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Wondering what a firewall actually does in a network?
This video explains the basic concept of a firewall, how it filters traffic, and why it’s the first line of defense in cybersecurity — with examples suitable for students, job seekers, and IT professionals.

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📚 What You’ll Learn:
✅ What is a firewall in networking?
✅ Why firewalls are used in every organization
✅ How firewalls filter traffic (IP, Port, Protocol)
✅ Real-life analogy of firewalls (guards at the gate)
✅ Types of firewalls:
• Packet-filtering firewall
• Stateful inspection firewall
• Proxy firewall
• Next-generation firewall (NGFW)

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