With this release, customers can opt into TLS 1.2 only for all connections through the public cluster endpoint. To support this, the new property **minSupportedTlsVersion** is introduced and can be specified during cluster creation. If the property is not set, the cluster still supports TLS 1.0, 1.1 and 1.2, which is the same as today's behavior. Customers can set the value for this property to "1.2", which means that the cluster only supports TLS 1.2 and above. For more information, see [Plan a virtual network - Transport Layer Security](https://docs.microsoft.com/azure/hdinsight/hdinsight-plan-virtual-network-deployment#transport-layer-security).
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