title: How can I prevent hot-linking to my files in public storage?
body: <p>I have an NGINX server(with a wordpress site) and use Google Cloud Storage to feed my content. I have noticed sites hot-linking to my files without any attribution.</p>
  
  <p>I suppose I need:</p>
  
  <ol>
  <li>to make my links expire after a while so that the are no good after a while</li>
  <li>for my wordpress site to pass an AUTH TOKEN to permit access to my files</li>
  <li>for my google cloud storage not to feed a file unless its coming from the correct REFERRER?</li>
  </ol>
  
  <p>How would someone accomplish this?</p>