VPN Tracker is the leading Mac VPN client and compatible with almost all IPSec VPN gateways (Try VPN Tracker for free). Please refer to the following table to find out if the VPN Tracker team has already successfully tested VPN Tracker with your Fortinet VPN gateway. If configuration guides are available for your Fortinet VPN gateway, you'll find them here.
In case your Fortinet IPSec VPN gateway is not in the list, there's a good chance that your Fortinet VPN appliance will still work with VPN Tracker. The VPN Tracker manual has general configuration instructions.
Documentation and device profiles are available for FortiGate VPN gateways running FortiOS 3 or FortiOS 4. If you do not know which FortiOS version your device is running, please choose FortiOS 3.