Firewall

The firewall is already configured by DigitalOcean in my choice of droplet (Ubuntu 20.04 with WordPress). However if other services are to be added (in my case yes) the Ubuntu firewall needs to be configured. See below for some extra documentation links I referred to:

• HowTo Geek: How to Configure Ubuntu’s Built-In Firewall
• Ubuntu Documentation: Ubuntu firewall

View current configuration:

ufw status