Final answer:
Azure SQL Server level firewall rules can only be created in the Azure portal.
Step-by-step explanation:
Azure SQL Server level firewall rules can only be created in the Azure portal. The Azure portal provides a user interface for managing and configuring various resources, including SQL Server instances.
To create a firewall rule, you need to navigate to the specific SQL Server instance in the Azure portal and go to the 'Firewall and virtual network' settings. From there, you can add firewall rules based on IP addresses or ranges to control access to your SQL Server.
For example, you can create a rule to allow connections from your organization's IP address range and block all other IP addresses, thereby adding an extra layer of security to your SQL Server.