NIST Special Publication 800-171 Revision 2| 3.5.8 | Prohibit password reuse for a specified number of generations |
| 3.5.9 | Allow temporary password use for system logons with an immediate change to a permanent password |
| 3.5.10 | Store and transmit only cryptographically-protected passwords |
| 3.5.11 | Obscure feedback of authentication information |
| 3.6.1 | Establish an operational incident-handling capability for organizational systems that includes preparation, detection, analysis, containment, recovery, and user response activities |
| 3.6.2 | Track, document, and report incidents to designated officials and/or authorities both internal and external to the organization |
| 3.6.3 | Test the organizational incident response capability |
| 3.7.1 | Perform maintenance on organizational systems |
| 3.7.2 | Provide controls on the tools, techniques, mechanisms, and personnel used to conduct system maintenance |
| 3.7.3 | Ensure equipment removed for off-site maintenance is sanitized of any CUI |
| 3.7.4 | Check media containing diagnostic and test programs for malicious code before the media are used in organizational systems |
| 3.7.5 | Require multifactor authentication to establish nonlocal maintenance sessions via external network connections and terminate such connections when nonlocal maintenance is complete |
| 3.7.6 | Supervise the maintenance activities of maintenance personnel without required access authorization |
| 3.8.1 | Protect (i.e., physically control and securely store) system media containing CUI, both paper and digital |
| 3.8.2 | Limit access to CUI on system media to authorized users |
| 3.8.3 | Sanitize or destroy system media containing CUI before disposal or release for reuse |
| 3.8.4 | Mark media with necessary CUI markings and distribution limitations |
| 3.8.5 | Control access to media containing CUI and maintain accountability for media during transport outside of controlled areas |
| 3.8.6 | Implement cryptographic mechanisms to protect the confidentiality of CUI stored on digital media during transport unless otherwise protected by alternative physical safeguards |
| 3.8.7 | Control the use of removable media on system components |
| 3.8.8 | Prohibit the use of portable storage devices when such devices have no identifiable owner |
| 3.8.9 | Protect the confidentiality of backup CUI at storage locations |
| 3.9.1 | Screen individuals prior to authorizing access to organizational systems containing CUI |
| 3.9.2 | Ensure that organizational systems containing CUI are protected during and after personnel actions such as terminations and transfers |
| 3.10.1 | Limit physical access to organizational systems, equipment, and the respective operating environments to authorized individuals |
| 3.10.2 | Protect and monitor the physical facility and support infrastructure for organizational systems |
| 3.10.3 | Escort visitors and monitor visitor activity |
| 3.10.4 | Maintain audit logs of physical access |
| 3.10.5 | Control and manage physical access devices |
| 3.10.6 | Enforce safeguarding measures for CUI at alternate work sites |
| 3.11.1 | Periodically assess the risk to organizational operations (including mission, functions, image, or reputation), organizational assets, and individuals, resulting from the operation of organizational systems and the associated processing, storage, or transmission of CUI |
| 3.11.2 | Scan for vulnerabilities in organizational systems and applications periodically and when new vulnerabilities affecting those systems and applications are identified |
| 3.11.3 | Remediate vulnerabilities in accordance with risk assessments |
| 3.12.1 | Periodically assess the security controls in organizational systems to determine if the controls are effective in their application |
| 3.12.2 | Develop and implement plans of action designed to correct deficiencies and reduce or eliminate vulnerabilities in organizational systems |
| 3.12.3 | Monitor security controls on an ongoing basis to ensure the continued effectiveness of the controls |
| 3.12.4 | Develop, document, and periodically update system security plans that describe system boundaries, system environments of operation, how security requirements are implemented, and the relationships with or connections to other systems |
| 3.13.1 | Monitor, control, and protect communications (i.e., information transmitted or received by organizational systems) at the external boundaries and key internal boundaries of organizational systems |
| 3.13.2 | Employ architectural designs, software development techniques, and systems engineering principles that promote effective information security within organizational systems |
| 3.13.3 | Separate user functionality from system management functionality |
| 3.13.4 | Prevent unauthorized and unintended information transfer via shared system resources |
| 3.13.5 | Implement subnetworks for publicly accessible system components that are physically or logically separated from internal networks |
| 3.13.6 | Deny network communications traffic by default and allow network communications traffic by exception (i.e., deny all, permit by exception) |
| 3.13.7 | Prevent remote devices from simultaneously establishing non-remote connections with organizational systems and communicating via some other connection to resources in external networks (i.e., split tunneling) |
| 3.13.8 | Implement cryptographic mechanisms to prevent unauthorized disclosure of CUI during transmission unless otherwise protected by alternative physical safeguards |
| 3.13.9 | Terminate network connections associated with communications sessions at the end of the sessions or after a defined period of inactivity |
| 3.13.10 | Establish and manage cryptographic keys for cryptography employed in organizational systems |
| 3.13.11 | Employ FIPS-validated cryptography when used to protect the confidentiality of CUI |
| 3.13.12 | Prohibit remote activation of collaborative computing devices and provide indication of devices in use to users present at the device |
| 3.13.13 | Control and monitor the use of mobile code |
