SetEnvIfNoCase Referer "^(http|https)://(your_ip_or_hostservername):(8000|4430)/" local_ref=1
 
<FilesMatch "\.(js|css|ico|gif|jpg|jpeg|png|bmp|tiff|swf|mov|avi|mpg|mpeg|mp3|mp2|ogg|wav|wma|wmv|ram)$">
  Order Allow,Deny
  Allow from env=local_ref
</FilesMatch>