Azure support for TLS 1.0 and TLS 1.1

Josue Gonzalez 70 Reputation points
2024-05-13T20:30:03.7733333+00:00

Microsoft released the following announcement about TLS 1.0 and 1.1 end of support: https://azure.microsoft.com/en-us/updates/azure-support-tls-will-end-by-31-october-2024-2/

Old devices using TLS 1.0 (that cannot be upgraded) will continue to be able to send TLS 1.0 requests via ExpressRoute to Azure? Microsoft will eventually block TLS 1.0 traffic over its networks and on its VMs at the OS layer?

Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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Azure Virtual Network
Azure Virtual Network
An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.
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Azure ExpressRoute
Azure ExpressRoute
An Azure service that provides private connections between Azure datacenters and infrastructure, either on premises or in a colocation environment.
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Accepted answer
  1. TP 100.1K Reputation points
    2024-05-13T20:58:25.14+00:00

    Hi,

    There's no announcement/documentation of intent to block TLS 1.0 traffic flowing over Azure vNets. The vNet (or ExpressRoute) by itself isn't inspecting the traffic at that level so has no knowledge of TLS version being used.

    Additionally, there's no announcement of intent to proactively start blocking TLS 1.0 on windows operating systems where it is already enabled. There is announcement for newer windows os versions that have TLS 1.0/1.1 blocked by default, but it can still be re-enabled even on these if needed.

    TLS 1.0 and TLS 1.1 soon to be disabled in Windows

    https://techcommunity.microsoft.com/t5/windows-it-pro-blog/tls-1-0-and-tls-1-1-soon-to-be-disabled-in-windows/ba-p/3887947

    Have not seen any announcements to block TLS 1.0 on Azure VMs in general (regardless of OS) either.

    Please click Accept Answer and upvote if the above was helpful.

    Thanks.

    -TP

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