Ensure web port (TCP:3000) is not exposed to public for Azure Network Security Rule

Web port (TCP:3000) is exposed to public for Azure Network Security Rule.

Configure Network Security Rule for port 3000 to ensure it is not exposed to public. In console -

1. In settings of NSG select Inbound security rules.
2. Use Add button here to add security rules.
3. Create security rules for any application, port range, ip range.
   In terraform -
   Set the value of 'access' to [allow | deny]. Set the value of 'direction' to 'inbound'. Set the value of 'source_address_prefix' to an IP address or a range of IP addresses. These network security rules in controlling inbound connections to your resources in Azure.