Transfer type auto-detection
If the current connection is encrypted (for example, FTP over TLS), this symbol will be displayed.
Click on the icon to view details about the encryption used.
FileZilla/FileZilla Pro can limit the amount of bandwidth that it uses for both uploads and downloads. This is particularly useful if you have a number of programs accessing the internet, or need to keep network traffic down.
Hover the mouse pointer above the icon to view the current speed limit, if any.
Click on the icon to configure, enable or disable speed limits.
This lists the combined size of all files queued for transfer in FileZilla/FileZilla Pro.
Download and Upload speeds
These icons will flash as data is uploaded and downloaded. You may notice that data is downloaded even when you’re only uploading files, and vice versa – this is because replies
are sent or received with every file transfer.