Mvc Windows Authentication Controller

net if we’re in Classic mode). Product/Project Management, Agile and Scrum, ALM. When a domain controller successfully authenticates a user via NTLM (instead of Kerberos), the DC logs this event. json is only useful in development environment with IIS Express; in this article, we will see how to support windows authentication for ASP. \$\endgroup\$ – Jason May 21 '14 at 19:39 \$\begingroup\$ It's normal, if you just started looking at authentication, but I can assure you that there is a lot to think. Intranet applications are the best places to use this authentication. For those interested, I have already published an article on ASP. Windows Authentication relies on the operating system to authenticate users of ASP. To make user defined classes for both IdentityUser and IdentityRole. With MVC 5, you can now apply an Authentication filters to your controller to allow users to authenticate to your site from various third-party vendors or a custom authentication provider. NET, MVC tips and tricks, best practices and patterns. NET MVC PartialView. 0 X8 - Plug-in Card - Raid Supported - 1 Total Sas Port(s) - 1 Sas Port(s) Internal Flash Backed Cache. Many of the features. In this exercise, you will update the Azure Store application to incorporate Live ID Authentication. I have an MVC 4 application which is open to all users, no login needed. In this video we will try to apply windows authentication for ASP. My website is published on an IIS7 server and the SQL Server is on other server. NET MVC 5 web app with log in, email confirmation and password reset (C#) ASP. Windows authentication is best suited for an intranet environment. config file for SpecsFor. Windows Authentication relies on the operating system to authenticate users of ASP. MVC 3 Windows authentication problems with redirect. The MVC Unobtrusive Validation library wants a complete match (from the source code):. My visual studio solution contains 2 projects ( web site, web api). Enterprise Products, Solutions and Services for Enterprise. See the example below. To authenticate users against Active Directory or AD when using Form Based authentication using LDAP. We can create a partial mock of the Login controller and set up an expectation for SetAuthenticationCookie because it's marked public and virtual. That's great, but I didn't have a working example that you, a curious developer, could download and play around with. NOTE: THIS Post was written when ASP. Windows Server WordPress Set up token authentication in MVC application From the the models and the controllers since the open id connect protocol will be used we'll need to install some. NET Forums on Bytes. Net Core MVC project. I only want to let you know that this is a simple and fast "hack" only to show a simple solution to get it work. If I were producing a traditional MVC Web application, one based on views, I’d embrace these new ASP. This is all you need to do to make forms authentication work with the MVC Framework. Model–View–Controller (usually known as MVC) is an architectural pattern commonly used for developing user interfaces that divides an application into three interconnected parts. I have a set of views (eg. Implementing Authentication in MVC application. NET MVC intranet application on IIS (Windows Server 2016 Standard) that uses Windows Authentication (Negotiate, NTLM, in that order). Securing Kibana with an IIS Reverse Proxy and Windows Authentication In the absence of Elastic’s for-pay X-Pack add-on package, the Elastic stack is lacking several notable features which, in my opinion, are absolutely required if it is to be used in production. I am building an intranet application using Visual Studio 2019 Community for creating a. Move NTLM above…. Windows authentication is the form of authentication in ASP. NET MVC has good IoC support (Controller factory), you could just inject the current principal into the c'tor of the controller. IdentityModel security library is a full-featured CORS implementation. As you can see, Windows Kerberos events allow you to easily identify a user's initial logon at his workstation and then track each server he subsequently accesses using event ID 672 and 673. NET MVC] Authentication và Authorize Một trong những vấn đề bảo mật cơ bản nhất là đảm bảo những người dùng hợp lệ truy cập vào hệ thống. Active Directory is Microsoft's flagship Identity management product. When getting started with ASP. NET MVC has good IoC support (Controller factory), you could just inject the current principal into the c'tor of the controller. The action method has also used Authorize attribute, which represents that authenticated user can access this action method. Open Credential Manager; Click "Add A Windows Credential" Populate the "internet or network address" field with the name and port number of the SQL instance you wish to store credentials for. When getting started with ASP. Net library in c#, vb. NET MVC Core. Select your web site 3. NET Identity) you can easily fullfill the task by using the AuthorizeAttribute provided in the System. its is actually a design Pattern to develop Application. As Eilon Lipton says, the idea of a partial view or controller action is a first-class concept in ASP. One of the new features in ASP. - Pete May 6 '13 at 14:36. These frameworks offer powerful features, and abstract away a good deal of pain associated with handling, routing, and responding to HTTP requests within an application. We want to make it very simple for developers to take applications inside their organization that use Active Directory for security and be able to move them to Azure Cloud using the same Windows authentication. On the Authentication page, right-click Windows Authentication, click Providers 5. Add an MVC Controller Secured by Stormpath. 0 discussed about integrating Gmail id and LinkedIn id for authenticating users in Asp. Forms authentication against users in database table Part 92 - How to implement forms authentication in MVC (Model View Controller. Microsoft® Windows® Identity Foundation (WIF) ASP. 1-866-807-9832 [email protected] Net's [Authorize] attribute is another cool feature that makes it easy to add authentication at the Controller level when building a website, but the real goldmine here is that like nearly everything else in ASP. Posted by Anuraj on Thursday, September 12, 2013 Reading time :1 minute. NET Identity Developing Secure ASP. The reader will learn how to log in, log out, and secure routes. NET Applications, the concept of a user and role is encapsulated in the IIdentity interface and the security context of the currently running code is defined in the IPrincipal interface. Windows 7 does not respond to 802. All three fields are passed to us by the. Authorization is deciding whether a user is allowed to perform an action. Are you running the site in IIS in both Windows Authentication and Anonymous authentication modes? – codingbadger May 22 '15 at 7:12 I'm still doing dev, trying to run it from VS 2013 using IISExpress. NET MVC pipeline and allow you to specify authentication logic per-action, per-controller, or globally for all controllers. Abstract: ASP. Analysis of Windows Authentication Protocols: NTLM and Kerberos. By Default, Windows authentication value is false in “applicationhost. The Add Controller dialog will appear. NET Identity system has become a trivial task. In this course, explore techniques for securing and controlling access to your ASP. What I am trying to do is use Azure Active Directory Authentication within this App so that users created in the Active Directory (this AD was created within the same subscription of Azure that the App resides on) can authenticate in the App. NET Forms Authentication turns MVC’s 401 errors into a redirect to a login page Your application’s web. config file by. There are two simple ways to get current user in MVC 5. How can one do this?. Setting up authentication in asp. Understanding Model-View-Controller (MVC) In Swift Written by Reinder de Vries on July 12 2017 in App Development Model-View-Controller (MVC) is an exceptionally powerful software architectural pattern for creating apps. config updates and a controller to show my login form and handle the submit credentials). NET MVC 3 ( Model view controller) application? - In this video we will try to apply windows authentication for ASP. Mvc while the ApiController authorize filter is from System. In this we are using Radius server Windows IAS as a backend server for the management authentication for the controller. Requiring SSL For ASP. NET MVC Controllers Dhananjay Kumar / Friday, January 15, 2016 In this blog post, we will learn to write unit tests for various MVC controller’s behaviors, such as view’s return types, redirecting to different actions etc. To configure the authentication we can use the element in web. This MVC online classes we covered basic to advanced topics, 100% for biginers MVC video tutorial, you follow the step by step MVC learning path. To enable Windows Authentication in Asp. Automate User Authentication and Billing Agilecos billing application for the SME is a stand-alone, web-based billing application that completely automates user authentication, registration, invoicing, billing, subscription management, account management, reporting, and newsletters. NET Core MVC applications more secure using Cookie-based authentication and authorization. Therefore, authentication fails if the FQDN or the custom host header that you use does not match the local computer name. For example: how to configure your application and webserver for using Windows Authentication (See my tip: Windows authentication on intranet website using AD and Windows Server 2012 (or higher)). I have enabled LDAP. Configure the browser to use a proxy (I use Squid 2. Mount a Windows Server 2012 R2 ISO or disc in the domain controller running a 64-bit version of Windows Server. Passport authentication 4. NET Core in IIS. NET Identity Developing Secure ASP. " The solution is some registry hacking to avoid loopback check:. MVC Core Template set to operate with Windows Authentication in Visual Studio 15. As soon as a big feature update is released, Microsoft quickly. Hello, I developed a website in Asp. I made this mistake - There are TWO settings Anonymous Authentication at the top and Windows Authentication at the bottom of Project Properties. Claims-based authentication in MVC4 with. It uses Visual Studio 2013 but the examples are applicable to all Visual Studio versions that support ASP. config (and anonymous authentication disabled):. Select your web site 3. Progress ® Telerik ® UI for ASP. NET MVC 6 provides an easy approach for implementing Authentication using Microsoft. NET Core application with help of operating system. NET WEB API. How can one do this?. A user logs into Windows desktop and can launch a browser to the application that sits inside the same firewall. Next, add a Web API controller by right-clicking the API folder and selecting Add, New Item. The claims are returned from the ASP. but I have few questions. Force Sign in as a different user while using Windows Authentication in asp. To do this, you will modify the log in page to add a Live ID Authentication section that includes a specially formatted link that sends users to the Windows Live ID sign-in page. NET MVC web application with an OWIN startup class and configure the application to use Slack as an external authentication provider. NET Core MVC: Authentication and Claim Based authorization with Identity A Visual Studio 2015 project which shows how to implement authentication and claim based authorization with ASP. How can one do this?. Mvc namespace to only allow specific Users and/or Roles for a whole Controller and/or for a. Windows Authentication: Used for intranet applications. Windows authentication (formerly named NTLM) is a secure form of authentication used in intranet environment to authenticate windows users against Microsoft Active Directory. NET Identity) you can easily fullfill the task by using the AuthorizeAttribute provided in the System. In order to use Active Directory Authentication for an SQL Server running on Linux we must configure the Linux server network and join it to our domain controller realm. Config if you don't have. The reason for this being that the client requirements, that although they use Active Directory they did not want to manage roles and responisbilities in an application through Active Directory. Visual Studio 2013 Developer Preview ships with ASP. Abstract controller base with credentials. There are two simple ways to get current user in MVC 5. The launch of a major Windows 10 update like the May 2019 Update isn’t the end of a process — it’s really just the beginning. Building Applications with ASP. Filling gaps in EUC vendor documentation. # re: MVC 4 Authentication I've been searching for the same topic and puzzled how there can be such a small number of published posts about it - and for that matter, so few questions about it at StackOverflow. NET MVC with default option, Visual Studio will using Individual Authentication method. its is actually a design Pattern to develop Application. The server should ideally be hosting the schema FSMO role. NET MVC 5 Menu using Site Map Provider & Bootstrap 3 Navbar Windows Keyboard Shortcuts Forms Authentication in ASP. The Stormpath middleware plugs right into the ASP. Today, we will learn how to implement and make ASP. How can one do this?. Learning Center › Quick Tips › Leniel Macaferi's Quick Tips › 'Login as another user' MVC 'Login as another user' MVC 4 Windows Authentication Http Windows authentication Logout Http status code 401 Asp. UseStaticFiles but before app. When applied to an entire controller class or a particular controller action, Authentication filters are applied prior to any Authorization filters. Windows Authentication; Forms Authentication. I was fascinated to hear ASP. Implementing Authentication in MVC application. Also, users are actively using their social identities from various social channels like facebook, youtube, twitter etc. The same controller might have actions that return both views and data. We want to make it very simple for developers to take applications inside their organization that use Active Directory for security and be able to move them to Azure Cloud using the same Windows authentication. Authentication filters process credentials in the request and provide a corresponding principal. MVC Core Template set to operate with Windows Authentication in Visual Studio 15. Pingback: Activare “WindowsAuthentication” pe IIS Express 8 (VS2012) IMHO, in this way, the authentication mechanism becomes unusable. On a domain controller or device with the Remote Server Administration. When used as a Web API controller, the IActionResult might be data (such as a list of products). 1) application with a stand-alone Web API Date: 4 August 2017 Author: Ruben B 60 Comments I've noticed that my post about Windows Authentication in an AngularJS application has gotten a lot of attention. You should aim to develop MVC sites which can be used with any authentication (or role) provider, whether it is ASP. To begin with, create a new ASP. Select your web site 3. I have never used Windows Authentication for ASP. MVC is common for all Language. I'm going to assume you've already got your web project configured to use Windows Authentication. This approach provides the ease to manage users. NET MVC 5 IAuthenticationFilter for Authentication Challenges September 27, 2013 net , gists , aspnet , csharp comments edit One of the new ASP. See the example below. NET MVC web application with an OWIN startup class and configure the application to use Slack as an external authentication provider. Windows authentication enables users to access the WebAPI methods using their Windows credentials and is built into IIS. NET Web API, ASP. As you would normally do with Action Filters, you can apply Authentication logic per Action, per Controller or Globally for all Controllers. Hi, I have an MVC 4 app that has enabled both Anonymous and Windows Authentication. NET Identity. I have a set of views (eg. Net MVC and Webforms application without using Providers. 0 X8 - Plug-in Card - Raid Supported - 1 Total Sas Port(s) - 1 Sas Port(s) Internal Flash Backed Cache. NET MVC 5, ASP. The authentication middleware should be added before the MVC in the pipeline. NET MVC site that is using Windows Authentication. On the Authentication page, right-click Windows Authentication, click Providers 5. NET MVC, by default, all the controller action methods are accessible to both anonymous and authenticated users. The Stormpath middleware plugs right into the ASP. NET MVC, respond to HTTP requests and determine the action to take based upon the content of the incoming request. NET MVC 5 web app with log in, email confirmation and password reset (C#) ASP. NET MVC 5 Authentication Filters using example Introduction Authentication Filter is a new feature in MVC 5 this filter run before any other filter, this filter is used to authenticate User which was not there in older version [MVC 4] there we were using Authorization filter or Action filter to Authenticate User, now new updated of MVC 5. This is done to separate internal representations of information from the ways information is presented to and accepted from the user. 5 MVC4 with C#: External authentication with WS-Federation Part 2 Testing a real STS March 11, 2013 66 Comments In this post we’ll go into more details of WS-Federation in. NET applications. NET MVC Using WCF "Add Service Reference" Question, is there a way to pass a specific user name, domain, and password for authentication. NET MVC Authentication using Microsoft Account? Posted on April 19, 2017 Written by admin 1 Comment In this tutorial, I will show you how to create an ASP. tdoes it mean u repeat d same process for all. NET MVC The Controller in ASP. Putting an [Authorize] attribute on my action methods or entire controllers was all I needed to get it working (besides, of course, the system. NET Core host process. Another requirement arose when we wanted to host specific controllers dedicated to a authentication method, all within one ASP. Without looking at MVC source code it would take me a long time to figure that out, and to be honest correlation between IsAuthenticated and AuthenticationType is still little bit confusing. 1-866-807-9832 [email protected] Change the mvc app's web. It worked fine on VS2011, but when I moved to VS2013 on the same machine, using IIS 7 problems ensued. CORS support in WebAPI, MVC and IIS with Thinktecture. Right click on the controllers folder> > Add >> Controller>> selecting MVC 5 Controller - Empty>> click Add. Start by creating a new class for your filter. Authentication is the process by which an application confirms user identity. NET MVC Items. The Internet Application project template already includes controllers and views that make use of Forms Authentication and membership features. Let's see how to authenticate users against Active Directory by explicitly asking users to input username and password in Asp. Canada (Français). NET MVC application. We can create a partial mock of the Login controller and set up an expectation for SetAuthenticationCookie because it's marked public and virtual. Enterprise Products, Solutions and Services for Enterprise. Recently, as part of my current project, I needed to open up a new browser window with HTML from an ASP. NET MVC (MVC) is an alternative to the classic WebForms model in ASP. I use this blog to post ideas and experiences about software development with the goal to help all the technology communities around the world. Response time is very slow on the first request to the site when the user is being authent. Pass data from View to Controller in ASP. This is a toy example, that simply waits for 10s before returning a message to the user, but the Task. Using OAuth 2. Join Mike Benkovich for an in-depth discussion in this video, Create a new MVC project, part of ASP. In this post, I shall cover implementing custom Roles Based Access Control (RBAC) and subsequent roles maintenance in the context of an intranet based ASP. Recently, I have had an ASP. If an app uses authentication, it is usually the best option to require authentication by default, and make exceptions for the cases where it is not required. He doesn't get any of the roles assigned on my Production server (which is not the same with the Primary Domain server/controller). NET MVC but are using IIS (as in a web role), you can use the URL Rewrite module, which is installed by default. NET Web forms, client server desktop applications. In this tutorial We will understand how to implement window authentication & authorization in MVC 5 application in visual studio 2015. This step-by-step article describes how to implement Windows authentication and authorization in an ASP. This pattern helps to achieve separation of concerns. Create an ASP. Hey Hi ! I am Converting one asp. This example can be useful to understand the interceptor mechanism in the Spring MVC chain-execution. NET MVC 6 provides an easy approach for implementing Authentication using Microsoft. I author this site, speak at conferences and events, contribute to OSS, mentor people. Go to Solution Explorer > Right Click on Controllers folder form Solution Explorer > Add > Controller > Enter Controller name (Home) > Select Templete "empty MVC Controller"> Add. While, launchSettings. NET MVC 5 which enables developers to apply authentication filters that provides an ability to authenticate users using various third party vendor. The token is passed as part of the url, while the IP and user-agent are determined from the HTTP request object. NET MVC 5 Authentication Breakdown", I broke down all the parts of the new ASP. But the Windows Authentication native module is what gets installed when you tick the Windows Auth component in Server Manager, and that's what you need in order for that authentication option to become visible in the Authentication GUI. By default, the ASP. config file by. Force Sign in as a different user while using Windows Authentication in asp. But if user enters localhost/Home/Index, he/she can reach our main site without l. Windows Authentication. NET MVC 4 Web API is one of new feature that can be found in Visual Studio 2012. NET MVC 5 Authentication Filters using example Introduction Authentication Filter is a new feature in MVC 5 this filter run before any other filter, this filter is used to authenticate User which was not there in older version [MVC 4] there we were using Authorization filter or Action filter to Authenticate User, now new updated of MVC 5. NET social identity providers isn’t exactly 100% straight-forward. Custom Authentication and Authorization in ASP. A Razor Page is very similar to the view component that ASP. The obstacle this tip is about is the Switch User functionality (like you might know from SharePoint). NET MVC but are using IIS (as in a web role), you can use the URL Rewrite module, which is installed by default. UseMvc to ensure that static files (html, css, js, etc) can be served without any authentication but MVC application-controlled routes and views/pages will follow. MVC provides a lot of infrastructure support for Forms Authentication. NET MVC 5 IAuthenticationFilter for Authentication Challenges September 27, 2013 net , gists , aspnet , csharp comments edit One of the new ASP. The identity created from the windows authentication could then be allowed to do different tasks, for example administration, or a user from the local authentication could be used for guest accounts, etc. NET makes it easy to build services that reach a broad range of clients, including browsers and mobile devices. Net Core MVC project. config updates and a controller to show my login form and handle the submit credentials). Authentication and Authorization with Windows Accounts in ASP. NET MVC as the default project template provides all the necessary controller code, model and view to register and login. Windows Integrated authentication is more secure than basic authentication, and it functions well in an intranet environment where users have Windows domain accounts. This MVC online classes we covered basic to advanced topics, 100% for biginers MVC video tutorial, you follow the step by step MVC learning path. net MVC authentication with Shibboleth Tag: c# , asp. 0 preview releases; it handles login and registration. apllication develop by using this pattern has 3 component model views and controller. If you would like to read the next part of this article series please go to Setting up Wi-Fi Authentication in Windows Server 2008 (Part 2). That's great, but I didn't have a working example that you, a curious developer, could download and play around with. We can use forms and windows authentication. It follows the Model-View-Controller design pattern. NET If you are providing web-based information for a closed group of users, such as a company or similar organisation with roles and membership, then Windows authentication make a great deal of sense for ASP. This is not a recommended way to authenticate internet applications and vulnerable to. NET applications without running Windows in a virtual machine, you’re going to love ASP. I am building an intranet application using Visual Studio 2019 Community for creating a. NET MVC 5 Identity: Implementing Group-Based Permissions Management; Extending Identity Accounts and Implementing Role-Based Authentication in ASP. Hi, I have an MVC 4 app that has enabled both Anonymous and Windows Authentication. NET MVC provides annotations that can be applied to the controller and action level as well. NET MVC 4 Web API is one of new feature that can be found in Visual Studio 2012. # re: MVC 4 Authentication I've been searching for the same topic and puzzled how there can be such a small number of published posts about it - and for that matter, so few questions about it at StackOverflow. Are you running the site in IIS in both Windows Authentication and Anonymous authentication modes? - codingbadger May 22 '15 at 7:12 I'm still doing dev, trying to run it from VS 2013 using IISExpress. NET Core Authorization for Windows, Local accounts OAuth Authentication with PKCE for a. If you need more information about the new certificate templates shipped with a Windows 2008 CA you can read this article. Login to your cloud management instance. NET Web API allows you create api or http based service or client endpoints. NET MVC Create and publish a NuGet package easily To create own blog engine or to use open source blog engine like MiniBlog. Mvc namespace to only allow specific Users and/or Roles for a whole Controller and/or for a. Customized Windows authentication in ASP. NET MVC 3 ( Model view controller) application? - In this video we will try to apply windows authentication for ASP. Is there a way to debug-level ASP. txt to realize. MVC - codeproject. That's great, but I didn't have a working example that you, a curious developer, could download and play around with. Step 3 By default MVC apps use Form Authentication and Simple Membership, so you need to make it "false" to run Windows Authentication. Microsoft® Windows® Identity Foundation (WIF) ASP. Configuring IDT for Windows AD Authentication. This post is about using Forms Authentication with the MVC Framework. NET MVC Core. Change the mvc app's web. It's not even hitting the Action method if i put a break point on it. Implement Authentication Windows in MVC 5 (Visual Studio 2015) IIS Express vs IIS How to implement windows authentication in ASP. Supporting both Local and Windows Authentication in ASP. Hello All, I want to implement Active Directory authentication of users who tries to log in to the application and I'm using MVC 5 with Web API controllers. The last step is to trigger the authentication handshake. Today, we will learn how to implement and make ASP. NET MVC is a set of server-side wrappers that allows using the Kendo UI widgets from C# or VB. We saw how MVC project comes with the default Membership API implementation and some default Controllers and view which can be utilized to easily integrate forms authentication in an MVC application. Consuming an ASP. This approach provides the ease to manage users. NET MVC 5 ( Model view controller) application Best. NET Web forms, client server desktop applications. Here is the connection string I am currently using:. Also modify the home view to display the claims of the user as well as the cookie properties:. NET Core Authorization for Windows, Local accounts OAuth Authentication with PKCE for a. For Kerberos authentication see event 4768, 4769 and 4771. For more information about creating Areas, you can visit my blog post entitled Creating Areas In ASP. If you're not using Windows authentication, I suggeset you to adopt a standard REST authentication mechanism like OAuth. NET MVC 3 ( Model view controller) application. It doesn't matter where you are. Windows Authentication. Typiquement, il y a deux différents types de serveurs web que vous utilisez lorsque vous créez et déployez une application ASP. The MVC Programming Model. NET Identity for MVC In this article, we are going to learn how to create a role, modify role, delete role and manage a role for a particular user using ASP. net using zxing. In this article you will learn how to enable Windows Authentication in MVC4 Web Application on IIS Express, just follow the given steps. That's where the AuthorizeAttribute comes into play. NET that uses an Active Directory domain controller to authenticate the user. Net web application below changes need to be done: Set authentication mode to “Windows” and impersonate to “True” in web. 文章分頁導航 ← jQuery SelectBox Change Event + AJAX HttpRequest – Slow UI Response on IE 9 / 10 / 11 Browser ( Solution ). Let’s design an ASP. DispatcherServlet is tightly coupled to the Spring inversion of control container for configuring the web layers of applications. The MVC pattern is widely used in program development with programming languages such as Java, Smalltalk, C, and C++. I have an ASP. And in this case, I’ll make the action filter a global action filter – eliminating the need to manually add the filter to every controller action. If you are inside the controller class current user can be fetched as follows, Do not forget to add namespace, Other scenario could be that you are not inside the controller class and want to fetch the user information. Corporate About Huawei, Press & Events , and More. Netlogon on the Skunkworks domain controller forwards the logon credentials via an RPC to the Netlogon service on the nearest Wildwood domain controller. Hotmail), Gmail, Facebook and Twitter for authentication before the user starts using our web application. If you don't, ERROR! I can workout further managing roles / permissions later on! I've already set my web. Step-3: Add new action into your controller for anonymous user Here I have used "Index" Action. Double check. After I read an article explains the work process of windows authentication, I guess this issue may be cause by the domain controller. To do this, you will modify the log in page to add a Live ID Authentication section that includes a specially formatted link that sends users to the Windows Live ID sign-in page. After implementing Custom Membership Provider and Custom Role Provider, I think that the time has come to define Account Controller with all the needed actions which help us authenticating users.