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Terminal Services is not configured with the client connection encryption set to the required level.


Overview

Finding ID Version Rule ID IA Controls Severity
V-3454 5.043 SV-29280r2_rule Medium
Description
Remote connections must be encrypted to prevent interception of data or sensitive information. Selecting “High Level” will ensure encryption of Terminal Services sessions in both directions.
STIG Date
Windows Vista Security Technical Implementation Guide 2016-06-03

Details

Check Text ( C-40665r1_chk )
If the following registry value does not 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 (F-36076r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Terminal Server -> Security “Set Client Connection Encryption Level” to “Enabled” and select “High Level” for the “Encryption Level”.