Use Active Directory Authentication When Windows Authentication Fails?

Mar 29, 2011

I have a web application (intranet based) which uses Windows Authentication. Unfortunately there are public computers that have public logins at some company locations. My web app doesn't support these public logins because I need to know the user workingSo, even though these public users are windows authentication users, my app will fail because I have no user account setup for that particular account. I want to then try Active Directory Authentication.In my Default.aspx.cs I'd have something like this

protected void Page_Load(object sender, EventArgs e)
userContext = new UserContext(); // If the authenticated user isn't a user in my system then throw an exception

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Jul 30, 2010

I am using Visual web Developer 2010 Express.

I want to create a small intranet web site with a login page that will authenticate against groiups of users in Active Directory. So for example if someone in Group A logs in they can get to web page X and if someone from Group B logs on they can get to web page Y. Is it possible to do this with the login controls without writing code? I thought it would be a fairly standard thing to do.

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How to provide authentication based on a Active directory security group for a webpage. I am using c# laungauge and .Net framework2.

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How To Use Authentication With Active Directory

Nov 23, 2010

I have my config setup like below:

<add name="ADConnectionString" connectionString="LDAP://myldap/CN=Users,DC=nevco,DC=local"/>
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<forms name=".ADAuthCookie" timeout="10" loginUrl="Login.aspx" defaultUrl="Default.aspx" />
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I can attempt to log on but every time it says I am using the incorrect username/password. Does it look like I am doing anything wrong above? Is there any way for me to find more information on why it's not finding my username/pass?


Do I need to provide a Username and Password in my membership/providers section?

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Sep 19, 2014

In the past I've developed web apps using Windows authentication however I'm now tasked with building a web app which needs to directly authenticate with Active Directory however I'm unsure about the security of doing this and have several questions.

As it stands I'm simply authenticating users by padding the username and password entered into a method which performs a search on active directory for the user's sAmAccountName, this is done within a try catch block. If the search can't run and throws an exception then the user isn't authenticated and if a result is found then the user is authenticated.

My first question is , how secure is doing this?

Secondly I need a way of storing possibly a session variable to ensure the user, once logged in, can access all the pages they have access to.

I was thinking of pulling the user's GUID out of AD and using that as the session variable.

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I currently support a web application that was built in ASP.NET.The application contains its own users and permissions. It handles its own authentication.I am wondering if it is possible to modify the existing application to utilize our Active Directory users and permissions. I would like to assign users and permissions to the application from Active Directory, rather than needing to go into the web app's admin panels EVERY TIME I need to change user permissions.

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Aug 6, 2010

I am trying to set up an intranet application with Forms Authentication configured for AD. (Don't ask why, it's for the boss). Anyways, I got it configured to where everybody on the domain can log in but I need to restrict it to a security group that IT has set up for me.

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Here is my web.config


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I'm using the code below to authenticate a user in Active Directory, but the password is sending in clear text. How can I hash my password and then send it to Active Directory?

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I want to authenticate against the Active Directory by using Forms authentication and Visual Studio ASP.NET/C#.Do you know any great tutorials/howto:s for implementing this?

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I am just getting started with MVC and I was wondering if someone could point me in the right direction for help with forms authentication using active directory? I have the sample site up but the results I have found on google have not been very helpful in answering this question. This site is going to be an intranet page that we want users to be able to access without logging in when they access it from our network while they must login when trying to access it from home.

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In my website i want to use active directory users for authentication. how can i do this.

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I'm using VS 2010 RTM and SQL Server 2008 on my clean development laptop, running Windows 7 Pro.

Using Visual Studio's Server Explorer, I can easily do an Add Connection by simply right-clicking, and then completing the dialog, and choosing "Use Windows Authentication". I can then click the button "Test Connection".

However, if I wish to do an Add Connection, and then choose "Use SQL Server Authentication", I get a message "Login failed for user 'appSlir'", as shown here:

When I try the same thing on my other development machine, which is VS 2008, SQL Server 2008, and Windows XP Pro, it works fine.

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I need to create a web page that authenticates users against an existing active directory. The domain is actually a cloud computing configuration where there is a domain controller and multiple other servers on the stack.

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I am working with this example from MSDN:

I get an error that says the server is not operational.

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C# - Setting Up IIS / Active Directory For Forms Authentication Security?

Mar 10, 2011

What's the easiest way to make Forms Authentication functional? Do I need to setup IIS/Active Directory? If so, how would you code that?

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Active Directory/LDAP :: Authentication Using A AD Security Group

May 5, 2010

I am trying to restrict access to the webpage using a security group. find the code in the web.config file:

<authentication mode="Windows"/>
<roleManager enabled="true" defaultProvider="AspNetWindowsTokenRoleProvider" />
<allow roles="enterprisenet.orgNMR Helpdesk Supt" />

Code in the code behind file of the aspx file i am trying to access:

if (User.IsInRole(@"enterprisenet.orgNMR Helpdesk Supt"))

Group is located in Helpdesk Supt . Its not working as expected.

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Security :: Intranet Site Authentication Against Active Directory?

Oct 2, 2010

I am trying to build a web app for an intranet site that for security reasons needs to make the user type in their Windows or Active Directory username pwd manually. I have previously worked with Integrated Windows Auth but in this case, we do want them to use type in their AD credentials.

I have been trying to look up how to do this and frankly I am a bit lost. It should be a fairly straightforward task and am hoping you can point me in the right direction, with some tutorials or examples. We will be using SSL so, dont have to worry about passing pwd in cleartext over the wire.

My environment is visual studio 2008 in C#, .net 3.5 if that matters.

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Security :: How To Make Authentication Using Active Directory Groups

Mar 8, 2010

I've built a 3.5 web application and want to be able to restrict access to particular pages. I have pages which should be able to be accessed by a user and then an adminshould be able to access all pages. I have created 2 Active Directory groups, one for normal users and one for admins so any users in the user group can see some pages then admins should have no restrictio

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