LKBEN11453: Open tcp port for sql server 2019 on windows server 2019


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LKB | Created: 14/10/2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False

Author: Wim Peeters - Keskon GmbH & Co. KG

Latest update: 14/10/2020 | Comment:


Symptom

You cannot connect to your sql server because the firewall blocks your connection.

Cause

This is by design.

Solution

To connect to your sql server you need to open port 1433. This can be done in an old way like this:

netsh firewall set portopening protocol = TCP port = 1433 name = SQLPort mode = ENABLE scope = SUBNET profile = CURRENT

Microsoft recommends to use the newer syntax with advfirewall.

netsh advfirewall firewall add rule name = SQLPort dir = in protocol = tcp action = allow localport = 1433 remoteip = localsubnet profile = DOMAIN 

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.

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