title: Can i allow specific device to access node.js server and block all the others?
body: <p>I have built an iOS app that uses a node.js server to access a Mongo database through some endpoints. Is it possible to allow specific devices to access these endpoints and block all the other devices?</p>
  
  <p>I'm thinking something like a list of allowed MAC addresses or other unique id because server is running in a LAN.</p>