title: Connection between Fabric network and Node.js client app
body: <p>I have currently running a Hyperledger Fabric network version 1.4.3 whose certificates were generated by Fabric CA and I would like to attach a node.js client app. For this I have 2 questions:</p>
  
  <p>1- Is there any peculiarities to this type of certificate or a simple client type certificate should do the trick and</p>
  
  <p>2- As my network is already up and running must I perform a channel update to include this newly generated certificate to the desired MSP?</p>
  
  <p>Thanks in advance!</p>