The system will be configured to prevent users from mapping local COM ports and redirecting data from the Remote Desktop Session Host to local COM ports. (Remote Desktop Services Role)

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The system will be configured to prevent users from mapping local COM ports and redirecting data from the Remote Desktop Session Host to local COM ports. (Remote Desktop Services Role)

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-15997	5.074	SV-32501r1_rule		Medium

Description
This check verifies that the system is configured to prevent users from mapping local COM ports and redirecting data from the Remote Desktop Session Host to local COM ports.

STIG	Date
Windows Server 2008 R2 Member Server Security Technical Implementation Guide	2018-09-05

Details

Check Text ( C-32905r1_chk )
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: fDisableCcm Type: REG_DWORD Value: 1

Fix Text (F-28916r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Device and Resource Redirection “Do not allow COM port redirection” to “Enabled”.