I am trying to use nodejs and socket.io to deliver a webapp, which use websocket on port 3000.
I have opened port 3000 on my EC2 instance in my management console by adding the inbound TCP rule to the relevant security group, however I still can't access it via public dns on my browser.
sudo netstat -tulpn doesn't show it as an open port.
What am I missing? Is there some service I need to restart or a command line I need to push to get it running?