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README.md

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 # 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
+
+```
+Site A Network: 192.168.10.0/24
+Router A (R1) ---- Internet ---- Router B (R2)
+                                  Site B Network: 192.168.20.0/24
+
+R1 WAN Interface: 203.0.113.1/30
+R2 WAN Interface: 203.0.113.2/30
+```
+
+**Network Details:**
+- Site A LAN: 192.168.10.0/24
+- Site B LAN: 192.168.20.0/24
+- WAN Link: 203.0.113.0/30
+
+---
+
+![Network Topology](https://git.naxslabs.com/darnellkeith/cisco-ipsec-s2s/raw/branch/main/topology.png)
+
+
+## Configs
+Running configurations will be posted here.
+See [NAXS Labs](https://naxslabs.com/protecting-sensitive-data-with-ipsec/) for full explanation.