**What is Port Security?

Port Security is one of the most powerful Layer 2 security features in Cisco switches. In this short video, you’ll learn what Port Security is, why it’s important, and how it protects your network from unauthorized access and MAC flooding attacks.

💡 You will learn:

What Port Security does

Trusted vs Untrusted devices

Port Security violation modes (Protect, Restrict, Shutdown)

Why every Network Engineer should use it

This topic is important for CCNA, CCNP, Network Engineers, System Admins, and anyone preparing for networking interviews.

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