What service runs on port 1433?

Question

By visiting the IANA website at www.IANA.org and looking up the Port number it was possible to determine that Microsoft Corp. has registered with the IANA that TCP Port 1433 will be used with Microsoft SQL Server. Microsoft SQL Server is Microsoft's leading Relational DataBase Management Systems (RDBMS) product.

What is 1433 port used for?

TCP 1433. TCP port 1433 is the default port for SQL Server. This SQL port is also the official Internet Assigned Number Authority (IANA) socket number for SQL Server.

What port is SQL Server running on?

By default SQL Server listens on TCP port number 1433, but for named instances the TCP port is dynamically configured.

Is SQL 1433 UDP or TCP?

By default, the typical ports used by SQL Server and associated database engine services are: TCP 1433, 4022, 135, 1434, UDP 1434.

Is port 1433 open by default?

By default, SQL will attempt to use 1433. If that port is unavailable, it will automatically choose another port. If this is the case, that port will need to be opened through the firewall instead. For steps to find the port SQL Server is using, refer to How to find the port being used by SQL Server.

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