization Act of 2014 (FISMA), the Privacy Act of 1974 as amended (including Statutory Notes in 5 U.S.C. 552a), Executive Order 14028, and National Security Memorandum 8. 5.Upon final signature of this instruction, the control guidance and parameter values within this document will become authoritative for the applicable controls within the CNSSI-1253, Categorization and Control Selection for National Security Systems baselines.
	CNSSI-1017 Identity, Credential And Access Management (ICAM) for Federated Federal National Security Systems (NSS) Release Date: 04/23/2024, File Size: 2028751 The Committee on National Security Systems Instruction (CNSSI) 1017 provides United States Government (USG) Departments and Agencies (D/As) with the requirements for implementing Identity, Credential, and Access Management (ICAM) capabilities on the United States Federal Secret Fabric to be part of the US Federal Secret Fabric Access Management Federation. This Instruction outlines the normative guidance and informative best practices for successful implementation and provides an understanding of the government-wide scope of activities for implementing ICAM that informs D/A strategic planning. Finally, CNSSI-1017 provides policy, guidance and best practices to USG D/As to incorporate ICAM capabilities that promote secure information sharing and interoperability across the United States Federal Secret Fabric, to include NSS that share information with mission and State, Local, Tribal, and Territorial partners.
	CNSSI 1031 INSTRUCTION FOR A SYSTEM TRANSMISSION SECURITY (TRANSEC) PLAN Release Date: 06/30/2023, File Size: 745726
	CNSSI 1100 Consistency and Synchronization During Classification and Declassification of Information Related to Cybersecurity of National Security Systems Release Date: 04/14/2016, File Size: 241387
	CNSSI 1200 Instruction for Space Systems Used to Support NSS Release Date: 05/07/2014, File Size: 264363 This instruction helps ensure the success of missions that rely on use of space-based National Security Systems (NSS).
	CNSSI-1200 NATIONAL CYBERSECURITY INSTRUCTION FOR SPACE SYSTEMS USED TO SUPPORT NATIONAL SECURITY MISSIONS Release Date: 08/29/2025, File Size: 360752 This instruction helps ensure the success of missions that rely on use of space-based National Security Systems (NSS). It elaborates on how to appropriately integrate cybersecurity into the planning, development, design, launch, sustained operation, and deactivation of those space systems used to collect, generate, process, store, display, or transmit national security information, as well as any supporting or related national security systems. It also provides guidance to the AOs and SCAs for space systems with respect to their roles within the Risk Management Framework (RMF).
	CNSSI 1253 Security Categorization and Control Selection for National Security Systems Release Date: 08/01/2022, File Size: 3655340
	CNSSI 1253E Attachment 1 Security Overlays Template Release Date: 12/12/2022, File Size: 283020 Updated to reflect NIST SP 800-53 Rev. 5 and the corresponding update to CNSSI 1253.
	CNSSI 1253E Attachment 3 Cross Domain Solution Overlay Release Date: 02/08/2023, File Size: 1565163 Updated to reflect NIST SP 800-53 Rev. 5 and the corresponding update to CNSSI 1253. -Administrative updates have been made to the document on 1/10/2024. If needed reach out to Secretariat for redline copy. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1253E, Attachment 5 Classified System Overlay Release Date: 09/30/2022, File Size: 553253 This overlay identifies security control specifications needed to safeguard classified information stored, processed, or transmitted by national security systems (NSS). Updated to reflect NIST SP 800-53 Rev. 5 and the corresponding update to CNSSI 1253.
	CNSSI 1253F Attachment 2 Space Platform Overlay Release Date: 06/01/2013, File Size: 564736 Administrative change from Appendix K to F.
	CNSSI 1253F - Attachment 2 Space Platform Overlay Release Date: 02/23/2018, File Size: 541790 Administrative changes from Rev 3 to Rev 4.
	CNSSI 1253F Attachment 2 Space Platform Overlay Release Date: 08/29/2025, File Size: 874922 Space national security system (NSS) maturity has developed to a point where numerous threats are now understood to pose risks for concerns such as unauthorized access, data integrity compromise, operational asset availability, and secure communications. This Space Platform Overlay identifies security control tailoring to protect portions of an overall space NSS.
	CNSSI 1253F Attachment 4 Intelligence Overlay Release Date: 04/19/2016, File Size: 511613 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1253F, Attachment 4.1 IC CIO Signed Memo for Intelligence Overlay Release Date: 04/20/2016, File Size: 1162948 IC CIO signed memo for revised Intelligence Overlay. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 1253F, Attachment 4.2 Intelligence Overlay Release Date: 11/27/2023, Version: Nov 2023, File Size: 811150 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI-1253F Attachment 6 Privacy Overlay Release Date: 10/31/2024, Version: 2024, File Size: 1199834 The Privacy Overlays support the Categorize and Select steps of the National Institute of Standards, and Technology (NIST) Risk Management Framework (RMF). The Privacy Overlays identify security and privacy control specifications required to protect Personally Identifiable Information (PII) in National Security Systems (NSS) and reduce privacy risks to individuals, agencies, and organizations throughout the information lifecycle. The Privacy Overlays do not supersede or change privacy requirements established by statutes, regulations, Executive Orders (EO), or applicable Federal policies or alter any agency authorities. Where certain activities are not required for NSS by relevant authorities, the Privacy Overlays may still require the activities for NSS to reduce privacy risk levels at as matter of policy.
	CNSSI 1254 Risk Management Framework Documentation, Data Element Standards, and Reciprocity Process for National Security Systems Release Date: 08/31/2016, File Size: 608950
	CNSSI 1300 Instruction for Secret National Security Systems Public Key Infrastructure X.509 Certificate Policy Release Date: 01/06/2022, File Size: 760703 CNSSI 1300 identifies the requirements for the operation of the National Security Systems (NSS) Public Key Infrastructure (PKI) which provides certificates for use on Secret networks to protect resources while achieving interoperability and controlled information sharing.
	CNSSI 3006 Operational Security Doctrine for Global Positioning System Precise Positioning Service User Equipment Release Date: 02/05/2018, File Size: 865949 CNSSI 3006 establishes the minimum national security standards for the handling and control of GPS PPS UE and associated communications security (COMSEC) material. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI-3006A (U) International Security Doctrine For Global Positioning System (GPS) Protected Positioning Service (PPS) User Equipment (UE) Key Handling For Allied Use Release Date: 10/10/2023, File Size: 876560 (U//FOUO) This security doctrine contains minimum security standards for the protection and use of the Global Positioning System (GPS) Protected Positioning Service (PPS) User Equipment (UE) and communications security (COMSEC) material. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NTISSI 3013 Operational Security Doctrine for the Secure Telephone Unit III (STU-III) Type 1 Terminal Release Date: 01/11/2006, File Size: 78335 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 3019 Operational Security Doctrine for the FASTLANE (KG-75 and KG-75A) Release Date: 01/10/2006, File Size: 495138 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSS-18-19 FASTLANE KG-75 and KG-75A Operational Systems Security Doctrine Release Date: 03/25/2019, File Size: 244454 Given the outdated versions are still required for field equipment no longer in production and out of warranty the issuance has been given a reissue date and remains in the library.
	CNSSI 3021 Operational Security Doctrine for the AN/CYZ-10/10A Data Transfer Device Release Date: 01/10/2006, File Size: 1212961 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3021 (U) Operational Security Doctrine for the AN/CYZ-10/10A Data Transfer Device Release Date: 02/01/2024, File Size: 759108 (U) This Instruction provides minimum security standards for the protection and use of the AN/CYZ-10/10A Data Transfer Device (DTD) and associated Communications Security (COMSEC) material. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 3022 OPSEC Doctrine for TEDs KG-81, KG-94, KG-95, KG-194, and KIV-19 in Stand Alone Applications Release Date: 01/10/2006, File Size: 714252 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3024 (U) Operational Security Doctrine for KG-189 Strategic Trunk Encryptor Release Date: 04/17/2024, File Size: 785083 (U//FOUO) This doctrine establishes the minimum national security standards for safeguarding, controlling, and using the KG-189 and its associated key. This Instruction supersedes National Security Telecommunications and Information Systems Security (NSTISSI) 3024, dated January 2000. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3025 (U) OPERATIONAL SECURITY DOCTRINE FOR CIPHERTAC2000 (CTAC2000) Release Date: 05/05/2023, File Size: 856306 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 3026 Operational Security Doctrine for the Motorola Network Encryption System (NES) Release Date: 01/27/2023, File Size: 460347 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 3028 Operational Security Doctrine for the FORTEZZA User Personal Computer Memory Card International Association (PCMCIA) Card Release Date: 11/16/2022, File Size: 720133 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3029 Operational Systems Security Doctrine for TACLANE (KG-175) Release Date: 07/31/2023, File Size: 885000 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI No. 3030 Operations Systems Security Doctrine for the FORTEZZA PLUS (KOV-14) Cryptographic Card and Associated Secure Terminal Equipment (STE) Release Date: 11/16/2022, File Size: 677498 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 3030, 2006 Amendment Amendment to NSTISSI-3030 Release Date: 10/18/2006, File Size: 68400 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3031 Operation Systems Security Doctrine for the Sectera In-Line Network Encryptor (KG-235) Release Date: 01/10/2006, File Size: 420710 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3031 (U) OPERATIONAL SYSTEMS SECURITY DOCTRINE FOR THE SECTERATM IN-LINE NETWORK ENCRYPTOR (KG-235) Release Date: 02/15/2023, Version: Feb 2023, File Size: 794246 (U) The Committee on National Security Systems, pursuant to its authority under National Security Directive 42 (Reference a), is issuing this Instruction (CNSSI) No. 3031, Operational Systems Security Doctrine for the Sectera TM In-Line Network Encryptor (KG-235, to prescribe the minimum security standards for the protection and use of the KG-235. This CNSSI also establishes the minimum national requirements for safeguarding and controlling COMSEC material. These requirements apply to all COMSEC material controlled within the COMSEC Material Control System (CMCS), regardless of where it is used. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3032 Operational Security Doctrine for the VIASAT Internet Protocol (VIP) Crypto Version 1 (KIV-21) Release Date: 01/10/2006, File Size: 292921 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3034 Operational Security Doctrine for the SECNET 11 Wireless Local Area Network Interface Card Release Date: 08/31/2023, File Size: 857695 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 3035 OPERATIONAL SECURITY DOCTRINE FOR THE REDEAGLE KG-245 IN-LINE NETWORK ENCRYPTOR (INE) Release Date: 04/10/2023, File Size: 829644 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4000 Maintenance of Communications Security (COMSEC) Equipment Release Date: 07/31/2023, File Size: 213378 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4001 Controlled Cryptographic Items Release Date: 08/01/2023, File Size: 924785 Prescribes the handling and control of CCI. The ANNEXES provide conditions for allowing foreign national access to CCI; criteria for selecting a commercial carrier to transport CCI; accounting requirements for CCI; modified requirements for CCI used to support network security systems; definitions of specialized terms; and a listing of national-level documents applicable to this Instruction. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NSTISSI 4002 NSTISSI 4002 Release Date: 04/24/2017, File Size: 89578 This document is classified and can only be gotten by request to the CNSS Secretariat, please see attached document. NSTISSI 4002 has not been re-released, the date showing automatically records when an addition has been made to the description for this document. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NTISSI 4002, 2009 Amendment Pen and Ink Changes for NTISSI 4002 Release Date: 07/15/2009, File Size: 51245 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	NTISSI 4002, 2004 Amendment Pen and Ink Changes for NTISSI 4002 9 Jul 2004 Release Date: 01/10/2006, File Size: 91091 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4003 Reporting and Evaluating Communications Security (COMSEC) Incidents Release Date: 09/13/2023, File Size: 1201643 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4004.1 Destruction and Emergency Protection Procedures for COMSEC and Classified Material Release Date: 01/10/2008, File Size: 387331 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4005 Safeguarding COMSEC Facilities and Materials Release Date: 08/22/2011, File Size: 743948 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4005 Amendment CNSS-008-14 Amendment to CNSSI 4005 Release Date: 05/27/2014, File Size: 337205 This amendment addresses grades for military COMSEC Managers. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4005 (U) Safeguarding Communications Security (COMSEC) Facilities and Materials Release Date: 03/20/2024, Version: 2024 Final, File Size: 1414272 (U) The Committee on National Security Systems, pursuant to its authority under National Security Directive 42, “National Policy for the Security of National Security Telecommunications and Information Systems”, (Reference a), is issuing this Committee on National Security System Instruction (CNSSI) No. 4005, “Safeguarding Communications Security (COMSEC) Facilities and Materials”, to prescribe the minimum national requirements for the construction, approval, and security of facilities wherein the primary purpose is generating, storing, repairing, or using communications security (COMSEC) material. This CNSSI also establishes the minimum national requirements for safeguarding and controlling COMSEC material. These requirements apply to all COMSEC material controlled within the COMSEC Material Control System (CMCS), regardless of where it is used. This Instruction supersedes CNSSI No. 4005, Safeguarding Communications Security (COMSEC) Facilities, dated August 2011. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above. This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4006 CONTROLLING AUTHORITIES FOR SYMMETRIC COMMUNICATIONS SECURITY (COMSEC) KEYING MATERIAL Release Date: 03/31/2023, File Size: 1118725 This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4007 Communications Security (COMSEC) Utility Program Release Date: 05/31/2023, File Size: 472259
	CNSSI 4008 Program for the Management and Use of National Reserve Information Assurance Security Equipment Release Date: 03/31/2023, File Size: 634016
	CNSSI 4009 Committee on National Security Systems (CNSS) Glossary Release Date: 03/07/2022, File Size: 1930551 This revision of CNSSI No. 4009 incorporates many new terms submitted by the CNSS Membership. Most of the terms from the 2015 version of the Glossary remain, but a number of terms have updated definitions in order to remove inconsistencies among the communities.
	NSTISSI 4011 National Training Standard for Information Systems Security (INFOSEC) Professionals Release Date: 06/20/1994, File Size: 51392
	CNSSI 4012 National Information Assurance Training Standard for Senior Systems Managers Release Date: 06/01/2004, File Size: 561089 Supersedes NSTISSI No. 4012, dated August 1997
	CNSSI 4013 National Information Assurance Training Standard For System Administrators (SA) Release Date: 03/01/2004, File Size: 1196530
	CNSSI 4014 Information Assurance Training Standard for Information Systems Security Officers Release Date: 04/01/2004, File Size: 895212 Supersedes NSTISSI No. 4014, dated August 1997
	NSTISSI 4015 National Training Standard for Systems Certifiers Release Date: 12/01/2000, File Size: 304843
	CNSSI 4016 National Information Assurance Training Standard For Risk Analysts Release Date: 11/01/2005, File Size: 641762
	CNSSI 4031 Cryptographic High Value Products (CHVP) Release Date: 10/31/2023, File Size: 364052 The Committee on National Security Systems Instruction (CNSSI) 4031, “Cryptographic High Value Products,” establishes the category of Cryptographic High Value Product (CHVP) as designated by NSA, to secure SECRET and Below National Security Systems. CHVPs require less administrative burden and control than the existing categories of Controlled Cryptographic Items (CCI) and classified products.
	CNSSI 4032 Management and Use of Secure Data Network Systems Release Date: 07/31/2023, File Size: 898911 (U) The requirements of this Instruction apply to all U.S. Government Executive Branch departments, agencies, and their contractors, consultants, and licensees, who own, procure, use, operate, or maintain national security systems as defined by CNSSI No. 4009, Committee on National Security Systems (CNSS) This document is designated FOUO. To access protected FOUO content in the CNSS Library, you must login with a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate correctly installed in your browser and click on the "CAC/PKI/PIV Login" button above.
	CNSSI 4033 Nomenclature for Communications Security Material Release Date: 11/01/2012, File Size: 325581 Supersedes NSTISSAM/COMSEC 1-93, dated 14 October 1993
	CNSSI 5000 VOICE OVER INTERNET PROTOCOL (VoIP) TELEPHONY Release Date: 09/21/2021, File Size: 2930086
	CNSSI 5001 Type-Acceptance Program for Voice Over Internet Protocol (VoIP) Telephones Release Date: 12/01/2007, File Size: 242521
	CNSSI 5002 Telephony Isolation Used for Unified Communnications Implementations Within Physically Protected Spaces Release Date: 12/18/2019, File Size: 613642
	CNSSI 5006 National Instruction for Approved Telephone Equipment Release Date: 09/01/2011, File Size: 536527 Supersedes TSG Standard 6, dated June 2006
	CNSSI 5007 Telephone and Security Equipment Submission and Evaluation Procedures Release Date: 08/15/2023, File Size: 423461
	CNSSI 6002 Instruction for Protection of Government Contractor Telecommunications Release Date: 01/31/2023, File Size: 806884
	CNSSI 7003 Protected Distribution Systems Release Date: 09/30/2015, File Size: 616676
	CNSS-19-19 COMSEC Utility Program Reissue Date Memo Release Date: 03/25/2019, File Size: 242745 Due to the need for field equipment no longer in production and equipment out of warranty the CNSSI 4007 has been given a new reissue date and remains in the library.
	CNSS-20-19 Equipment Material Reissue Memo Release Date: 03/25/2019, File Size: 243786 The outdated version is still required for field equipment no longer in production and out of warranty therefore the document has been given a reissue date.

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2024	2025	2026