title: Phusion Passenger opens random ports
body: <p>I'm experiencing same problem as described here <a href="https://stackoverflow.com/questions/58518609/strange-public-listening-ports-in-passenger">Strange public listening ports in Passenger</a>.</p>
  <p>Phusion Passenger is randomly opening ports and I have no idea how to further investigate it.</p>
  <ul>
  <li>Passenger Version : 6.0.14</li>
  <li>ruby-2.4.1</li>
  <li>nginx version: nginx/1.20.2</li>
  <li>Ubuntu 18.04.6 LTS</li>
  <li>Linux 4.15.0-192-generic</li>
  </ul>
  <pre><code>netstat -lp
  tcp        0      0 localhost:45363         0.0.0.0:*               LISTEN      13226/Passenger Rub
  tcp        0      0 localhost:34515         0.0.0.0:*               LISTEN      7653/Passenger Ruby
  </code></pre>
  <pre><code>ps -p 7653 -o pid,vsz=MEMORY -o user,group=GROUP -o comm,args=ARGS
  7653 427776 user1    user1    ruby            Passenger RubyApp: /home/user1/apps/application1/current (production)
  
  </code></pre>
  <p>Thank you in advance for any tips how to solve this problem.</p>