Chapter 1 What’s New for FortiOS 5.2.1 : Top Features : SSL Inspection
  
SSL Inspection
Several changes have been made to how SSL inspection is handled by a FortiGate unit, with the addition of a new mode that allowed HTTPS traffic to be scanned without enabling deep inspection, as well as changes to the handling of certificates and configuring exemptions for SSL inspection.
For more information, see “SSL Inspection”.