My firewall is blocking the connection. How does this relate to TLS 1.2 and the ODBC driver?

By: USER7139
28 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
My firewall is blocking the connection. How does this relate to TLS 1.2 and the ODBC driver?
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The firewall needs to allow traffic on the SQL Server's port (typically 1433) using TLS 1.2 or higher. Older TLS versions might be blocked by the firewall. Verify the firewall rules and ensure they permit encrypted connections.
Answered on 28 Agustus 2025

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