Mixed Mode Authentication Against AD And Fallback To The Database If It Fail With Membership Providers?
Jul 12, 2010
my user will use form authentication against Active Directory or database. Theres no Windows Integrated Authentication there!!
What i want is when the user submit the authentication form, it will try to validate the user against Active Directory and if it fail, try with the database.
How can i do that? What i had in mind was to build a custom membership provider that will encapsulate the logic but im not sure how to start.
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Oct 26, 2010
To begin with I work on the large application, that has a WinForms client and server. Server in our case is the set of WCF services. There is one service that is responsible for authentication of users. The logic of authentication is custom and complex and authentication service uses different membership providers.
We want to protect the access to server services for non-authenticated users. The users must firstly authenticate and than use other services (users in this case are the other systems, services, WinForms client, etc.). On this basis, we decided to use the ASP.NET Url/File Authorization feature.
So, I set on the ASP.NET compatibility mode, allowed cookie in all binding configurations, added AspNetCompatibilityRequirements attribute to our services and added the followingconfigurations to config:
<authentication mode="Forms">
<forms cookieless="UseCookies">
<credentials passwordFormat="Clear" />
</forms>
</authentication>
<authorization>
<deny users="?" />
</authorization>
...
<location path="AuthenticationService.svc">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
In the authenticate method of our authentication service I add the following code:
public AuthenticationResult AuthenticateUser(string username, string password)
{
AuthenticationResult result = new AuthenticationResult();
result = Authenticate(username, password);
if (result.IsAuthenticated)
FormsAuthentication.SetAuthCookie(username, true);
return result;
}
Next, I wrote the following code:
var authClient = new AuthenticationServiceClient();
var result = authClient.AuthenticateUser("user", "password");
var otherClient = new OtherServiceClient();
var temp = otherClient.DoSomething();
But after authentication I can't access to OtherServiceClient...
So, how can I share the call context between the WCF services calls? Could anybody provide some useful articles about this question?
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Oct 19, 2010
How do you back-door authenticate Windows users into a website using forms authentication running on IIS 7.0?
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Jan 13, 2011
I have a question about mixed mode authentication. I've been doing some research into this, but I haven't found the answer yet, so I figured I'd just ask:
I have an internal application that requires login. Right now it's using forms-based authentication. We'd like to make it so that, if you're internal and authenticated against Active Directory, you don't need to login to the application. However, if you're coming in from the outside (or don't have an AD account), it would then require them to login via the forms-based Login.aspx page.
From my research, it seems that the only way to do this is to enable forms based auth as the default membership provider, then on the back-end do a check at Page_Load to pull their login name, match it against the .NET membership and then authenticate them automatically - am I wrong on this?
The documents I've found all seem to point to the user having to login anyway, just the login being stored in AD - instead of having the user just login once to their machine in the morning and using that to verify them and their roles in subsequent applications.
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Jan 20, 2011
I'm having a tough time implementing mixed-mode authentication (windows & forms based) for my application using IIS 7. Doing it in IIS6 is easy, but the process doesn't translate to 7/7.5 - and my research has led to me to conflicting answers, none of which.
I have redirect page called WindowsLogin.aspx, and a forms-based one called Login.aspx. I'm having difficulty enabling Windows authentication for just WindowsLogin.aspx.
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Sep 14, 2011
I am trying to implement single sign on for users within our domain and if the are not then they get re-directed to the login screen to use forms authentication.
I have followed this tutorial below
however I get two issues firstly if I go to my forms authentication page no css or images now display and if i try to login i get an error.
If I go to the login page which should recognise me from the AD I get 401 - Unauthorized: Access is denied due to invalid credentials. You do not have permission to view this directory or page using the credentials that you supplied.
[URL].....
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Jan 26, 2010
I created a mixed mode authentication mechanism based on a few of the articles that I have read on this topic. It's similar to something like this: [URL]
Basically, there are two web applications. One accepts the Windows Auth and one accepts Forms Auth. The Windows Auth then creates a forms auth ticket and passes control to the Forms auth application. This solution works fine when both applications are housed within the same IIS web site.
Now, order to control the security of this solution we set up multiple IIS web sites on the same machine. Web Site 1 serves external traffic (forms auth) and Web Site 2 serves internal traffic (windows auth).
So the design is that an internal user can hit the site using Windows auth via a internal name (myserver) while the external users use Forms Auth hitting [URL].
All that said, the solution works when the two applications are in the same site. Doesn't work when they are in different sites.
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Jan 9, 2010
I had a problem login management studio (Sql server 2005) using windows authentication because it doesn't show me any server name to connect and if I put my computer name and user name (my-PCpatel) login was failed.
So, I decided to uninstall it and install it again using mixed mode authentication. After installation I select sql server authentication instead of windows authentication and put login name as "sa" and password that I had put it during installation. But the connect button is dark gray(the way I can not select it or press it on) while the other button (cancel, help, option) can be selected or pressed.So, why am i not able select or click on connect button?
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Oct 18, 2010
Just to describe the scenario. I have a website. This lives on a webserver. On that webserver is an SQL server. The website connects to this database using windows authentication. I have written a windows form application that connects to the SQL Server on the webserver. This application is being run from a location on out intranet. The Winform application use SQL authentication to connect to the database. The SQL Server didn't have mix mode authentication enabled. So I enabled it. The winform application could now connect to the SQL Server.
This is where it starts getting a little strange.
The Website that was already connecting find using integrated authentication starts failing with:
Login failed for user 'NT AUTHORITYNETWORK SERVICE'
When you are enabling mixed mode authentication, you are adding another authentication method, why would the original Windows authentication fail?
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Mar 8, 2011
Unfortunately, all the examples for Forms Authentication Code Behind w/ Custom Role and Membership Providers I find online are written with a VB.NET code behind and I need a C# code behind. I need a codebehind that will do the following:
authenticate user upon login button click
if user active_flag=0 (false) OR password!=@password, display error: "Access Denied"
if user admin_flag=1 & active flag=1 (true), redirect to admin_pageszipsearch.aspx
if user admin_flag=0 (false) & active_flag=1 (true), redirect to pageszipsearch.aspx
Default.aspx Code:
<asp:Login ID="LoginUser" runat="server" EnableViewState="false" RenderOuterTable="false">
<LayoutTemplate>
<span class="failureNotification">
<asp:Literal ID="FailureText" runat="server"></asp:Literal>
</span>......
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Aug 24, 2010
I have a web application where users can authenticate using either SiteMinder or Windows domain accounts. This is actually configured as two separate virtual directories within IIS 6. Both applications need to use the same instance of SSRS. Is it possible to configure the SSRS web application so that if a user is authenticated by SiteMinder it impersonates a Windows account, but if they are already Windows-authenticated that account is used instead?
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May 20, 2010
I am new to using the membership provider. I have been working in a small shop that has very focused programming and we are starting to venture out as our needs have grown. My question is the following:
Once I have created the asp schema and I set up users. How do I perform database access using those user accounts? I know how to perform access using a database account (schema), but do not understand how to use a user that only exists in a user table to access data tables.
Do I use an anonymous account and control access on the front end?
How to I track audit fields?
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Oct 16, 2010
I wanted my local iis running application to connect my database in sql authentication mode rather than windows mode,
but it is showing errors of " Cannot open database "aspnetdb" requested by the login. The login failed.
Login failed for user 'DBUser'. ". i also ublocked port from firewall,and allowed remote connection of mssql from sql manager, enabled TCP/IP and named piped protocols from SQL surface config, and with sql manager i also changed server authentication mode to sql from windows.
my datastring is <add connectionString="Data Source=PARTHIV-PCSQLEXPRESS;Initial Catalog=aspnetdb;User ID=******;Password=******/" name="LocalSqlServer" providerName="System.Data.SqlClient" />
i made a user named DBUser in database as well i don't understand where it gone wrong ???
here is error log
[Code]....
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Jan 8, 2010
I have just installed SQL Server 2005. I selected windows mode authentication. I am not able to login in management studion. Now, I want to use mixed and server authentication option inplace of windows authentication. so, would that be possible after installation.
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Apr 22, 2010
This is annoying more than anything, but I have no working Intellisense when I use any of my custom web controls in .aspx/.ascx pages. Intellisense in standard <asp:...> controls are fine, as it is in all code-behind files etc.
I'm pretty sure this is caused by Visual Studio attempting to analyse the website's bin folder for custom web controls, and throwing a hissy fit when it gets to one of the DLLs - a (mixed-mode) 64-bit managed C++ assembly (I'm running 64-bit Win 7). It seems that Visual Studio tries to load this assembly, and fails, due to VS being a 32-bit app.
I looked for an option to get VS to ignore the 64-bit assembly (there are no web controls in it - they exist in another standard assembly), but alas, nothing to be found.
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Aug 11, 2010
Our site has got two ASP.NET membership providers. The built in one, and a custom one (SqlMembershipProvider.
I am able to log into both no problems, but I don't necessary require the ability to have both logged in at the same time.
The issue I have is as follows:
User "person_a@site.com" logs into the built in provider. They then navigate to the section of the site where we require the custom provider.
On this page, I can check if they are authenticated, and get their username. I can then get a MembershipUser object form the custom providers GetUser method. (HttpContext.Current.User.Identity.Name)
It is possible (and very likely) that the username "person_a@site.com" could also exist in the users for the custom provider.
But, I don't want them to be logged in here, as they haven't authenticated against the custom provider.
So, is it possible to check which proivider HttpContext.Current.User was generated from.
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Jan 17, 2011
I have built two websites, both of them use a custom membership provider I have written myself.
One of these sites is already a long time online and runs fine. Now I have installed the other site on the same webserver in the same Web as a different application. Also have I given a seperate ApplicationPool for each solution.
If now the client logs on to one site, he looses the session on the other and vice versa. It's not possible to be loged on on both sites together. All the rest works fine.
What is the connection between the two sites. Is it necessary to change something in my membership providers?
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Feb 18, 2011
I'm trying to use both the default Membership and Profile Providers and can not for the life of me get both to work at the same time. I'm using MS Visual Web Developer 2010 Express and when I create a new Project I get access to the Membership but not the Profile. When I create a new Website I get just the opposite i.e. access to Profile and not Membership. What do I need to do to get access to both?
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Aug 25, 2010
Using the a Membership provider and the MVC framework, is it possible that routes are dynamically changed so that a already logged in user goes to his own page, rather than the default.
At the moment I go to the default. If the user is already logged in or not, there I do a redirect to their own page. This can't be the correct way! Can it?
In RegisterRoutes I have this
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute("Default",
"{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = "" }
);
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Apr 1, 2011
I know this question is asked (and answered) a lot already, but I believe my situation is unique.
We are using the ASP.NET SqlMembershipProvider. However, we also have some less-secure content we would like to secure by adding users directly to the web.config, like so...
<forms loginUrl="login.aspx" defaultUrl="default.aspx">
<credentials passwordFormat="Clear">
<user name="user1" password="123" />
<user name="user2" password="456" />
</credentials>
</forms>
Is it possible to use this method alongside a SQL Membership Provider? If so, how?
I know it's bad practice to do this. This is only a stepping stone as we move parts of our website into the asp.net application. We would like some of those password to be easily editable without going to the database.
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Mar 22, 2010
I am writing a login routine that uses a .NET login control and I have a membership provider as well and set it all up in the config file. But I don't plan on using a connection string as I will be calling a web service in my ValidateUser function. Do I need the connection string in the config because it seems to throw an error if I don't have it.
In that case if you need it then wouldn't it be better to treat this membership provider class more as a normal class and just make calls to it directly like any class and not put any setting on my login control and remove the entry from my web.config
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Feb 25, 2010
In my web application am using ASP.Net Membership for authentication ann role management.But now i have a situation where i need to authenticate multiple clients against different DB based upon the URL request being send. Below is my web.Config Details.
<authentication>
<forms loginUrl="Login.aspx" defaultUrl="Login.aspx" />
</authentication>
<membership defaultProvider="QuickStartMembershipSqlProvider">
<providers>
<clear/>
<add connectionStringName="MEMBERSHIP_AND_ROLES" minRequiredPasswordLength="5"
minRequiredNonalphanumericCharacters="0"
enablePasswordReset="true"
requiresQuestionAndAnswer="false"
applicationName="SecurityQuickStart"
requiresUniqueEmail="true" passwordFormat="Hashed" name="QuickStartMembershipSqlProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
</providers>
</membership>
<roleManager enabled="true" defaultProvider="QuickStartRoleManagerSqlProvider">
<providers>
<clear/>
<add connectionStringName="MEMBERSHIP_AND_ROLES" applicationName="SecurityQuickStart" name="QuickStartRoleManagerSqlProvider" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
</providers>
</roleManager>
ConnectionString.Config:
<add name="MEMBERSHIP_AND_ROLES" connectionString="Data Source=x.x.x.x;Initial Catalog=xxx;User ID=xxx;Password=xxx" providerName="System.Data.SqlClient"/>
Am using form authentication for user authentication. In my login page am using Membership.ValidateUser(username,password),which is using default membership provider. Now my situation is i need to override the default DB and connect to multiple DB based on URL request send to my web server.
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Apr 3, 2010
I'd like to know if its possible to use two membership providers within a single application. I need to have a membership provider "power users" and administrators on a site and a different one for clients and customers who will want to register on the site. I'd like to know if its possible to have two different membership providers to handle these two different sets of users. If it is, how do i go about it?
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Dec 13, 2011
I have the requirement for internal users to acces our web app without loggin in manually so using windows authentication, external users need to be refered to a form based authentication.
Now I have implemented the solution [URL] ....
However I also need to employ roles for authorization. The forms side is all set up but I cannot seem to get it to work for the windows side of things, looking for implementing a mixed mode involving roles?
I tried adding in an extra provider
<providers>
<add name="SqlRoleManager" type="System.Web.Security.SqlRoleProvider" connectionStringName="aspnetdbConnection_dev" applicationName="Corp.Web.GSP"/>
but how to configure it for usse only by the windows users. Secondly if I set it as the default where I have code like
if (Roles.IsUserInRole("Internal") || Roles.IsUserInRole("SysAdmin") || Roles.IsUserInRole("Sales"))
{
I get an
Method is only supported if the user name parameter matches the user name in the current Windows Identity error
<add name="WindowsRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" />
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Mar 27, 2010
I'd like to know how membership providers works under the hood, if it uses cookies, session, the principal and identity thread objects, etc.. etc.. where can I find information?
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