I - Mission Critical Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000395-NDM-000310
Group -
The network device 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 -
SRG-APP-000148-NDM-000346
Group -
The network device 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 database for use when the authentication server i...Rule Medium Severity -
SRG-APP-000065-NDM-000214
Group -
The network device must be configured to enforce the limit of three consecutive invalid logon 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, is reduced.Rule Medium Severity -
SRG-APP-000142-NDM-000245
Group -
The network device 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 -
SRG-APP-000395-NDM-000347
Group -
The network device must authenticate Network Time Protocol (NTP) sources using authentication that is cryptographically based.
If Network Time Protocol 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 mak...Rule Medium Severity -
SRG-APP-000156-NDM-000250
Group -
The network device 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 -
SRG-APP-000516-NDM-000335
Group -
The network device must be configured with both an ingress and egress ACL.
Changes to the hardware or software components of the network device can have significant effects on the overall security of the network. Therefore, only qualified and authorized individuals should...Rule Medium Severity -
SRG-APP-000373-NDM-000298
Group -
The network device 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 -
SRG-APP-000164-NDM-000252
Group -
The password configured on the WLAN access point for key generation and client access must be set to a 15-character or longer complex password as required by USCYBERCOM CTO 07-15 Rev1.
If the organization does not use a strong passcode for client access, an adversary is significantly more likely to be able to obtain it. Once this occurs, the adversary may be able to obtain full n...Rule Medium Severity
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