IPSec VPN

  • A protocol suite used to secure data sent over IP networks.

  • Encrypts and authenticates the communication between two endpoints (like AWS and on-premises).

⚙️ IPSec VPN Negotiation Phases

  • Phase 1:

    • Establishes a secure channel between the two participants.

    • Negotiates a shared secret and sets up the IKE (Internet Key Exchange) session.

  • Phase 2:

    • Negotiates the IPSec Security Association (SA).

    • Defines how actual traffic will be encrypted and authenticated through the tunnel.

🧠 Quick Summary

Phase
Purpose

Phase 1

Create a secure channel for negotiating security settings

Phase 2

Establish encryption/authentication rules for traffic

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