How to set up the UFW firewall on Ubuntu in 5 steps

Tue, 06 Oct 2026 09:00:00 -0300

Ubuntu ships with UFW installed, but turned off. People who spin up a VPS, install nginx, Postgres and Redis and walk away often end up with half a dozen ports open to the internet without realizing it. UFW (Uncomplicated Firewall) is a simple layer on top of iptables/nftables that fixes this with a handful of commands. This tutorial walks through it step by step, including the classic mistake that locks you out of your own server.

Ufw on Locodigital

How to set up the UFW firewall on Ubuntu in 5 steps