Pure-ftpd + pureadmin (Ftp server with gui)

These are all steps to follow in order to have a nice ftp server with an easy gui.

Install Pure-FTP if you don't already have it. Grab it with Synaptic.
install attached pureadmin deb file
run 'sudo gedit /etc/inetd.conf' and comment (add a # at the start of) the line containing 'ftp'
run 'sudo gedit /etc/default/pure-ftpd-common' and change STANDALONE_OR_INETD=inetd to STANDALONE_OR_INETD=standalone
run 'sudo groupadd ftpgroup' and 'sudo useradd -g ftpgroup -d /dev/null -s /etc ftpuser'
create ftpuser directory 'sudo mkdir /home/ftpusers'
create joe user directory 'sudo mkdir /home/ftpusers/joe' (you can create a directory for each ftp user)
run 'sudo pure-pw useradd joe -u ftpuser -d /home/ftpusers/joe' (a)
run 'sudo pure-pw mkdb'
run 'sudo ln -s /etc/pure-ftpd/pureftpd.passwd /etc/pureftpd.passwd'
run 'sudo ln -s /etc/pure-ftpd/pureftpd.pdb /etc/pureftpd.pdb'
run 'sudo ln -s /etc/pure-ftpd/conf/PureDB /etc/pure-ftpd/auth/PureDB'
Create file /etc/pure-ftpd/conf/UnixAuthentication containing only the string 'no' without quotes.
Modify permissions of /home/ftpusers directory (b) and of any subdirectories. Owner must be ftpuser while Group must be ftpgroup
run 'sudo pureadmin'
stop firestarter if installed
through "menu editor" modify pureadmin entry command (under 'system tools') from 'pureadmin' to 'gksudo pureadmin'

joe will be your test user. You can change user joe and/or add other users through pureadmin b. Easy way to change permissions: run 'sudo nautilus', go to /home, change owner with ftpuser and group with ftpgroup. Tick special flags 'set user ID' and 'set group ID'. [not sure if these ticks are necessary]

Be aware that pureadmin must be run as root.

Ubuntu Documentation