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I want to restrict the connections to my SQL Server instance to specific IP addresses. I want to prevent any connections from any IP addresses except a specific list. Is this something that can be configured in the SQL Server instance or database?
Sounds like something you’d do using the Windows firewall (you can block the SQL Server port(s), and allow exceptions for certain IP addresses).
You could do this with something like a logon trigger that checked the IP address using sys.dm_exec_connections but I think it’s a much less desirable option than blocking the traffic outright.
Certainly much tougher to do at the database level.