Fortinet Security Fabric over IPsec VPN
In this recipe, you add FortiTelemetry traffic to an existing IPsec VPN site-to-site tunnel between two FortiGate devices, in order to add a remote FortiGate to the Security Fabric. You also allow the remote FortiGate to access the FortiAnalyzer for logging.
If you do not already have a site-to-site VPN created, see Site-to-site IPsec VPN with two FortiGate devices
In this example, an HA cluster called Edge is the root FortiGate in the Security Fabric and a FortiGate called Branch is the remote FortiGate.