II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000001-NDM-000200
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to limit the number of concurrent sessions to the Configuration Utility to 10 or an organization-defined number.
<VulnDiscussion>Device management includes the ability to control the number of administrators and management sessions that manage a device. ...Rule Medium Severity -
SRG-APP-000317-NDM-000282
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must terminate shared/group account credentials when members leave the group.
<VulnDiscussion>A shared/group account credential is a shared form of authentication that allows multiple individuals to access the network d...Rule Medium Severity -
SRG-APP-000148-NDM-000346
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance 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.
<VulnDiscussion>Authentication for administrative (privileged level) access to the device is required at all times. An account can be created...Rule Medium Severity -
SRG-APP-000033-NDM-000212
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to assign appropriate user roles or access levels to authenticated users.
<VulnDiscussion>Successful identification and authentication must not automatically give an entity full access to a network device or securit...Rule High Severity -
SRG-APP-000343-NDM-000289
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to audit the execution of privileged functions such as accounts additions and changes.
<VulnDiscussion>Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external enti...Rule Medium Severity -
SRG-APP-000065-NDM-000214
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to enforce the limit of three consecutive invalid logon attempts, after which time it must block any login attempt for at least 15 minutes.
<VulnDiscussion>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...Rule Medium Severity -
SRG-APP-000068-NDM-000215
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to display the Standard Mandatory DOD Notice and Consent Banner upon access to the TMOS User Interface.
<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-000357-NDM-000293
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must manage local audit storage capacity in accordance with organization-defined audit record storage requirements.
<VulnDiscussion>To ensure network devices have a sufficient storage capacity in which to write the audit logs, they need to be able to alloca...Rule Low Severity -
SRG-APP-000515-NDM-000325
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must generate audit records and send records to redundant central syslog servers that are separate from the appliance.
<VulnDiscussion>Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Without generating audi...Rule High Severity -
F5BI-DM-300036
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance 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-000374-NDM-000299
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must record time stamps for audit records that can be mapped to Coordinated Universal Time (UTC).
<VulnDiscussion>If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analys...Rule Medium Severity -
SRG-APP-000131-NDM-000243
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to prevent the installation of patches, service packs, or application components without verification the software component has been digitally signed using a certificate that is recognized and approved by the organization.
<VulnDiscussion>Changes to any software components can have significant effects on the overall security of the network device. Verifying soft...Rule Medium Severity -
SRG-APP-000516-NDM-000336
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to use at least two authentication servers to authenticate administrative users.
<VulnDiscussion>Centralized management of authentication settings increases the security of remote and nonlocal access methods. This control ...Rule High Severity -
SRG-APP-000516-NDM-000351
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be running an operating system release that is currently supported by the vendor.
<VulnDiscussion>Network devices running an unsupported operating system lack current security fixes required to mitigate the risks associated...Rule High Severity -
SRG-APP-000516-NDM-000344
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance 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-000142-NDM-000245
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to prohibit the use of all unnecessary and/or nonsecure functions, ports, protocols, and/or services.
<VulnDiscussion>To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embeddi...Rule High Severity -
SRG-APP-000149-NDM-000247
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must be configured to use multifactor authentication (MFA) for interactive logins.
<VulnDiscussion>MFA is when two or more factors are used to confirm the identity of an individual who is requesting access to digital informa...Rule High Severity -
SRG-APP-000395-NDM-000347
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must authenticate Network Time Protocol (NTP) sources using authentication that is cryptographically based.
<VulnDiscussion>If NTP is not authenticated, an attacker can introduce a rogue NTP server. This rogue server can then be used to send incorre...Rule Medium Severity -
SRG-APP-000164-NDM-000252
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance 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 -
The F5 BIG-IP appliance 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 -
The F5 BIG-IP appliance 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 -
The F5 BIG-IP appliance 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 -
The F5 BIG-IP appliance 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-000170-NDM-000329
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must require that when a password is changed, the characters are changed in at least eight of the positions within the password.
<VulnDiscussion>If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of pass...Rule Medium Severity -
SRG-APP-000400-NDM-000313
<GroupDescription></GroupDescription>Group -
The F5 BIG-IP appliance must prohibit the use of cached authenticators after eight hours or less.
<VulnDiscussion>Some authentication implementations can be configured to use cached authenticators. If cached authentication information is ...Rule Medium Severity
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