I wanted to hide the folder structure from showing up on a webpage at www.mydomain.com/wcf/ and tried searching the forum But I wasn't able to come up with anything, or maybe I was using the wrong search terms.
EDIT: See second post for a better solution
I'm on Debian linux with Apache.
sudo nano /etc/apache2.conf
ctrl+w then search for: <Directory
edit the directory for the root of your domain and add Options -Indexes to it.
then save the file and restart apache.
It may be good to make a copy of the .config file before changing in case you accidentally hit a key somewhere in the apache2.conf file while looking for the directory to edit.