The Gatekeeper — How a Firewall Protects Your Network

Your network has an inside and an outside, and the firewall is the gate between them. Keep it closed by default, open only the few things you genuinely need, and it blocks the uninvited from the internet while still letting your own devices reach out. Not a mystery box — a gatekeeper on your boundary.

What you'll learn

• See your network as an inside, an outside, and a boundary between — with the firewall as the gate on that line.
• Block the uninvited by default and open only what you genuinely need, kept narrow and reviewed.
• Understand that blocking incoming still lets your own devices reach out to the internet normally.
• Know a firewall is one layer, not all of security — and see through 'we've got a firewall' and 'just open it up'.

Sign in to enrol — you can pay by bKash or Nagad, or apply a promo code.