Think of a firewall as your computer’s bouncer at a club. It decides who gets in and who gets kicked out. On Ubuntu, that bouncer is usually called UFW (Uncomplicated Firewall). It’s a pretty chill name, right?
But here’s the thing: most of the time, your firewall is already off by default on a fresh Ubuntu install. Yeah, wild. The club is just wide open until you flip the switch. So disabling it isn’t some rebel act—it’s often just going back to square one.
