Which Port Sql Server Is Using

SQL Programming

Have you ever wondered which port SQL Server is using? As a database administrator, I constantly deal with SQL Server and its various configurations. In this article, I will delve deep into the topic and provide you with the knowledge you need to understand and manage SQL Server ports.

Understanding SQL Server Ports

Before we dive into the specific port number that SQL Server uses, let’s take a moment to understand what a port is. In the context of computer networking, a port is a virtual endpoint that allows communication between two or more devices. Ports are assigned specific numbers, known as port numbers, that help applications and services identify and establish connections with each other.

In the case of SQL Server, it uses a default port number to listen for incoming connections. By default, SQL Server uses port number 1433 for its standard instance. This means that if you don’t specify a different port during installation or configuration, SQL Server will use port 1433 to communicate.

However, it’s important to note that SQL Server also supports dynamic port allocation. This means that if port 1433 is already in use by another application on the server, SQL Server will choose a different available port to listen on. In such cases, it is crucial to ensure that the dynamic port is properly configured and that firewall rules are updated accordingly to allow communication.

Checking the SQL Server Port

If you are unsure which port your SQL Server instance is currently using, there are several ways to find out. One of the easiest methods is to use the SQL Server Configuration Manager, which is a graphical tool that allows you to manage various aspects of SQL Server.

To check the SQL Server port using the SQL Server Configuration Manager:

  1. Open the SQL Server Configuration Manager.
  2. Expand the “SQL Server Network Configuration” section.
  3. Select the “Protocols for [YourInstanceName]” option.
  4. In the right-hand pane, you will see a list of protocols. Look for TCP/IP and double-click on it.
  5. Go to the “IP Addresses” tab.
  6. Scroll down to find the “IPAll” section, where you will find the value for the TCP Port.

Alternatively, you can also use the SQL Server Management Studio (SSMS) to check the SQL Server port:

  1. Open SSMS and connect to your SQL Server instance.
  2. Right-click on the server name in the Object Explorer and select “Properties”.
  3. In the “Server Properties” window, navigate to the “Connections” tab.
  4. Look for the “TCP Port” value under the “IPAll” section.

Both of these methods provide a convenient way to determine the SQL Server port, whether it is the default port 1433 or a dynamically assigned port.


Understanding the port that SQL Server is using is essential for managing and troubleshooting database connectivity. By default, SQL Server uses port 1433, but it can also dynamically assign a different port if necessary. Using tools like the SQL Server Configuration Manager or SQL Server Management Studio, you can easily check the port configuration of your SQL Server instance. This knowledge will help you ensure smooth communication and optimize your SQL Server environment.