https://support.untangle.com/hc/en-us/articles/360004252253-Configuring-An-IKEv2-IPsec-Connection-From-Windows-10-To-Untangle-NG-Firewall

You can connect Windows 10 devices to Untangle NG Firewall using IPsec VPN with IKEv2. This type of connection can use full tunnel so that all Internet traffic routes through the VPN tunnel.

Prerequisites

Before you can set up IPsec tunnels from Windows 10, you must properly configure NG Firewall with a fully qualified Internet hostname and matching certificates.

IMPORTANT: See **Configuring Untangle NG Firewall For IPsec Tunnels** for step by step instructions before continuing with the steps below.

Install the certificate

Note: If you use a signed SSL certificate from a trusted certificate authority, this step is not necessary.

To install the certificate on the Windows 10 device:

1. Open a browser on the Windows 10 device and navigate to https://your_firewall_host/cert
2. The browser downloads the certificate file. Locate this file in your downloads folder.
3. Then, open the downloaded certificate file.

1. Click “Install Certificate…”

   

2. Select “Local Machine” and click Next.

   

3. Select “Place all certificates in the following store” and click “Browse…”

   

4. Select “Trusted Root Certification Authorities”, click OK, then click “Next”.

   

5. Click “Finish”.

   

6. Click “OK” on both windows.

   

Set up a VPN connection: