![]() ![]() For more information, see Surface Area Configuration. To enable remote DAC, use the Surface Area Configuration facet. Check the error log for the port number.īy default, remote connections to the Dedicated Administrator Connection (DAC) are not enabled. Other ports are used for named instances. See the discussion below in the section Dynamic Ports. ![]() The port number configured by the administrator. SQL Server named instances when they are configured to use a fixed port UDP port 1434 might be required for the SQL Server Browser Service when you are using named instances. The TCP port is a dynamic port determined at the time the Database Engine starts. SQL Server named instances in the default configuration (Named instances have special considerations. It applies to routine connections to the default installation of the Database Engine, or a named instance that is the only instance running on the computer. This is the most common port allowed through the firewall. SQL Server default instance running over TCP It’s important to note that a named instance will have a dynamic port number other than 1433 used and it might be better be configured to use a static port instead. The rest port numbers are listed on the table below. The most often asked question when configuring a firewall for SQL Server access is what ports are used by SQL Server? If your SQL Server uses default port numbers, it’s important to have TCP port 1343 & UDP port 1344 at the minimum opened. ![]()
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