You can specify files and folders that you want to excempt from DDoS protection
To access this function you can goto CDN > Domains> yourdomain > Security > Layer 7 DDoS > Excemptions
Step 1: Click on the Add button to add the excemption
Step 2: Select the locations of the files/folders that you would like to excempt from protection
Step 3: Specify extension e.g. png, mp4, css, html
Step 4: Click Add buttom to complete the process