HPE Aruba Networking AOS NDM Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-APP-000395-NDM-000347
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SRG-APP-000516-NDM-000350
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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 allowed administrators and sessions per administr...Rule Medium Severity -
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 accomplish this is to create a new account. Noti...Rule Medium Severity -
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 authorization-based access control could result in...Rule High Severity -
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 information flow is not enforced based on approved autho...Rule Medium Severity -
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 consistent with applicable federal laws, Executi...Rule Medium Severity -
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 assurance that the administrator has seen the message...Rule Medium Severity -
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 data types), organizations must disable unused o...Rule High Severity -
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 application validating the user credentials must not be ...Rule Medium Severity -
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 length is one factor of several that helps to d...Rule Medium Severity -
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 measure of the effectiveness of a password in resisti...Rule Medium Severity -
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 of the effectiveness of a password in resistin...Rule Medium Severity -
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 reasons a certificate may become invalid before...Rule High Severity -
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 confidentiality or integrity, and DOD data may be c...Rule High Severity -
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 session enabled on the console or console port th...Rule High Severity -
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 inaccurate time stamps on audit events and other ...Rule Medium Severity -
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 authentication provides stronger safeguards to validate the...Rule Medium Severity -
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 must operate at degraded capacity. This requi...Rule Medium Severity -
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 increasing the window of opportunity for attempts at ...Rule Medium Severity -
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 protection against the insider threat. Wit...Rule High Severity -
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 network device configuration, as well as software...Rule Medium Severity -
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 network devices, which will make log timestamps i...Rule Medium Severity -
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 stored log data can be used to detect weaknesses in...Rule High Severity
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