Troubleshooting Tip: File Security Policy is not blocking large size files

[Ahmed_Galal]

Description	This article describes why after configuring the FortiWeb feature 'File Security Policy' to block certain file types 'for example: exe' small size exe files 'ex:1 MB' are getting blocked however large exe files 'ex: 10 MB' PDFs are getting bypassed.
Scope	FortiWeb.
Solution	FortiWeb by default parses files up to 5MB and if the file's size exceeds this value the connection will be bypassed, This issue can be fixed by adjusting the antivirus buffer size. config system antivirus     set uncomp-size-limit 10240 end   Note: This buffer is not for antivirus only, it is for both antivirus and File Security.