L2TP over IPsec
From Teltonika Networks Wiki
Introduction
Layer 2 Tunneling Protocol (L2TP) is a VPN tunneling protocol that allows remote clients to use the public IP network to securely communicate with private corporate network servers. L2TP uses PPP over UDP (port 1701) to tunnel the data.
Configuration overview and prerequisites
Before we begin, let's overview the configuration that we are attempting to achieve and the prerequisites that make it possible.
Prerequisites:
- Two RUTxxx routers of any type (excluding RUT850)
- At least one router with a Public Static or Public Dynamic IP addresses
- At least one end device (PC, Laptop, Tablet, Smartphone) to configure the routers
Configuration scheme:
The figure above above depicts two RUTxxx routers (RUT1 and RUT2) connected by an IPsec tunnel via the Internet.
