Preparing for TLS 1.0 and 1.1 End of Support in Azure Traffic Manager

Starting on October 31, 2024, Azure Traffic Manager will no longer support TLS 1.0 and 1.1. To avoid potential service disruptions and enhance security, all interactions with Azure services must be secured using TLS 1.2 or later. The older TLS versions are not known to be vulnerable, but TLS 1.2 and later provide improved security features such as perfect forward secrecy and stronger cipher suites.

To prepare for this change:

1. Confirm that your resources interacting with Azure services are using TLS 1.2 or later.
2. If you are already using TLS 1.2 or later exclusively, no further action is needed.
3. If you still rely on TLS 1.0 or 1.1, ensure you upgrade to TLS 1.2 or later by October 31, 2024.

Ensure your backend supports TLS 1.2 if you utilize HTTPS probes. No additional backend changes are necessary beyond confirming TLS 1.2 support.

References:

• Azure support for TLS 1.0 and TLS 1.1 will end by 31 October 2024
• Transport Layer Security (TLS) best practices with the .NET Framework
• Update to TLS 1.2
• Azure Traffic Manager documentation

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