Importing your SSL Certificate:
- Log into your FortiGate System.
- Browse to System > Certificates.
- Select Import > Local Certificate.
- Browse to the location and path of your SSL certificate.
- Click OK.
Configuring your FortiGate VPN to use Signed certificate:
Browse to VPN > SSL > Settings.
In the Connection Settings section under the Server Certificate drop down select your new SSL certificate.
You have configured the Foritgate VPN to use the new SSL certificate.