@Shailendra Katiyar, Hortonworks recently refreshed the sandbox deployment in order to eliminate unnecessary open ports. Unfortunately, the only port included is SSH. To continue with the sandbox, you will need to add at least two ports to the inbound rules: 8888 and 8080. You may also eventually want additional ports open for Zeppelin, Nifi, etc, but you can get started with just those two. On the left sidebar, click "Resource groups". Here, mine is called sandbox1rg. Click on the blue Resource Group name. You will see the resources in the group. The firewall rules are in the network security group, here called 'sandbox1-nsg'. Click on the network security group name. You will see the rules, of which there is only one. This rule allows any IP address to connect to port 22 for SSH. You will add another rule by clicking on the 'Add' button above the list of rules. Click OK and add another for port 8080 in the same manner. Once the rules are fully applied, you should be able to move forward with the tutorials. Add additional rules as needed for other tutorials when you get to them.
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