Microsoft Defender AV must be configured for protocol recognition for network protection.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-213436	WNDF-AV-000012	SV-213436r823044_rule		Medium

Description
This policy setting allows the configuration of protocol recognition for network protection against exploits of known vulnerabilities. If this setting is enabled or not configured, protocol recognition will be enabled. If this setting is disabled, protocol recognition will be disabled.

STIG	Date
Microsoft Defender Antivirus Security Technical Implementation Guide	2022-04-08

Details

Check Text ( C-14661r820155_chk )
Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Network Inspection System >> "Turn on protocol recognition" is set to "Enabled" or "Not Configured". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\NIS Criteria: If the value "DisableProtocolRecognition" is REG_DWORD = 0, this is not a finding. If the value does not exist, this is not a finding. If the value is 1, this is a finding.

Check Text ( C-14661r820155_chk )

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Network Inspection System >> "Turn on protocol recognition" is set to "Enabled" or "Not Configured".

Procedure: Use the Windows Registry Editor to navigate to the following key:
HKLM\Software\Policies\Microsoft\Windows Defender\NIS

Criteria: If the value "DisableProtocolRecognition" is REG_DWORD = 0, this is not a finding.

If the value does not exist, this is not a finding.

If the value is 1, this is a finding.

Fix Text (F-14659r823043_fix)
Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Network Inspection System >> "Turn on protocol recognition" to "Enabled" or "Not Configured".