Note: The proposal used at phase1 (and phase 2) by FortiGate wizard, should be supported by Windows. Review your newly created VPN and once okay, click “Create”. Note: Don’t change the “Subnet Mask” leave it as default.

> On “ Policy & Routing” tab > Local Interface (LAN) > Local Address (choose FW address) > Client Add range (Fill in your desired IP range) > Leave 'subnet Mask' as default, and click 'Next' > On Authentication tab > select “ Pre-shared Key” (provide key) > select ' User Group' (earlier created) and click ' Next' > Go to CUI Interface, VPN > IPsec Wizard > VPN Setup > Remote Access > Native > Windows Native (fill in required information) and click ' Next' Go to, User & Device > User Groups > Create New (then create new user group and add user acct. you just created).Go to GUI Interface, User & Device > User Definition > Create New (then create a new user account – fill in required info).

L2TP over IPSec can be deployed on FortiGate through CLI or GUI, it is advisable to follow the GUI configuration template on FortiGate (Under VPN > IPSec Wizard > VPN Setup), it makes life simple.Ī “user account” is required on FortiGate for “L2TP over IPSec” deployment. When deploying L2TP/IPSec VPN between Windows 10 PC and FortiGate, it’s possible to run into issues (where the tunnel failed to come up), if not using “VPN Proposals” supported by Windows 10.

This article describes how to configure FortiGate so Microsoft’s L2TP/IPSec VPN client configured on Windows 10 PC will have access to the network(s) behind FortiGate in a secure manner.

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