title: curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
body: <p>I am a newbie to Hyperledger Fabric and I am trying to <a href="https://hyperledger-fabric.readthedocs.io/en/latest/install.html" rel="nofollow noreferrer">install Samples, Binaries and Docker Images.</a> I used this command line: </p>
  
  <p><code>curl -sSL https://raw.githubusercontent.com/hyperledger/fabric/master/scripts/bootstrap.sh | bash -s</code></p>
  
  <p>But I got this error:</p>
  
  <blockquote>
    <p>curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused</p>
  </blockquote>
  
  <p>My machine is Ubuntu 18.04 and I've already made sure the version of curl in my machine is the newest. I've already googled this error and tried what I can, but it still don't work well. Hope you guys can give me some suggestions. Thanks a lot! </p>