Uploaded June 2019 | Updated September 2026, 2 weeks ago

---

This is an animated video explaining what a network firewall is. A firewall is a system that is designed to prevent unauthorized
access from entering a private network by filtering the
information that comes in from the internet. A firewall blocks
unwanted traffic and permits wanted traffic.

My monitor (Purchased this on 11-9-25) that I use and recommend: amzn.to/4oCYS4o
My keyboard amzn.to/3XJlSDb
My mouse amzn.to/4pqvQpj

Browse the internet in privacy.
►Get the VPN that I use (affiliate). nordvpn.com/powercert
Save 65% on a 2-year plan + 4 months free