Alias /auf-refer/ /var/lib/auf-refer/
<Location /auf-refer>
  Order deny,allow
  Deny from All
  Allow from 127.0.0.0/255.0.0.0
  #Allow from 10.0.0.0/255.0.0.0
  Options Indexes
  # required module, to enable with "sudo a2enmod mime"
  <IfModule mod_mime.c>
    AddType application/json .json
    AddCharset UTF-8 .json
    # recommended module, to enable with "sudo a2enmod deflate"
    <IfModule mod_deflate.c>
      SetOutputFilter DEFLATE
    </IfModule>
  </IfModule>
</Location>