Port 1433

Steps to open port 1433: 1. Confirm whether the SQL Server service has been installed; 2. Start the SQL Server service; 3. Configure the firewall; 4. Check the SQL Server configuration; 5. Restart the SQL Server service.

1433 port is the default database listening port of Microsoft SQL Server and is used for SQL Server communication. To open port 1433, you need to perform the following steps:

1. Confirm whether the SQL Server service has been installed

To open port 1433, you first need to ensure that the SQL Server service has been installed. In Windows operating systems, you can check whether the SQL Server service is installed by following these steps:

- Open the "Services" application. In Windows 10, it can be opened by searching for "services.msc" and pressing Enter. In Windows 8 and earlier, it can be opened by searching for "services" and pressing Enter.​

- In the service list, find the service named "SQL Server". If the service is installed, its status will be displayed. If it is not installed, it will not be displayed.

If the SQL Server service is not installed, you need to install SQL Server and perform related configurations.

2. Start the SQL Server service

If the SQL Server service is installed but not running, you need to start the service. In the Windows operating system, you can start the SQL Server service by following these steps:

- In the "Services" application, find the service named "SQL Server".

- Right-click the service and select "Start" to start the service.

3. Configure the firewall

In order to allow external devices to access SQL Server, you need to add an inbound rule to the operating system's firewall settings to allow traffic on port 1433. In the Windows operating system, you can configure the firewall by following these steps:

- Open the "System and Security" option in the "Control Panel" and click "Windows Firewall".​

- In the left menu, click "Allow an app or feature through Windows Firewall."​

- In the dialog box that opens, select "Change settings".

- Find "SQL Server (MSSQLSERVER)" in the list and make sure the checkbox next to it is checked.​

- Click "OK" to save the settings.

4. Check the SQL Server configuration

To open port 1433, you also need to check the SQL Server configuration. In SQL Server, you can check by following these steps:

- Open SQL Server Management Studio (SSMS) and connect to the SQL Server instance.

- In the left navigation pane, expand the "SQL Server Configuration" node, and then click "Network Configuration".​

- In the right pane, find the configuration named "TCP/IP".​

- Make sure the "TCP Port" under "IP Address" is set to 1433. If not, change the port number to 1433.​

- Click the "Apply" button to save changes.

5. Restart the SQL Server service

After completing the above steps, you need to restart the SQL Server service for the changes to take effect. In the Windows operating system, you can restart the SQL Server service by following these steps:

- In the "Services" application, find the service named "SQL Server".​

- Right click on the service and select "Stop" to stop the service.​

- Wait about 1 minute, then right-click the service and select "Start" to start the service.

After completing the above steps, port 1433 should be open. External devices should now be able to access SQL Server through port 1433. Please note that to ensure security, it is recommended to configure SQL Server for encrypted connections to prevent unauthorized access.

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