Technical Tip: Build Dialup IPsec tunnel using IPSec Templates on FortiManager

Description

This article describes how to build a Dialup IPsec tunnel using IPSec Templates in FortiManager.

Scope

FortiManager.

Solution

There are 2 scenarios to configure VPN and control access to specific networks:

• Using peerid and building a separate phase1 interface for each protected subnet (phase 2 selector of dialup server).
• Managing access using Xauth and firewall policies.

Configure IPsec template for Dialup VPN:

1. Select 'Create New' under Device Manager -> Provisioning Templates -> IPSec Tunnel.
2. Set 'Name' of the template and then select 'Create New' to start configuring the IPsec tunnel.
3. Configure phase1 and phase2 using the following details in the screenshot.

Phase1:

Note: 

The address object used for the 'IPv4 client IP range' should have the 'type' set to 'IP Range'. Otherwise, the installation will fail.

Phase2:

4. Install device settings on the FortiGate, and the IPsec configuration will be done.
5. Device manager will show the IPsec tunnel and map it to a normalized interface.

6. Use the normalized interface in firewall policies to allow access.