# Connection Preferences

You can configure FTP Options here. At present there is just two options:

Enable passive mode (PASV)

- Passive &FTP; is often required when you are behind a firewall. Many firewalls only permit connections that were initiated from the inside. Passive &FTP; is controlled by the client, which makes it usable through firewalls.

Mark partially uploaded files

- When a mark is placed in this box, partially uploaded files will have a `.part` extension added to the end of the file. This extension is removed once the file download is complete.