Block all incoming traffic and Active FTP

Will setting the firewall to Block all incoming traffic break Active FTP Connections?
The firewall will normally dynamically create exceptions for the Connection using the Application Layer Gateway, but will the profile override these?

Hi TribleTrouble,
Do you have any issue about FTP active mode?
If the clients are part of your domain, push the FTP firewall rules via GPO to your clients allowing FTP inbound sockets
netsh advfirewall firewall add rule name="File Transfer Program" protocol=TCP profile=domain Program=C:\Windows\System32\ftp.exe dir=in action=allow
netsh advfirewall firewall add rule name="File Transfer Program" protocol=UDP profile=domain Program=C:\Windows\System32\ftp.exe dir=in action=allow
For Windows 7, the entire networking stack was rewritten and several security measures were taken to further secure Windows.
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