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---
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title: Authentication
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author: rick-anderson
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description:
keywords: ASP.NET Core,
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ms.author: riande
manager: wpickett
ms.date: 10/14/2016
ms.topic: article
ms.assetid: 981852c9-78f9-4590-aaee-9d50a2838dfe
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ms.technology: aspnet
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ms.prod: asp.net-core
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uid: security/authentication/index
---
# Authentication
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* [Community OSS authentication options ](community.md )
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* [Introduction to Identity ](identity.md )
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* [Enabling authentication using Facebook, Google and other external providers ](social/index.md )
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* [Enabling QR Code generation in ASP.NET identity ](identity-enable-qrcodes.md )
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* [Configure Windows Authentication ](windowsauth.md )
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* [Account Confirmation and Password Recovery ](accconfirm.md )
* [Two-factor authentication with SMS ](2fa.md )
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* [Using Cookie Authentication without ASP.NET Core Identity ](cookie.md )
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* [Azure Active Directory ](azure-active-directory/index.md )
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* [Integrating Azure AD Into an ASP.NET Core Web App ](https://azure.microsoft.com/documentation/samples/active-directory-dotnet-webapp-openidconnect-aspnetcore/ )
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* [Calling an ASP.NET Core Web API From a WPF Application Using Azure AD ](https://azure.microsoft.com/documentation/samples/active-directory-dotnet-native-aspnetcore/ )
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* [Calling a Web API in an ASP.NET Core Web Application Using Azure AD ](https://azure.microsoft.com/documentation/samples/active-directory-dotnet-webapp-webapi-openidconnect-aspnetcore/ )
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* [Securing ASP.NET Core apps with IdentityServer4 ](https://identityserver4.readthedocs.io/release/ )