User Guide

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179
12.15.3 Example of configuring a L2TP over IPSec VPN
Networking requirement
An enterprise has used the router to set up a LAN and access the internet. Employees of its branch
must be allowed to access, through the internet, the HQ’s resources over the HQ LAN in a secure
manner, including internal resources as well as the OA, ERP, CRM, and project management
systems.
Solutions
You can set up an L2TP over IPSec VPN using the router to meet this requirement.
Network topology
Configuration description
Step
Task
Description
1
Configure IPSec
connection.
Configure basic IPSec parameters.
2
Configure L2TP server.
Set the router as a L2TP VPN server.
3
Add L2TP users
Create an account for connecting.
Configuration procedure
Assume that the two routers share the following basic IPSec information:
Encapsulation Mode: Transport
Key negotiation Method: Auto Negotiation
Staff on travel
IP: 202.105.88.77
Router
Enterprise internal server
Switch