I - Mission Critical Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000001-NDM-000200
<GroupDescription></GroupDescription>Group -
Sentry must limit the number of concurrent sessions for the CLISH interface to an organization-defined number for each administrator account and/or administrator account type.
<VulnDiscussion>Device management includes the ability to control the number of administrators and management sessions that manage a device. ...Rule Medium Severity -
SRG-APP-000001-NDM-000200
<GroupDescription></GroupDescription>Group -
Sentry must be configured to limit the network access of the Sentry System Manager Portal behind the corporate firewall and whitelist source IP range.
<VulnDiscussion>Device management includes the ability to control the number of administrators and management sessions that manage a device. ...Rule Medium Severity -
SRG-APP-000003-NDM-000202
<GroupDescription></GroupDescription>Group -
Sentry must initiate a session lock after a 15-minute period of inactivity.
<VulnDiscussion>A session lock is a temporary network device or administrator-initiated action taken when the administrator stops work but do...Rule Medium Severity -
SRG-APP-000038-NDM-000213
<GroupDescription></GroupDescription>Group -
Sentry must enforce approved authorizations for controlling the flow of management information within the network device based on information flow control policies.
<VulnDiscussion>A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design...Rule Low Severity -
SRG-APP-000065-NDM-000214
<GroupDescription></GroupDescription>Group -
Sentry 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.
<VulnDiscussion>By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise...Rule Low Severity -
SRG-APP-000068-NDM-000215
<GroupDescription></GroupDescription>Group -
Sentry must display the Standard Mandatory DOD Notice and Consent Banner in the Sentry web interface before granting access to the device.
<VulnDiscussion>Display of the DOD-approved use notification before granting access to the network device ensures privacy and security notifi...Rule Medium Severity -
SRG-APP-000149-NDM-000247
<GroupDescription></GroupDescription>Group -
Sentry must be configured to use DOD PKI as multi-factor authentication (MFA) for interactive logins.
<VulnDiscussion>Multi-factor authentication (MFA) is when two or more factors are used to confirm the identity of an individual who is reques...Rule High Severity -
SRG-APP-000164-NDM-000252
<GroupDescription></GroupDescription>Group -
Sentry device must enforce a minimum 15-character password length.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000166-NDM-000254
<GroupDescription></GroupDescription>Group -
Sentry must enforce password complexity by requiring that at least one uppercase character be used.
<VulnDiscussion>Use of a complex passwords helps to increase the time and resources required to compromise the password. Password complexity,...Rule Medium Severity -
SRG-APP-000167-NDM-000255
<GroupDescription></GroupDescription>Group -
Sentry must enforce password complexity by requiring that at least one lowercase character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-APP-000168-NDM-000256
<GroupDescription></GroupDescription>Group -
Sentry must enforce password complexity by requiring that at least one numeric character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-APP-000169-NDM-000257
<GroupDescription></GroupDescription>Group -
Sentry must enforce password complexity by requiring that at least one special character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-APP-000177-NDM-000263
<GroupDescription></GroupDescription>Group -
Sentry, for PKI-based authentication, must be configured to map validated certificates to unique user accounts.
<VulnDiscussion>Without mapping the PKI certificate to a unique user account, the ability to determine the identities of individuals or the s...Rule High Severity -
SRG-APP-000179-NDM-000265
<GroupDescription></GroupDescription>Group -
Sentry must use FIPS 140-2 approved algorithms for authentication to a cryptographic module.
<VulnDiscussion>Unapproved mechanisms that are used for authentication to the cryptographic module are not validated and therefore cannot be ...Rule High Severity -
SRG-APP-000190-NDM-000267
<GroupDescription></GroupDescription>Group -
Sentry must terminate all network connections associated with a device management session at the end of the session, or the session must be terminated after 10 minutes of inactivity except to fulfill documented and validated mission requirement.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule High Severity -
SRG-APP-000224-NDM-000270
<GroupDescription></GroupDescription>Group -
Sentry must generate unique session identifiers using a FIPS 140-2 approved random number generator.
<VulnDiscussion>Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generatio...Rule Medium Severity -
SRG-APP-000360-NDM-000295
<GroupDescription></GroupDescription>Group -
Sentry must generate an immediate real-time alert of all audit failure events requiring real-time alerts.
<VulnDiscussion>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....Rule Low Severity -
SRG-APP-000373-NDM-000298
<GroupDescription></GroupDescription>Group -
Sentry must be configured to synchronize internal information system clocks using redundant authoritative time sources.
<VulnDiscussion>The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run ...Rule Medium Severity -
SRG-APP-000395-NDM-000310
<GroupDescription></GroupDescription>Group -
The Sentry must be configured to authenticate SNMP messages using a FIPS-validated Keyed-Hash Message Authentication Code (HMAC).
<VulnDiscussion>Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. B...Rule Medium Severity -
SRG-APP-000412-NDM-000331
<GroupDescription></GroupDescription>Group -
Sentry must be configured to implement cryptographic mechanisms using a FIPS 140-2 approved algorithm to protect the confidentiality of remote maintenance sessions.
<VulnDiscussion>This requires the use of secure protocols instead of their unsecured counterparts, such as SSH instead of telnet, SCP instead...Rule High Severity -
SRG-APP-000515-NDM-000325
<GroupDescription></GroupDescription>Group -
Sentry must offload audit records onto a different system or media than the system being audited.
<VulnDiscussion>Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common p...Rule Low Severity -
SRG-APP-000516-NDM-000335
<GroupDescription></GroupDescription>Group -
Sentry must enforce access restrictions associated with changes to the system components.
<VulnDiscussion>Changes to the hardware or software components of the network device can have significant effects on the overall security of ...Rule Low Severity -
SRG-APP-000516-NDM-000340
<GroupDescription></GroupDescription>Group -
Sentry must be configured to conduct backups of system level information contained in the information system when changes occur.
<VulnDiscussion>This control requires the network device to support the organizational central backup process for system-level information as...Rule Low Severity -
SRG-APP-000516-NDM-000344
<GroupDescription></GroupDescription>Group -
Sentry must obtain its public key certificates from an appropriate certificate policy through an approved service provider.
<VulnDiscussion>For user certificates, each organization obtains certificates from an approved, shared service provider, as required by OMB p...Rule Medium Severity -
SRG-APP-000516-NDM-000350
<GroupDescription></GroupDescription>Group -
Sentry must be configured to send log data to a central log server for the purpose of forwarding alerts to the administrators and the ISSO.
<VulnDiscussion>Without syslog enabled it will be difficult for an ISSO to correlate the users behavior and identify potential threats within...Rule High Severity
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