The Windows Firewall must be enabled for the Private Profile.

From Windows Vista Security Technical Implementation Guide

Part of Windows Firewall Private - Enable Firewall

Associated with IA controls: ECSC-1

SV-18472r2_rule The Windows Firewall must be enabled for the Private Profile.

Vulnerability discussion

A firewall provides a line of defense against attack. To be effective, it must be enabled and properly configured. This setting enables the firewall when connected to a private network.

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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) -> Private Profile Tab -> State, "Firewall State" to "On (recommended)". Configure a comparable setting if a third-party firewall is used.

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