PowerCert Animated Videos

What is a Firewall? (2019x10)

: 17, 2019

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. Join this channel to get access to perks: https://www.youtube.com/channel/UCJQJ4GjTiq5lmn8czf8oo0Q/join Browse the internet in privacy. Get the VPN that I use (affiliate). https://nordvpn.com/powercert Use coupon code 'powercert' and get 68% off a 2-year plan + 1 month free.