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Remote Desktop Services must be configured with the client connection encryption set to High Level.


Overview

Finding ID Version Rule ID IA Controls Severity
V-224948 WN16-CC-000410 SV-224948r569186_rule Medium
Description
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.
STIG Date
Microsoft Windows Server 2016 Security Technical Implementation Guide 2022-03-01

Details

Check Text ( C-26639r465746_chk )
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

Type: REG_DWORD
Value: 0x00000003 (3)
Fix Text (F-26627r465747_fix)
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" with "High Level" selected.