title: Apache forward proxy that handles https
body: <p>I followed the example in the following SO question to successfully set up an Apache forwarding proxy: <a href="https://stackoverflow.com/questions/724599/setting-up-an-apache-proxy-with-authentication">Setting up an Apache Proxy with Authentication</a></p>
  
  <p>It works well, except that when accessing sites via https, it says it cannot find the site. For example, Chrome gives</p>
  
  <pre><code>Error 111 (net::ERR_TUNNEL_CONNECTION_FAILED): Unknown error.
  </code></pre>
  
  <p>And on the server, I do not even see something in the access logs. For my proxy settings, I have configured the same for <code>http</code> and <code>https</code> (i.e. port 80 on my proxy server).</p>
  
  <p>Do you perhaps have an example of how to set up a forward proxy with Apache for https?</p>