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)
{try
userContext = new UserContext(); // If the authenticated user isn't a user in my system then throw an exception
}
[code]...
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Similar Messages:
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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Feb 8, 2010
LDAP - directory entry issue with out user and password using impersonate and windows authentication
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Sep 19, 2010
i have a problem with the users authentication on my site. I made <authentication mode="Windows"> in my web.config. The LoginView shows "mycomputermyusername" if i request the page. So far as well. Now i want to login with a different username. Users are stored in an Active Directory. My questions: wich setting i have to do, that user's account and password checked by Active Directory? how can i force the system to make a new login? Logout doesn't work, i always see my on account.
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Apr 21, 2010
How to provide authentication based on a Active directory security group for a ASP.net webpage. I am using c# laungauge and .Net framework2.
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Nov 23, 2010
I have my config setup like below:
<configuration>
<connectionStrings>
<add name="ADConnectionString" connectionString="LDAP://myldap/CN=Users,DC=nevco,DC=local"/>
</connectionStrings>
<system.web>
<authentication mode="Forms">
<forms name=".ADAuthCookie" timeout="10" loginUrl="Login.aspx" defaultUrl="Default.aspx" />
</authentication>
<membership defaultProvider="DomainLoginMembershipProvider">
<providers>
<clear/>
<add name="DomainLoginMembershipProvider"
type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
connectionStringName="ADConnectionString" attributeMapUsername="sAMAccountName" />
</providers>
</membership>
</system.web>
</configuration>
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?
UPDATE:
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.
Lastly I need to prevent people from trying to brute force my web application and to do that I've simply create a new session variable and once the count reaches 3 , they will not be able to make anymore attempts until the session variable has expired or they clear their cookies.
I think this is a more method of preventing numerous consecutive login attempts and wonder whether there's a better way? I'm considering using a captcha.
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Jul 26, 2010
I got a request from a specific client to rather use Active Directory than SQL Server Authentication, and was wondering if someone can give me a push in the right direction.I hoping to stick to using service contracts (interfaces) and just have a different implementation (injected with castle perhaps) for each client (though it will only be one client for now using Active Directory, instead of my usual aspnet membership / role providers), but as I never did this I'm unsure if that would be possible.
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Aug 4, 2010
we have 3 different domains and their active directory.i have to made a web serivce that when user gets logged in any of the domain and call that web service it takes the user credential.and then process the task and logged in the current user and domain of user. my iis configuration is 1) anonymous user disabled2)integrated authentication is enabled.and sending the user credentials as and then process the task and logged in the current user and domain of user.my iis configuration is1) anonymous user disabled 2)integrated authentication is enabled.
System.Net.CredentialCache.DefaultCredentials from calling application
our different servers are configured for any one of the 3 domains .when i use to call the web service (deployed on a server)from the same domain it
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Aug 4, 2010
if you have implemented Forms Authentication with Active Directory in ASP.NET 2.0, I have implemented [URL] mentioned on this page. But I am getting an error saying "Provider must implement the class 'System.Web.Security.RoleProvider".
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Mar 14, 2011
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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May 13, 2010
I am authenticating my ASP.Net application through Active Directory(Microsoft ADFS Proxy). Now I want to move this authentication to WCF service so that authentication will b done there and later on this service will b flexible. Let me know how to proceed for this and what are the binding types required for this
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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.
The problem I am having is that users in the SG can not log in to the site. I tried just adding
[Code]....
without a role manager but it didn't work. Then I tried adding the role manager below (among others...).
Here is my web.config
[URL]
Also, how should the user defined in connectionUsername and connectionPassword be set up? Must it be the same as the user I am running the application as?
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Feb 12, 2011
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?
DirectoryEntry entry = new DirectoryEntry(path, username, pwd);
try
{
//Bind to the native AdsObject to force authentication.
object obj = entry.NativeObject;
DirectorySearcher search = new DirectorySearcher(entry);
search.Filter = "(SAMAccountName=" + username + ")";
search.PropertiesToLoad.Add("cn");
SearchResult result = search.FindOne();
if (null == result)
{
return false;
}
//Update the new path to the user in the directory.
_path = result.Path;
_filterAttribute = (string)result.Properties["cn"][0];
}
catch (Exception ex)
{
throw new Exception("Error authenticating user. " + ex.Message);
}
return true;
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Jan 18, 2010
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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Aug 19, 2010
Authentication With Active Directory AD Getting propertie
[Code]....
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Sep 1, 2010
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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Jun 30, 2010
In my website i want to use active directory users for authentication. how can i do this.
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Sep 17, 2010
Just going to start making a web application and was wondering which was better, or at least what are the main differences between them (as it probably matters what I am using them for)?
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May 5, 2010
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.
There seems to be a problem/bug that prevents Add Connection with "Use SQL Server Authentication" to SQL Server 2008, when running on Windows 7 Pro.
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Jan 27, 2011
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.
I understand that objects from the System.DirectoryServices namespace can be used. However, I cant seem to path the code to the active directory through the LDAP://domain.com address. There doesnt seem to be any communication going on. I suspect there is some initial configuration necessary or security measures blocking the communication.
I am working with this example from MSDN: http://msdn.microsoft.com/en-us/library/ms180890(v=vs.80).aspx.
I get an error that says the server is not operational.
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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?
I was looking at this tutorial but it is a bit long, hard, and confusing: [URL]
Here's my web.config info:
[Code]....
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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" />
<authorization>
<allow roles="enterprisenet.orgNMR Helpdesk Supt" />
</authorization>
Code in the code behind file of the aspx file i am trying to access:
if (User.IsInRole(@"enterprisenet.orgNMR Helpdesk Supt"))
{}
else
{
Server.Transfer("noaccess.aspx");
}
Group is located in enterprisenet.org/Groups/NMR Helpdesk Supt . Its not working as expected.
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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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Mar 8, 2010
I've built a asp.net 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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