What is TLS session resumption?
Generally, the TLS session resumption functionality speeds up client reconnections, as no full TLS handshake needs to occur. Instead, a value known from a previous session is used to verify the authenticity of the connection.
How to use Pure-FTPd in linux?
(1) Fetch pure-ftpd from aptitude. (2) Create a group for Pure-FTPD. (3) Add a user to the group (revoke the home directory and deny acces to shell login). (4) Create a directory for your ftp-files (you can also specify a specific user e.g.: /root/ftphome/bob).