The host name of your FortiGate unit appears in the Host Name row, in the System Information widget. The host name also appears at the CLI prompt when you are logged in to the CLI and as the SNMP system name.

To change the host name on the FortiGate unit, in the System Information widget, select Change in the Host Name row. The only administrators that can change a FortiGate unit’s host name are administrators whose admin profiles permit system configuration write access. If the FortiGate unit is part of an HA cluster, you should use a unique host name to distinguish the FortiGate unit from others in the cluster.