SQL Server and the Windows Server 2008 Firewall

SDL alum, Shawn Hernan (now in the SQL Server team), has written an excellent post about SQL Server 2008, Windows Server 2008 and the impact of the firewall being enabled by default in Windows Server 2008, the first time we have enabled a firewall by default in our server operating system. If you're a SQL Server admin, you really should read his post.