[ Thanks to Falko
Timme for this link. ]
“FTP is a very insecure protocol because all passwords and all
data are transferred in clear text. By using TLS, the whole
communication can be encrypted, thus making FTP much more secure.
This article explains how to set up ProFTPd with TLS on an Ubuntu
11.10 server.“1 Preliminary Note: In this tutorial I use the hostname
server1.example.com with the IP address 192.168.0.23. These
settings might differ for you, so you have to replace them where
appropriate.“Because we must run all the steps from this tutorial with root
privileges, we can either prepend all commands in this tutorial
with the string sudo, or we become root right now by typing sudo
su”