Upload images to /resources folder instead of /public folder

[BinWang01]

Hi,
For better security, I want to upload images to /resources folder instead of /public folder. I changed the configuration and the images were uploaded successfully. However, the images cannot be displayed in the file manager window and I cannot insert them into ckeditor. I understand it's because they are not in web root folder and we need other functions to serve them. Is there any way to add that functionality? Without that the configuration doesn't really work. Correct me if I'm wrong. Appreciate your help! Thanks.