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Identify the missing word(s) in the following sentence within the context of Microsoft Azure. Firewalls are used to prevent unauthorized users from accessing the protected resources. Each Azure SQL Database maps to a public IP address which is hosted by Microsoft. The [A] can be configured using the Azure portal or using the sp_set_firewall_rule stored procedure from within the master database. The [B] are configured through T-SQL only using the sp_set_database_firewall_rule stored procedure from within the user database. Upon connection, Azure SQL Database will look first for a(n) [A] in the master database and then a(n) [B], if the connection string specified a database name.