Remote Desktop Services will be configured with the client connection encryption set to the required level.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

SV-32491r2_rule Remote Desktop Services will be configured with the client connection encryption set to the required level.

Vulnerability 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 doesn’t exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: MinEncryptionLevel 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”.

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