The Windows Firewall log size must be configured for the Public Profile.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
WN12-FW-000027	WN12-FW-000027	WN12-FW-000027_rule		Low

Description
A firewall provides a line of defense against attack. To be effective, it must be enabled and properly configured. The firewall log file size for a public network connection will be set to ensure enough capacity is allocated for audit data.

STIG	Date
Microsoft Windows Server 2012 Domain Controller Security Technical Implementation Guide	2013-07-25

Details

Check Text ( C-WN12-FW-000027_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: \Software\Policies\Microsoft\WindowsFirewall\PublicProfile\Logging\ Value Name: LogFileSize Type: REG_DWORD Value: 16384 (or greater) If a third-party firewall is used, verify a comparable setting has been implemented.

Fix Text (F-WN12-FW-000027_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 -> Logging (select Customize), "Size limit (KB)" to "16,384" (or greater). Configure a comparable setting if a third-party firewall is used.