Run IIS Application inside Website without web.con

Question

I have an ASP.NET Website hosted in IIS. I created an application namely "Images" under the website which points to a shared network folder which every domain has access to it.

My aim is to access the images from SSRS ReportServer via URL i.e., http://URL/Images/Filename.jpg

Since it's a public folder I don't want to create web.config file inside it. Can I set Windows Authentication/Authorization via IIS Settings ?

Currently It is inheriting the web.config settings from its parent Website. I want to override it using IIS Settings for the Application.