What is a Firewall? Easy Understand it! 2021
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What is a Firewall?
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.
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https://www.cisco.com/c/en/us/products/security/firewalls/what-is-a-firewall.html
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