Acme Web Hosting is replacing one of their firewalls with a FortiGate. It must be able to apply port forwarding to their back-end web servers while blocking virus
uploads and TCP SYN floods from attackers. Which operation mode is the best choice for these requirements?

A.
NAT/route

B.
NAT mode with an interface in one-arm sniffer mode

C.
Transparent mode

D.
No appropriate operation mode exists