Question: how vsftpd run over ssl?
Answer: Prepare a place for the SSL key to live: mkdir /etc/ssl/private., For this example we'll use a self-signed SSL: ... , Next, configure vsftpd to make use of that certificate. ... , Add the below configurations at the bottom of /etc/vsftpd/vstpd. ... , To exit type “:wq” and that will save the file and quit the program.