Terminal Services – Prevent COM Port Redirection (Terminal Server Role).
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-15997 | 5.074 | SV-16941r1_rule | Medium |
| Description |
|---|
| This check verifies that the system is configured to prevent users from mapping local COM ports and redirecting data from the Terminal Server to local COM ports. |
| STIG | Date |
|---|---|
| Windows 2008 Domain Controller Security Technical Implementation Guide | 2019-06-18 |
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-16012r1_fix) |
|---|
| Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Terminal Server -> Device and Resource Redirection “Do not allow COM port redirection” to “Enabled”. |