====== Ubuntu - FTP - VSFTP - Deny just some users to login into VsFtpd ======

To deny some users to login, add the following options in the end of the VsFtpd configuration file: 

<code bash>
vi /etc/vsftpd.conf
</code>

and modify as:

<code bash>
userlist_deny=YES
userlist_file=/etc/vsftpd.denied_users
</code>

In the file **/etc/vsftpd.denied_users** add the username of the users that can't login.  One username per line.