title: Vagrant's port forwarding not working
body: <p>I'm running into a small problem at the end of the <a href="http://vagrantup.com/docs/getting-started/ports.html" rel="noreferrer">Getting Started guide for <code>vagrant</code></a>. I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in <code>Vagrantfile</code>:</p>
  
  <pre><code> config.vm.forward_port "web", 80, 4567
  </code></pre>
  
  <p>But when I make requests to that port, they fail. The error reported by Safari is 'Safari can’t open the page “<a href="http://localhost:4567/" rel="noreferrer">http://localhost:4567/</a>” because the server unexpectedly dropped the connection.'</p>
  
  <p>I did a <code>vagrant reload</code> and saw "[default] -- web: 80 => 4567 (adapter 1)" in the scroll, so where should I begin to troubleshoot this? Thanks.</p>