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The Windows Firewall with Advanced Security log size must be configured for private network connections.


Finding ID Version Rule ID IA Controls Severity
V-17435 WNFWA-000017 SV-54903r3_rule Low
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 private connection will be set to ensure enough capacity is allocated for audit data.
Windows Firewall with Advanced Security Security Technical Implementation Guide 2016-07-22


Check Text ( None )
Fix Text (F-63509r3_fix)
The preferred method of configuring the firewall settings is with a policy, particularly in a domain environment.

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 -> Logging (select Customize), "Size limit (KB)" to "16,384" or greater.

In addition to using policies, systems may also be configured using the firewall GUI or Netsh commands. These methods may be more appropriate for standalone systems.
The configuration settings in the GUI are the same as those specified in the policy above. Windows Firewall Properties will be a link in the center pane after opening Windows Firewall with Advanced Security.

The following Netsh command may also be used to configure this setting:
"Netsh advfirewall set privateprofile logging maxfilesize 16384" or greater.