SetEnvIf Referer ^https?://[a-zA-Z0-9.-]*customer\.hagenhosting\.com/ Access=1
SetEnvIf Referer ^http://site[0-9]+.customer.hagenhosting.com/ Access=1
SetEnvIf --------------- ^------------$ Access=1
SetEnvIf Cookie ^lastvisited= Access=1
SetEnvIf Referer ^$ Access=1

<Files *>
  Order Deny,Allow
  Deny from all
  Allow from env=Access
</Files>