Setup a basic UFW firewall on Ubuntu 20.04

setup-basic-ufw-firewall-ubuntu-20-04.sh

#!/usr/bin/env bash

echo "
-------------------------------------------------
  Setting Up a Basic UFW Firewall on Ubuntu 20.04
-------------------------------------------------
"

# To run:
# curl <raw URL>/setup-basic-ufw-firewall-ubuntu-20-04.sh | sudo bash

# From:
# https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu-20-04
# and
# https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-20-04

# Have firewall allow SSH connections so that we can log back in next time
sudo ufw allow OpenSSH

# This profile opens both port 80 (normal, unencrypted web traffic) and port 443 
sudo ufw allow 'Nginx Full'

# enable the firewall
sudo ufw --force enable

# Verify with: sudo ufw status