The Windows Firewall must display notifications when a program is blocked from receiving an inbound connection for the Domain Profile.

From Windows Vista Security Technical Implementation Guide

Part of Windows Firewall Domain - Display Notifications

Associated with IA controls: ECSC-1

SV-18476r2_rule The Windows Firewall must display notifications when a program is blocked from receiving an inbound connection for the Domain Profile.

Vulnerability discussion

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 in the domain must be enabled to alert the user of potential issues.

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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) -> Domain Profile Tab -> Settings (select Customize) -> Firewall settings, "Display Notifications" to "Yes (default)". Configure a comparable setting if a third-party firewall is used.

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