Lee Markum takes a look at logins:
You know you need to be thinking about SQL Server security, but maybe you’re not sure where to start. Topics like firewalls and ports and port scanners and such may be dancing your mind. Those are good things to think about, but they are not under your sphere of influence as a data professional in charge of SQL Server. So, what can you do?
Your first place to start is by looking at the Logins, which as I’ve explained in a previous post, are at the level of the SQL Server instance level.
Read on for two approaches.