Chapter 7 Firewall for FortiOS 5.0 : Building firewall objects and policies : Proxy Option : Oversized Files : Option 2
  
Option 2
Option 2 can only be done in the CLI.
Enter the following CLI command:
config firewall profile-protocol-options
edit example_standard
config http
set options clientcomfort no-content-summary
set oversize-limit 2
set comfort-interval 15
next
end