title: Access between layered network routers
body: <p>I have 2 standard network routers (both DHCP-enabled), one behind the other as below:</p>
  
  <pre><code> WAN --&gt;  Router A (192.168.1.1) --&gt; Router B (192.168.100.1)
  </code></pre>
  
  <p>Router B's WAN is connected to one of Router A's LAN ports.  I can access the internet on all devices without problems.</p>
  
  <p>If I have a computer connected to Router B (let's 192.168.100.7), how can I have it access Router A's admin webpage, or any computer on the Router A LAN network?</p>