Can't really understand any of this SSH thing, I have a droplet (Ubuntu LAMP) I want to add a FTP access as well, per the recommendation I understand that it isn't so secure and I should go on sFTP. So I went on and did the step-by-step of setting up ProFTPd but on the last steps where it says that I need to set up SSH key I stuck up. I generated a key (id_rsa.pub) and copied it to the server authntication_keys or something like that... but than what ? How do I get that key to my FTP client (Filezilla) and how do I use that key for using Putty's access ? Thanks