Hello,
I've read your project brief and understand the requirement. I will setup an FTP server on your Ubuntu server instance using VSFTPD (Very Secure FTP). To get started I need the following:
1. SSH root access to the server.
2. The directory you want to access by FTP.
At the end of this project, you'll be able to connect to FTP on your server using any client.
Best Regards,
Ralph