Set of protocols for security on Networking layer from the OSI layer
Secures the data between two points using encryption and authentication
Protocol Commonly used by companies to create VPN
How it works
- Tunnels: Using IKE
- Phase 1: Two points identify each other and negociate parameters for auth and encryption methods
- Phase 2: Creation of the tunnel where the encryption happens, done using AH header or ESP
- Both Sender and Recevier must share a public and private key, for locking and unlocking the message