---
title: Authentication | Microsoft Docs
author: rick-anderson
description: 
keywords: ASP.NET Core,
ms.author: riande
manager: wpickett
ms.date: 10/14/2016
ms.topic: article
ms.assetid: 981852c9-78f9-4590-aaee-9d50a2838dfe
ms.technology: aspnet
ms.prod: aspnet-core
uid: security/authentication/index
---
# Authentication

* [Introduction to Identity](identity.md)

* [Enabling authentication using Facebook, Google and other external providers](social/index.md)

* [Account Confirmation and Password Recovery](accconfirm.md)

* [Two-factor authentication with SMS](2fa.md)

* [🔧 Supporting Third Party Clients using OAuth 2.0](oauth2.md)

* [Using Cookie Middleware without ASP.NET Core Identity](cookie.md)

* [Azure Active Directory](azure-active-directory/index.md)

  * [Integrating Azure AD Into an ASP.NET Core Web App](https://azure.microsoft.com/documentation/samples/active-directory-dotnet-webapp-openidconnect-aspnetcore)

  * [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)

  * [Calling a Web API in an ASP.NET Core Web Application Using Azure AD](https://azure.microsoft.com/en-us/documentation/samples/active-directory-dotnet-webapp-webapi-openidconnect-aspnetcore)

* [Securing ASP.NET Core apps with IdentityServer4](https://identityserver4.readthedocs.io)