There is a very simple way to prevent people from seeing your directory listing via the web browser’s address bar. You can prevent it at the root level (www) or inany sub level folder. All you need is a file called .htaccess
Note: It may seem that .htaccess is a file extension and the filename to the left is missing, but this is not the case. The actual name of the file is .htaccess
Bare minimum, all you need is one line of text:
If you do not want to prevent directory listings:
Let us say you do not care if people see what is in your directory, but want to restrict certain file types. You can control what files are seen by using the IndexIgnore option.
So, let’s say you want to prevent people from seeing shock wave files *.swf and PHP files *.php
You can code it like this:
Options +Indexes IndexIgnore *.swf *.php
Note: Separate each file extension with a space.