What is Firewall?

Introduction to Firewalls | Firewall Types | Packet Filtering | TCP State Table | Firewall Behavior

Firewall: In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet. https://en.wikipedia.org/wiki/Firewall_(computing)

If you know the basics of networking but have been mystified by firewalls, this course is for you. This course will give you the detailed fundamentals of how a stateful firewall operates and how it functions in a network.

Below topics are covered in this video 1.What is Firewall? 2.The Need For Firewalls? 3. Firewall Types 4. Common Firewall Capabilities 5. Packet Filtering Firewalls 6. What is the Firewall Doing? 7. Zones and Policies 8. Expected Firewall Behavior 9. The TCP State Table ... https://www.youtube.com/watch?v=7dR_oX3JJOU