After FTP over TLS 0.9.51 upgrade, enter the admin panel, will appear the following warning:
Warning: FTP over TLS is not enabled, users can not securely log in.
It represents not enabled tls mode, especially in the field today for this operation again.
Go to Settings -> ssl / tls settings.
Generate a new certificate to the server machine's ip address with.
Click to generate a certificate, while on the prompt success.
Free to enter a password key. Note the following one port. This is ssl, tls connection port.
Finally, click on the lower left to confirm.
When you use sll or tls connection, it will prompt you certificate information, and you choose to save it ..
FTP logs show, tls encrypted connection success ..
The default mode ftp, port 21 can not be connected.
You will receive its exception.
Implicit SSL port 990, you can connect this port number is just the setting.
explicit SSL port is 21, can be connected.
explicit TLS port 21 can be connected.
Individual recommended: Implicit SSL