| V-266903 | | AOS must limit the number of concurrent sessions to a maximum of three for each administrator account and/or administrator account type. | Device management includes the ability to control the number of administrators and management sessions that manage a device. Limiting the number of al... |
| V-266908 | | AOS must automatically audit account creation. | Upon gaining access to a network device, an attacker will often first attempt to create a persistent method of reestablishing access. One way to accom... |
| V-266910 | | AOS must enforce approved authorizations for controlling the flow of management information within the network device based on information flow control policies. | A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management informati... |
| V-266911 | | AOS must be configured to enforce the limit of three consecutive invalid login attempts, after which time it must block any login attempt for 15 minutes. | By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, ... |
| V-266912 | | AOS must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the device. | Display of the DOD-approved use notification before granting access to the network device ensures privacy and security notification verbiage used is c... |
| V-266913 | | AOS must retain the Standard Mandatory DOD Notice and Consent Banner on the screen until the administrator acknowledges the usage conditions and takes explicit actions to log on for further access. | The banner must be acknowledged by the administrator prior to the device allowing the administrator access to the network device. This provides assura... |
| V-266930 | | AOS must implement replay-resistant authentication mechanisms for network access to privileged accounts. | A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the applicati... |
| V-266931 | | AOS must enforce a minimum 15-character password length. | Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password ... |
| V-266932 | | AOS must enforce password complexity by requiring that at least one uppercase character be used. | Use of a complex passwords helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measur... |
| V-266933 | | AOS must enforce password complexity by requiring that at least one lowercase character be used. | Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure... |
| V-266934 | | AOS must enforce password complexity by requiring that at least one numeric character be used. | Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure... |
| V-266935 | | AOS must enforce password complexity by requiring that at least one special character be used. | Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure... |
| V-266948 | | AOS must enforce role-based access control policies over defined subjects and objects. | Organizations can create specific roles based on job functions and the authorizations (i.e., privileges) to perform needed operations on organizationa... |
| V-266950 | | AOS must audit the execution of privileged functions. | Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromise... |
| V-266952 | | AOS must generate an immediate real-time alert of all audit failure events requiring real-time alerts. | It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without a real-time aler... |
| V-266953 | | AOS must be configured to synchronize internal information system clocks using redundant authoritative time sources. | The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run mode) and increasingly in... |
| V-266954 | | AOS must record time stamps for audit records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT). | Alerts provide organizations with urgent messages. Real-time alerts provide these messages immediately (i.e., the time from event detection to alert o... |
| V-266958 | | AOS must be configured to authenticate SNMP messages using a FIPS-validated Keyed-Hash Message Authentication Code (HMAC). | Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Bidirectional authenticati... |
| V-266959 | | AOS must prohibit the use of cached authenticators after an organization-defined time period. | Some authentication implementations can be configured to use cached authenticators.
If cached authentication information is out of date, the validi... |
| V-266961 | | AOS must be configured to protect against known types of denial-of-service (DoS) attacks by employing organization-defined security safeguards. | DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or m... |
| V-266966 | | AOS must off-load audit records onto a different system or media than the system being audited. | Information stored in one location is vulnerable to accidental or incidental deletion or alteration.
Off-loading is a common process in information... |
| V-266967 | | AOS must require that when a password is changed, the characters are changed in at least eight of the positions within the password. | If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increa... |
| V-266968 | | AOS must generate log records for a locally developed list of auditable events. | Auditing and logging are key components of any security architecture. Logging the actions of specific events provides a means to investigate an attack... |
| V-266971 | | AOS must be configured to conduct backups of system-level information contained in the information system when changes occur. | System-level information includes default and customized settings and security attributes, including Access Control Lists (ACLs) that relate to the ne... |
| V-266972 | | AOS must support organizational requirements to conduct backups of information system documentation, including security-related documentation, when changes occur or weekly, whichever is sooner. | Information system backup is a critical step in maintaining data assurance and availability. Information system and security-related documentation con... |
| V-266973 | | AOS must obtain its public key certificates from an appropriate certificate policy through an approved service provider. | For user certificates, each organization obtains certificates from an approved, shared service provider, as required by Office of Management and Budge... |
| V-266975 | | AOS must be configured with only one local account to be used as the account of last resort in the event the authentication server is unavailable. | Authentication for administrative (privileged-level) access to the device is required at all times. An account can be created on the device's local da... |
| V-266976 | | AOS must authenticate Network Time Protocol (NTP) sources using authentication that is cryptographically based. | If NTP is not authenticated, an attacker can introduce a rogue NTP server. This rogue server can then be used to send incorrect time information to ne... |
| V-266909 | | AOS must be configured to assign appropriate user roles or access levels to authenticated users. | Successful identification and authentication must not automatically give an entity full access to a network device or security domain. The lack of aut... |
| V-266928 | | AOS must be configured to prohibit the use of all unnecessary and/or nonsecure functions, ports, protocols, and/or services. | To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within d... |
| V-266929 | | AOS must be configured to use DOD public key infrastructure (PKI) as multifactor authentication (MFA) for interactive logins. | MFA is when two or more factors are used to confirm the identity of an individual who is requesting access to digital information resources. Valid fac... |
| V-266937 | | AOS must transmit only encrypted representations of passwords. | Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can ... |
| V-266938 | | AOS must be configured to use DOD-approved Online Certificate Status Protocol (OCSP) responders or Certificate Revocation Lists (CRLs) to validate certificates used for public key infrastructure (PKI)-based authentication. | Once issued by a DOD certificate authority (CA), PKI certificates are typically valid for three years or less within the DOD. However, there are many ... |
| V-266940 | | AOS must use FIPS 140-2/140-3 approved algorithms for authentication to a cryptographic module. | Unapproved mechanisms that are used for authentication to the cryptographic module are not validated and therefore cannot be relied on to provide conf... |
| V-266941 | | AOS must terminate all network connections associated with a device management session at the end of the session, or the session must be terminated after five minutes of inactivity except to fulfill documented and validated mission requirements. | Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management se... |
| V-266970 | | AOS must be configured to use at least two authentication servers for the purpose of authenticating users prior to granting administrative access. | Centralized management of authentication settings increases the security of remote and nonlocal access methods. This control is particularly important... |
| V-266977 | | AOS must be configured to send log data to at least two central log servers for the purpose of forwarding alerts to the administrators and the information system security officer (ISSO). | The aggregation of log data kept on a syslog server can be used to detect attacks and trigger an alert to the appropriate security personnel. The stor... |
