Pure-FTPd is a free open-source FTP server designed with security in mind. In this tutorial, we are going to learn how to set up an FTP server on Debian 10 with Pure-FTPd and how to enforce TLS encryption. Pure-FTPd Features: It supports SSL/TLS encryption and thus passwords and commands can be protected. It can run on most Unix-like systems: Linux, BSDs, Solaris, Darwin, HPUX, AIX, and even iPhone.