What does "Scan HTTP" do?

Question

What does the checking the "Scan HTTP" checkbox do? (Located in Firewall > firewall rule > "web malware and content scanning") 
 Does it activate some policies somewhere? 
 Thanks!

David Birdsall · Accepted Answer

Hua Lin, 
 Hau Lin said: What does the checking the "Scan HTTP" checkbox do? (Located in Firewall > firewall rule > "web malware and content scanning") 
 In Scan HTTP, all HTTP web traffic is scanned by the scanning engine and settings chosen in Web > General. 
 Hau Lin said: Does it activate some policies somewhere? 
 No, you to activate polices in Web menu of the Advanced section