Site-to-Site VPN with NAT

Introduction

In this lesson, we will configure a Site-to-Site IPsec VPN while handling Network Address Translation (NAT). This is crucial for real-world networks where NAT is commonly used, allowing private IP addresses to communicate securely over the internet.

Quick Recap

In the previous lesson, we established a basic network topology. Here’s a quick overview of the relevant devices and IP addresses for this lesson:

R1 (1.1.1.1/32) ---- R2 (10.1.12.2/24) ---- R4 (4.4.4.4/32)