IPSec Simplified: AH, ESP, Tunnel Mode & IKE 🔐

In this video, we break down IPSec (Internet Protocol Security) using a clean visual approach, walking you through:
🔹 How IPSec fits into the OSI Model
🔹 The difference between Authentication Header (AH) and Encapsulating Security Payload (ESP)
🔹 The challenges of NAT with IPSec and how NAT Traversal (NAT-T) fixes it
🔹 What Security Associations (SA) are and how they manage crypto settings
🔹 The Internet Key Exchange (IKE) process using Diffie-Hellman
🔹 The two IPSec Modes: Transport Mode vs. Tunnel Mode — when and why to use them
Whether you're studying for Security+, CCNA, or just want to really understand how IPSec protects modern networks, this video delivers it all in one streamlined, beginner-friendly lesson.
🔐 Security doesn’t have to be confusing. Let’s decode IPSec together!