Open web site properties page, “Home Folder” tab:
Tick “Enable Write Permissions” option to allow web site users uploading files and their associated properties to the enabled directory on your server or to change content in a Write-enabled file. Write access is allowed only when web browser supports the PUT feature of the HTTP 1.1 protocol standard.
Tick “Enable Directory Browsing” to allow web site visitors seeing a hypertext listing of the files and subdirectories in this site.
Tick “Enable Parent Paths” to allow web pages to use relative paths to the parent directory of the current directory (paths using the “..” syntax). This option might be required for legacy ASP applications.