Windows Defender Firewall + Windows FTP Server

B

BANDWICHES

Why is windows defender firewall disobeying my firewall rules?

  • Enabled Windows FTP Servers via Windows 10 Features.
  • Rules are in the firewall allowing FTP access for both passive & control (rules were injected through enabling the service).
  • FTP packets are dropped by the firewall still (confirmed in the logs) but no rule is given, just "DROP".
  • This is over a VPN that is being detected as "Unidentified Network" thus putting the interfaces in the "Public" zone.
  • FTP rules apply to all three zones (Public, Private, and Domain).
  • Turning off Windows Defender Firewall for the specific zone allows the FTP transaction.
  • There are no rules denying this traffic in the list.

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