title: How configure Blazor Web server to listen IP addresses?
body: <p>I build a Blazor Web app server, run it on machine but it responds on localhost only, i.e.
  <a href="http://localhost:5000" rel="nofollow noreferrer">http://localhost:5000</a>
  but does not respond when I query it from an exrternal host
  <a href="http://myhostIP:5000" rel="nofollow noreferrer">http://myhostIP:5000</a>
  This myhostIP pinged ok. FW is off.
  In VS2019 in the project settings:
  App URL: <a href="https://localhost:5001;http://localhost:5000" rel="nofollow noreferrer">https://localhost:5001;http://localhost:5000</a></p>
  
  <p>How to configure Blazor Web server to listen (all) hosts IP addresses using appsetings.json without hardcoding?</p>