FTP is an indispensable feature of servers that host and serve websites as it enables us to easily upload stuff to the remote server. On a Ubuntu server, with a little help of aptitude command (the package management program descended from Debian), you can install the most simple yet most common FTP daemon program for your server: vsFTPd.

apt-get install vsftpd

It is started automatically after successful installation. Stop it:

/etc/init.d/vsftpd stop

So that you can customize the configuration file:

vi /etc/vsftpd.conf

And make it look like:

pasv_enable=YES
pasv_max_port=8010
pasv_min_port=8001

anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022

idle_session_timeout=3600

chroot_local_user=YES

pam_service_name=ftp

Restart the FTP service:

/etc/init.d/vsftpd start

Now you can try connecting to the FTP and transferring some stuff.