/etcetera/apache2/ports.conf: This file specifies the ports that Apache will listen on. By default, Apache listens on port 80 and additionally listens on port 443 every time a module offering SSL capabilities is enabled. All through installation, Apache registers alone with UFW to provide several application profiles that could be used https://finnrdseq.blogdanica.com/28117410/a-review-of-apache-support