cisco-ipsec-s2s

Site-to-Site IPsec VPN Configuration with Cisco Routers

Introduction

In situations where sensitive data, such as protected health information (PHI) or payment card information (PCI), needs to traverse the internet, IPsec provides a reliable solution for encrypting and securing data in transit.

This article will cover the configuration for an IPsec tunnel between two sites using Cisco routers in an emulation software solution called EVE-NG. You should have this in your lab if you're into networking and security. However, regardless of the hardware or software solution, the configuration of IPsec is essentially the same.

Context

Organizations handling sensitive data must comply with various regulatory requirements such as PCI-DSS for payment card information or HIPAA for healthcare data. These regulations mandate the use of strong encryption when transmitting sensitive information across public networks.

IPsec (Internet Protocol Security) provides a comprehensive framework for securing IP communications through authentication, integrity checking, and encryption. A site-to-site IPsec VPN creates a secure tunnel between two networks, allowing remote locations to communicate securely over the internet.

Topology

Network Details:

• Site A Network: 192.168.10.0/24

• Site A PCI-DSS Device: 192.168.10.10

• Site B Network: 192.168.20.0/24

• Site B PCI-DSS Device: 192.168.20.21

• Site A WAN Interface: 203.0.113.1/30

• Site B WAN Interface: 203.0.114.1/30

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@NAXS Labs