title: Relation between webserver port and http port
body: <p>I need help understanding relation between port used by webserver and port used by http.</p>
  
  <p>When we run a web server on port <code>XYZ</code>,then it means that there is a webserver running at <code>http://&lt;IP&gt;:XYZ</code> ,but we also say that <code>http</code> uses port <code>80</code> .</p>
  
  <p>How are these two ports <code>XYZ</code> and <code>80</code> related ?</p>