Hello. I followed this tutorial for ubuntu 16.04. https://www.howtoforge.com/virtual-...-and-bandwidth-management-on-ubuntu-14.04-lts. And when I put all the data to connect with filezilla I get this error. Connection attempt failed with "ECONNREFUSED - Connection refused by server".Also tested from the ubuntu terminal and I get connection refused. anyone know how I can solve it? I am using a vps server. checked port 21 and it is open. Thank you very much.