title: SOCKS proxy forwarding
body: <p>Here is the configuration I have:
  3 PCs : PC-1, PC-2, PC-3</p>
  
  <p>Here is what I did initially:
  Set up a SOCKS proxy on PC-1 forwarded to PC-2 using ssh:</p>
  
  <pre><code>PC-1$ ssh -ND 1080 PC-2
  </code></pre>
  
  <p>I configured the browser to use 127.0.0.1:1080 and everything works. Now I want to forward all the connections to PC-3 via PC-2. So, something like:</p>
  
  <pre><code>PC-1$ ssh -ND 1080 PC-2
  PC-2$ ssh -ND 1080 PC-3
  </code></pre>
  
  <p>How can I do this?</p>