title: proxy nodejs express at package.json raised an error on campus network
body: <p>I work on a project as a fullstack developer on using reactjs &amp; express.</p>
  
  <p>My express server is on server folder, and reactjs client is on server/client.</p>
  
  <p>I set the following proxy at my package.json at my server/client folder which includes ReactJS (create-react-app based). :</p>
  
  <pre><code> "private": true,
    "proxy": {
      "auth/google": {
        "target": "http://localhost:5000"
      },
      "/api/*": {
        "target": "http://localhost:5000"
      },
      "/apis/*": {
        "target": "http://localhost:5000"
      }
    },
    "dependencies": {
  </code></pre>
  
  <p>When I connect to interent at the university campus I get the following error 
  <a href="https://i.stack.imgur.com/j5GUp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/j5GUp.png" alt="enter image description here"></a>
  but when I connect to internet outside campus no error happens. How can I avoid that from happening? </p>