The Windows Firewall with Advanced Security must display notifications when a program is blocked from receiving an inbound connection when connected to a public network.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17440	WNFWA-000022	SV-54910r1_rule	ECSC-1	Low

Description
A firewall provides a line of defense against attack. To be effective, it must be enabled and properly configured. The display of notifications to the user when a program is blocked from receiving an inbound connection on a public network must be enabled to alert the user of potential issues.

STIG	Date
Windows Firewall with Advanced Security Security Technical Implementation Guide	2014-01-07

Details

Check Text ( C-48668r2_chk )
Verify the registry value below. If this registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\WindowsFirewall\PublicProfile\ Value Name: DisableNotifications Type: REG_DWORD Value: 0

Fix Text (F-47778r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Windows Firewall with Advanced Security -> Windows Firewall with Advanced Security -> Windows Firewall Properties (this link will be in the right pane) -> Public Profile Tab -> Settings (select Customize) -> Firewall settings, "Display a notification" to "Yes".