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Check: WN11-CC-000290

Microsoft Windows 11 STIG: WN11-CC-000290 (in versions v1 r6 through v1 r1)

Title

Remote Desktop Services must be configured with the client connection encryption set to the required level. (Cat II impact)

Discussion

Remote connections must be encrypted to prevent interception of data or sensitive information. Selecting "High Level" will ensure encryption of Remote Desktop Services sessions in both directions.

Check Content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: MinEncryptionLevel Value Type: REG_DWORD Value: 3

Fix Text

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security >> "Set client connection encryption level" to "Enabled" and "High Level".

Additional Identifiers

Rule ID: SV-253406r877398_rule

Vulnerability ID: V-253406

Group Title: SRG-OS-000033-GPOS-00014

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000068	The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-17 (2)	Protection Of Confidentiality / Integrity Using Encryption