Tuesday, February 15, 2011

SQL Server & Windows Firewall

If you’re installing SQL Server on a machine that has Windows Firewall enabled, you’ll have to configure the firewall to open the correct ports.  For a default instance, that’s TCP 1433 for the database engine and UDP 1434 for the SQL Browser (used by client applications to retrieve the dynamic port of a non-default instance of SQL).  The following MSDN article details what needs to be configured:

Configuring the Windows Firewall to Allow SQL Server Access


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