I - Mission Critical Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Systems must be monitored for remote desktop logons.
<VulnDiscussion>Remote Desktop activity for administration should be limited to specific administrators, and from limited management workstat...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Active Directory data must be backed up daily for systems with a Risk Management Framework categorization for Availability of moderate or high. Systems with a categorization of low must be backed up weekly.
<VulnDiscussion>Failure to maintain a current backup of directory data could make it difficult or impossible to recover from incidents includ...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Each cross-directory authentication configuration must be documented.
<VulnDiscussion>Active Directory (AD) external, forest, and realm trust configurations are designed to extend resource access to a wider rang...Rule Low Severity -
SRG-OS-000423
<GroupDescription></GroupDescription>Group -
A VPN must be used to protect directory network traffic for directory service implementation spanning enclave boundaries.
<VulnDiscussion>The normal operation of AD requires the use of IP network ports and protocols to support queries, replication, user authentic...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Accounts from outside directories that are not part of the same organization or are not subject to the same security policies must be removed from all highly privileged groups.
<VulnDiscussion>Membership in certain default directory groups assigns a high privilege level for access to the directory. In AD, membership ...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Inter-site replication must be enabled and configured to occur at least daily.
<VulnDiscussion>Timely replication makes certain that directory service data is consistent across all servers that support the same scope of ...Rule Medium Severity -
SRG-OS-000032
<GroupDescription></GroupDescription>Group -
If a VPN is used in the AD implementation, the traffic must be inspected by the network Intrusion detection system (IDS).
<VulnDiscussion>To provide data confidentiality, a VPN is configured to encrypt the data being transported. While this protects the data, som...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Active Directory implementation information must be added to the organization contingency plan where the Risk Management Framework categorization for Availability is moderate or high.
<VulnDiscussion>When an incident occurs that requires multiple Active Directory (AD) domain controllers to be rebuilt, it is critical to unde...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Active Directory must be supported by multiple domain controllers where the Risk Management Framework categorization for Availability is moderate or high.
<VulnDiscussion>In Active Directory (AD) architecture, multiple domain controllers provide availability through redundancy. If an AD domain ...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The impact of CPCON changes on the cross-directory authentication configuration must be considered and procedures documented.
<VulnDiscussion>When incidents occur that require a change in the Cyber Protection Conditions (CPCON) with the release of USSCI 5200-13 statu...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
Windows Server domain controllers must have Kerberos logging enabled with servers hosting Active Directory Certificate Services (AD CS).
<VulnDiscussion>Although Kerberos logging can be used for troubleshooting, it can also provide security information for successful and failed...Rule Medium Severity
Node 2
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