WNFWA-000017 - Windows Defender Firewall with Advanced Security log size must be configured for private network connections.

Information

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.

Solution

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 Defender Firewall with Advanced Security >> Windows Defender Firewall with Advanced Security >> Windows Defender 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. Microsoft Defender Firewall Properties will be a link in the center pane after opening Microsoft Defender 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.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Windows_Defender_Firewall_V2R2_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-5b., CAT|III, CCI|CCI-000140, Rule-ID|SV-241999r922948_rule, STIG-ID|WNFWA-000017, STIG-Legacy|SV-54903, STIG-Legacy|V-17435, Vuln-ID|V-241999

Plugin: Windows

Control ID: 76f5604a81f22b28dae16dab054ac8b80b4e49a317680f6a50ceca6ac2116052