Outgoing secure channel traffic must be signed when possible.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-226281	WN12-SO-000014	SV-226281r569184_rule		Medium

Description
Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but the channel is not integrity checked. If this policy is enabled, outgoing secure channel traffic will be signed.

STIG	Date
Microsoft Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide	2021-03-05

Details

Check Text ( C-27983r476687_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: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: SignSecureChannel Value Type: REG_DWORD Value: 1 If the value for "Domain Member: Digitally encrypt or sign secure channel data (always)" is set to "Enabled", this can be NA (see V-6831).

Check Text ( C-27983r476687_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: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\

Value Name: SignSecureChannel

Value Type: REG_DWORD
Value: 1

If the value for "Domain Member: Digitally encrypt or sign secure channel data (always)" is set to "Enabled", this can be NA (see V-6831).

Fix Text (F-27971r476688_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Digitally sign secure channel data (when possible)" to "Enabled".