On the client-side FortiGate unit this example configuration includes a WAN optimization profile that optimizes CIFS, HTTP, and FTP traffic and an active WAN optimization policy. The active policy also applies virus scanning to the WAN optimization traffic.

On the server-side FortiGate unit, the passive policy applies application control to the WAN optimization traffic.

In this example, WAN optimization transparent mode is selected in the WAN optimization profile and the passive WAN optimization policy accepts this transparent mode setting. This means that the optimized packets maintain their original source and destination addresses. As a result, routing on the client network must be configured to route packets for the server network to the client-side FortiGate unit. Also the routing configuration on the server network must be able to route packets for the client network to the server-side FortiGate unit.