Thanks for posting in Q&A platform. And thanks for LeonLaude's answer.
As LeonLaude metioned, the default path for the log file of firewall is %systemroot%\system32\LogFiles\Firewall\pfirewall.log
If the firewall log was not enabled, then this file folder will be empty, you could click Customize button and then enable the log as the following screenshot to trigger the corresponded logs.
(Please kindly note that we don’t have such 2008 server for test but the settings are also applied to server 2008)
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