/etc/apache2/ports.conf: This file specifies the ports that Apache will pay attention on. By default, Apache listens on port eighty and In addition listens on port 443 any time a module offering SSL capabilities is enabled. When the UFW firewall is already configured, we must allow the Apache service over the https://apache-web-server-support23322.wikipublicity.com/5464094/the_basic_principles_of_apache_web_server_support