title: Nodejs isn't accessible outside of raspberry pi with pihole running
body: <h2>Context</h2>
  <p>I have a Raspberry Pi 4 with pihole running on it. Pihole is working great.</p>
  <h2>Issue</h2>
  <p>I'm trying to run a nodejs app on the R-PI and it shows I can access it at localhost:3000. When I load it on the Pi, it shows the information correctly. If I try and load it from my laptop, which is on the same network as the Pi, it won't respond.</p>
  <h2>Additional Diagnostics</h2>
  <p><code>sudo netstat -lptu </code> confirms the following:</p>
  <p><code>tcp        0      0 localhost:3000          0.0.0.0:*               LISTEN      15369/node    </code></p>
  <p>I'm able to access the Pihole admin interface from my laptop.</p>