Step 1 » Update repositories .

~$  sudo apt-get update

Step 2 » Install VsFTPD package using the below command.

~$ sudo apt-get install vsftpd

Step 3 » After installation open /etc/vsftpd.conf file and make changes as follows.
Uncomment the below

write_enable=YES
local_umask=022

chroot_local_user=YES

and add the following line at the end.

pasv_enable=Yes
pasv_min_port=40000
pasv_max_port=40100

Step 4 » Restart vsftpd service using the below command.

~$ sudo service vsftpd restart

Step 5 » Now ftp server will listen on port 21. Create user with the below command.Use /usr/sbin/nologin shell to prevent access to the bash shell for the ftp users .

~$ sudo useradd -m john -s /usr/sbin/nologin

~$ sudo passwd john

Step 6 » Allow login access for nologin shell . Open /etc/shells and add the following line at the end.

/usr/sbin/nologin

Now try to connect this ftp server with the username on port 21 using winscp orfilezilla client and make sure that user cannot access the other folders outside the home directory.

OK Work