Merge branch 'main' of https://github.com/MicrosoftDocs/SupportArticles-docs-pr

Author: Deland-Han

support/entra/entra-id/app-integration/fiddler-capture-ssl-traffic.md

@@ -0,0 +1,44 @@
+---
+title: Capture SSL Traffic with Fiddler
+description: Introduces how to make Fiddler to capture SSL traffic in two specific scenarios.
+ms.service: entra-id
+ms.date: 04/15/2025
+ms.reviewer: bachoang, v-weizhu
+ms.topic: how-to
+ms.custom: sap:Enterprise Applications
+---
+# Capture SSL traffic with Fiddler
+
+This article provides instructions to use Fiddler to capture Secure Sockets Layer (SSL) traffic to troubleshoot Microsoft Entra apps.
+
+## Scenario 1: Capture Node.js web traffic with Fiddler
+
+To capture Node.js web application traffic using Fiddler, you need to proxy Node.js requests through Fiddler. The default proxy is 127.0.0.1:8888. To do so, before running the `npm start` command to start the Node.js server, enable the proxy settings by running the following commands:
+
+```nodejs
+set https_proxy=http://127.0.0.1:8888
+set http_proxy=http://127.0.0.1:8888
+set NODE_TLS_REJECT_UNAUTHORIZED=0
+```
+
+> [!NOTE]
+> To find out which port Fiddler is listening on, select **Tools** > **Options** > **Connections** from the Fiddler menu.
+
+## Scenario 2: Capture the Azure Key Vault secrets client (from Azure SDK for .NET) with Fiddler
+
+To capture Azure Key Vault traffic using Fiddler, set Fiddler as a proxy by setting the `http_proxy` and `https_proxy` environment variables in the application code as follows:
+
+```csharp
+
+using Azure.Identity;
+using Azure.Security.KeyVault.Secrets;
+...
+// add these lines in your method to call Azure Key Vault
+Environment.SetEnvironmentVariable("HTTP_PROXY", "http://127.0.0.1:8888");
+Environment.SetEnvironmentVariable("HTTPS_PROXY", "http://127.0.0.1:8888");
+
+var client = new SecretClient(new Uri(keyVaultUrl), credential);
+KeyVaultSecret result = client.GetSecret("MySecret");
+```
+
+[!INCLUDE [Azure Help Support](../../../includes/azure-help-support.md)]

support/entra/entra-id/toc.yml

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     href: app-integration/capture-https-traffic-fiddler-entra-id-app.md
   - name: Capture Python web app HTTPS traffic with Fiddler
     href: app-integration/capture-https-traffic-fiddler-python-app.md
+  - name: Capture SSL traffic with Fiddler
+    href: app-integration/fiddler-capture-ssl-traffic.md
   - name: Filter Fiddler traffic using domain names and client processes
-    href: app-integration/filter-fiddler-traffic-using-domain-name-client-process.md
+    href: app-integration/filter-fiddler-traffic-using-domain-name-client-process.md