Connect to Hadoop from a different machine
For security reasons, ports used by Hadoop cannot be accessed over a public IP address. To connect to Hadoop from a different machine, you must the open port of the service you want to access remotely. Refer to the FAQ for more information on this.
Check the Hadoop ports page to see the complete list of the most relevant ports in Hadoop.
IMPORTANT: Making this application’s network ports public is a significant security risk. You are strongly advised to only allow access to those ports from trusted networks. If, for development purposes, you need to access from outside of a trusted network, please do not allow access to those ports via a public IP address. Instead, use a secure channel such as a VPN or an SSH tunnel. Follow these instructions to remotely connect safely and reliably.