Separate, NSA-approved (Type 1) cryptography must be used to protect the directory data in transit for directory service implementations at a classified confidentiality level when replication data traverses a network cleared to a lower level than the data.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-224977	WN16-DC-000140	SV-224977r569186_rule		Medium

Description
Directory data that is not appropriately encrypted is subject to compromise. Commercial-grade encryption does not provide adequate protection when the classification level of directory data in transit is higher than the level of the network.

STIG	Date
Microsoft Windows Server 2016 Security Technical Implementation Guide	2021-03-05

Details

Check Text ( C-26668r465833_chk )
This applies to domain controllers. It is NA for other systems. Review the organization network diagram(s) or documentation to determine the level of classification for the network(s) over which replication data is transmitted. Determine the classification level of the Windows domain controller. If the classification level of the Windows domain controller is higher than the level of the networks, review the organization network diagram(s) and directory implementation documentation to determine if NSA-approved encryption is used to protect the replication network traffic. If the classification level of the Windows domain controller is higher than the level of the network traversed and NSA-approved encryption is not used, this is a finding.

Check Text ( C-26668r465833_chk )

This applies to domain controllers. It is NA for other systems.

Review the organization network diagram(s) or documentation to determine the level of classification for the network(s) over which replication data is transmitted.

Determine the classification level of the Windows domain controller.

If the classification level of the Windows domain controller is higher than the level of the networks, review the organization network diagram(s) and directory implementation documentation to determine if NSA-approved encryption is used to protect the replication network traffic.

If the classification level of the Windows domain controller is higher than the level of the network traversed and NSA-approved encryption is not used, this is a finding.

Fix Text (F-26656r465834_fix)
Configure NSA-approved (Type 1) cryptography to protect the directory data in transit for directory service implementations at a classified confidentiality level that transfer replication data through a network cleared to a lower level than the data.