One of the recommended to use FTP clients-FileZilla client is a free multilanguage FTP client, you can download it from the official page http://filezilla-project.org/
After installing and running in the main program window, you must configure a new connection, for this need to click on "Site Manager", or select "File menu-site manager".
In accordance with the instruction "FTP — file hosting, file uploads" get and set options for the connection:
Go to the tab "settings", select passive mode transfer, tick the "limitation of simultaneous connections" and set the "maximum number of connections to 2-m click" connect ".
Connection to the server will occur, then you can work in the usual mode for a two-Panel file manager.