If you are having problems with setting up FileZilla Server to run behind Windows Firewall (specifically, it fails on "List" and the client receives a "Failed to receive directory listing" error), you must add the FileZilla Server application to Windows Firewall's Exceptions list. To do this, follow these steps:

1. Open Windows Firewall under Control Panel.
2. If using Vista, click "Change Settings"
3. Select the "Exceptions" tab.
4. Click "Add program..."
5. Do NOT select "FileZilla Server Interface" from the list, instead click on "Browse..."
6. Locate the directory you installed FileZilla Server to (normally "C:\Program Files\FileZilla Server\")
7. Double click or select "FileZilla server.exe" and press open (Once again, NOT "FileZilla Server Interface.exe")
8. Select "FileZilla server.exe" from the list and click "Ok"
9. Verify that "FileZilla server.exe" is added to the exceptions list and that it has a check mark in the box next to it
10. Press "Ok" to close the window
11. Open a command prompt with administrative rights and execute the following command: netsh advfirewall set global StatefulFTP disable

Passive mode should now work. If you are still having problems connecting (from another computer or outside the network), check your router settings or try to add the port number in the Windows Firewall settings located in the Exceptions tab.

See the Microsoft kb article 931130 about running FileZilla with the "Routing and Remote Access" or the "Application Layer Gateway" service enabled. http://support.microsoft.com/kb/931130

Source: https://wiki.filezilla-project.org/Network_Configuration