Internet Direct (Indy) Version 9.0.2 Beta
TIdFTPServerThread.Authenticated
Indicates if the FTP client has successfully authenticated the user account for the connection.

property Authenticated: Boolean;
Description
Authenticated is a Boolean property that the client has successfully used the FTP USER and PASS commands to authenticate the user account for the connection. Authenticated is updated in the command reply handler for the FTP PASS command. Authenticated is read prior to executing other FTP command reply handlers, and prevents the handle form executing if the value is False.