80, 443, 8080, 8443 HTTP(S)

⇒ Install Apache2 $ sudo apt install apache2

⇒ Service $sudosystemctlstatusapache2$ sudo systemctl enable apache2 $ sudo systemctl start apache2

⇒ References $ https://www.digitalocean.com/community/tutorials/how-to-install-the-apache-web-server-on-ubuntu-20-04