Merge pull request #221058 from toddfoust/patch-8

Regional endpoints only support tls 1.2

Author: prmerger-automator[bot]

articles/azure-monitor/app/ip-addresses.md

@@ -21,17 +21,22 @@ Alternatively, you can subscribe to this page as an RSS feed by adding https://g
 
 You need to open some outgoing ports in your server's firewall to allow the Application Insights SDK or Status Monitor to send data to the portal.
 
-| Purpose | URL | IP | Ports |
-| --- | --- | --- | --- |
-| Telemetry | dc.applicationinsights.azure.com<br/>dc.applicationinsights.microsoft.com<br/>dc.services.visualstudio.com<br/>*.in.applicationinsights.azure.com<br/><br/> || 443 |
-| Live Metrics | live.applicationinsights.azure.com<br/>rt.applicationinsights.microsoft.com<br/>rt.services.visualstudio.com<br/><br/>{region}.livediagnostics.monitor.azure.com<br/><br/>*Example for {region}: westus2<br/>Find all supported regions in [this table](#addresses-grouped-by-region-azure-public-cloud).*|20.49.111.32/29<br/>13.73.253.112/29| 443 |
+| Purpose | URL | Type | IP | Ports |
+| --- | --- | --- | --- | --- |
+| Telemetry | dc.applicationinsights.azure.com<br/>dc.applicationinsights.microsoft.com<br/>dc.services.visualstudio.com<br/>\*.in.applicationinsights.azure.com<br/><br/> |Global<br/>Global<br/>Global<br/>Regional<br/>|| 443 |
+| Live Metrics | live.applicationinsights.azure.com<br/>rt.applicationinsights.microsoft.com<br/>rt.services.visualstudio.com<br/><br/>{region}.livediagnostics.monitor.azure.com<br/><br/>*Example for {region}: westus2<br/>Find all supported regions in [this table](#addresses-grouped-by-region-azure-public-cloud).*|Global<br/>Global<br/>Global<br/><br/>Regional<br/>|20.49.111.32/29<br/>13.73.253.112/29| 443 |
 
 > [!IMPORTANT]
 > For Live Metrics, it is *required* to add the list of IPs for the respective region aside from global IPs.
 
 > [!NOTE]
 > These addresses are listed by using Classless Interdomain Routing notation. As an example, an entry like `51.144.56.112/28` is equivalent to 16 IPs that start at `51.144.56.112` and end at `51.144.56.127`.
 
+> [!NOTE]
+> As described in the [Azure TLS 1.2 migration announcement](https://azure.microsoft.com/updates/azuretls12/), Application Insights connection-string based regional telemetry endpoints only support TLS 1.2. Global telemetry endpoints continue to support TLS 1.0 and TLS 1.1.
+>
+> If you're using an older version of TLS, Application Insights will not ingest any telemetry. For applications based on .NET Framework see [Transport Layer Security (TLS) best practices with the .NET Framework](https://learn.microsoft.com/dotnet/framework/network-programming/tls) to support the newer TLS version.
+
 ## Status Monitor
 
 Status Monitor configuration is needed only when you're making changes.