Enable Firewall Logging on Windows

Are your packets being dropped by Windows Firewall?  Want an insight into what is going on?  Simply open local group policy on a workstation / server (gpedit.msc) or configure a GPO in Group Policy Management Console (GPMC).  Under Windows Firewall with Advanced Security, go to the general properties.  Select the profile --> Logging and enable Logging on the set profile.  The log file by default goes to:

%windir%\system32\logfiles\firewall\pfirewall.log


Very handy for troubleshooting.
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