First things first, check to see what available ftp server are there for Debian

atp-cache search ftp-server

This will suppose to to list all available ftp server . As you can see there are a few available server you can choose. Popular one is proftp.

To install the service do:

apt-get install proftp

This will start installing .. you know, displaying all those letters and words and stuff..

webserver:~# apt-get install proftpd
Reading package lists… Done
Building dependency tree… Done
The following extra packages will be installed:
libmysqlclient15off libpq4 mysql-common perl perl-modules ucf
Suggested packages:
libterm-readline-gnu-perl libterm-readline-perl-perl proftpd-doc
Recommended packages:
perl-doc debconf-utils
The following NEW packages will be installed:
libmysqlclient15off libpq4 mysql-common perl perl-modules proftpd ucf
0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Need to get 9623kB of archives.
After unpacking 39.1MB of additional disk space will be used.
Do you want to continue [Y/n]? Y

Run proftpd from inetd or standalone?

inetd
standalone

Initially selected standalone here.

And you’re done!

To start up the FTP service:

/etc/init.d/proftpd start