Identifying TLS Version Using Azure SQL Auditing

Understanding TLS and Its Role in Database Security

Transport Layer Security (TLS) is the cornerstone of secure data transmission over the internet. It safeguards data integrity and confidentiality during communication between clients and servers. In the context of Azure SQL Database, TLS plays a vital role in encrypting and securing connections, thereby thwarting potential eavesdropping and data tempering attempts.

The client_tls_version_n Field in Azure SQL Auditing

The field records the version of the TLS protocol used by client when establishing a connection to the Azure SQL Database. Monitoring this field is crucial for several reasons:

1. Ensuring Compliance with Security Standards: Many industries mandate the use of specific TLS versions to meet security guidelines. The client_tls_version_n field helps verify compliance with these standards.
2.Identifying Outdated TLS Versions: Older TLS versions, like TLS 1,0 and 1.1, are considered less secure. This field helps in identifying connections that use these outdated protocols, signaling a need for upgrades to maintain robust security.
3. Troubleshooting Connection Issues: Sometimes, connection failures can result from TLS version mismatches. The client_tls_version_n field aids in diagnosing such issues.





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