November 28, 2021
A directory file refers to files that are displayed instead of the directory when using the HTTP protocol by means of a web browser when calling up a directory. The name index.html is usually used for these files, but they can also have any other name and file extension depending on the server configuration. Since the directory file is optional, if there is no directory file or the server is configured incorrectly, a directory is visually displayed on the client. Since this can be a security risk, most webmasters disable this feature. In this case, the HTTP status code 403 is displayed.