I am working on an academic project, and we have to authenticate against Active Directory Domain Services accounts from a web application.
I have followed this msdn tutorial, and as specified I changed the ldap path in the Login_Click() function.
Everything went fine, but when I tried to login in the web app, I got this:
Error authenticating. Error authenticating user. Logon Failure:
unknown user name or bad password ... at
System.DirectoryServices.DirectoryEntry.get_NativeObject()...
Here is the error screenshot:
Web app's error screen
For information, I filled the adPath like this (in the Login_Click() method):
string adPath = "LDAP://DC.datacenter.mex.am.company.net/"
And we also tried with this :
string adPath = "LDAP://DC.datacenter.mex.am.company.net/DC=datacenter,DC=mex,DC=am,DC=company,DC=net/"
The credentials we tried to login with are perfectly valids, because we tested them to access to Active Directory accounts ... But the same credentials don't work from the asp .net web app !!!
I searched everywhere on the net, but came with nothing ...
Has anyone got an idea about that ??
You can do authentication via PrincipalContext
using (var context = new PrincipalContext(ContextType.Domain,
yourdomain,
UsernameforAD,
ADUserPassword)
{
bool isAuthenticated= context.ValidateCredentials(username,password);
}
Related
I have a website where a users identity is needed, I'd really prefer not to make them create yet another username/password combo that they have to remember
are there SDK's for allowing authentication from an Microsoft account?
That's rather easy as a default empty template of an ASP.NET 4.5 website shows how to have OAuth2 authentication with google/facebook/liveid/twitter.
http://www.asp.net/aspnet/overview/aspnet-45/oauth-in-the-default-aspnet-45-templates
Check out the Principal Context class. You can create it using a localhost (Machine) or domain context and use the ValidateCrentials(string username, string password) method to authenticate using Windows credentials.
http://msdn.microsoft.com/en-us/library/bb154889.aspx
Here's how I've used it in my website. (Put this in a POST method of your authentication controller or something)
The code below will take a username say "bob" or "localhost\bob" or "DOMAIN\bob" etc., and get the right PrincipalContext for authenticating the user. NOTE: it's case insensitive here.
public bool ValidateCredentials(string username, System.Security.SecureString password)
{
string domain = Environment.MachineName;
if (username.Contains("\\"))
{
domain = username.Split('\\')[0];
username = username.Split('\\')[1];
}
if (domain.Equals("localhost", StringComparison.CurrentCultureIgnoreCase))
domain = Environment.MachineName;
if (domain.Equals(Environment.MachineName, StringComparison.CurrentCultureIgnoreCase))
using (PrincipalContext context = new PrincipalContext(ContextType.Machine))
{
return context.ValidateCredentials(username, password.ToUnsecureString());
}
else
using(PrincipalContext context = new PrincipalContext(ContextType.Domain))
{
//return context.ValidateCredentials(domain + "\\" + username, password.ToUnsecureString());
return context.ValidateCredentials(username, password.ToUnsecureString());
}
}
Microsoft provides the Live Connect SDK for integration Microsoft services into your applications, including the Microsoft Accounts identity provider.
There is a specific example on Server-Side Scenarios which should cover all you need to get integrated.
Do you mean from an active directory windows account? If so you could use windows authentication and just have the index page sign them in automatically.
http://msdn.microsoft.com/en-us/library/ff647405.aspx
Use the following commands in your code behind file to get the relevant information for signing in:
System.Security.Principal.WindowsIdentity.GetCurrent().Name
User.Identity.IsAuthenticated
User.Identity.AuthenticationType
User.Identity.Name
The amount of changes / rebranding / deprecation / dead links from Microsoft drives me crazy. In any case, the latest version of this from what I've found is "Microsoft Account external login", which can be first set up on the Microsoft Developer Portal.
I found a guide that explains how to do this for .Net Core at https://learn.microsoft.com/en-us/aspnet/core/security/authentication/social/microsoft-logins, though the first half (e.g. setting the Redirect URI) isn't framework-specific.
I also found some relevant source code for .Net Core at https://github.com/aspnet/Security/blob/master/src/Microsoft.AspNetCore.Authentication.MicrosoftAccount/MicrosoftAccountOptions.cs, which shows some of the Claims (user details) that are retrieved:
ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "id");
ClaimActions.MapJsonKey(ClaimTypes.Name, "displayName");
ClaimActions.MapJsonKey(ClaimTypes.GivenName, "givenName");
ClaimActions.MapJsonKey(ClaimTypes.Surname, "surname");
ClaimActions.MapCustomJson(ClaimTypes.Email,
user => user.Value<string>("mail") ?? user.Value<string>("userPrincipalName"));
The support from the latest version of .Net Core suggests to me that this external login API still works. I haven't tested them out yet, I will update if I get to do this login integration.
Simply use "Live Connect" via Oauth 2.0:
http://msdn.microsoft.com/en-us/library/live/hh243647.aspx
or
https://dev.onedrive.com/
In our company, we have a project which should use Novell eDirectory with .net applications.
I have tried Novell Api (http://www.novell.com/coolsolutions/feature/11204.html) to connect between .NET applications. It is working fine.
But, as per requirement, we specifically need .net API to connect not with Novell Api, which is not working. Connection and binding with .NET Api DirectoryServices not working.
Our Novell eDirectory is installed with following credentials:
IP address: 10.0.x.xx(witsxxx.companyname.com)
Tree : SXXXX
New Tree Context: WIxxxK01-NDS.OU=STATE.O=ORG
ADMIN Context is: ou=STATE,o=ORG
admin : admin
password: admin
I used Novell Api and used following code
String ldapHost ="10.0.x.xx";
String loginDN = "cn=admin,cn=WIxxxK01-NDS,OU=STATE,o=ORG";
String password = string.Empty;
String searchBase = "o=ORG";
String searchFilter = "(objectclass=*)";
Novell.Directory.Ldap.LdapConnection lc = new Novell.Directory.Ldap.LdapConnection();
try
{
// connect to the server
lc.Connect(ldapHost, LdapPort);
// bind to the server
lc.Bind(LdapVersion, loginDN, password);
}
This is binding correctly and searching can be done.
Now my issue is with when I trying to use .NET APi and to use System.DirectoryServices
or System.DirectoryServices.Protocols, it is not connecting or binding.
I can't even test the following DirectoryEntry.Exists method. It is going to exception.
string myADSPath = "LDAP://10.0.x.xx:636/OU=STATE,O=ORG";
// Determine whether the given path is correct for the DirectoryEntry.
if (DirectoryEntry.Exists(myADSPath))
{
Console.WriteLine("The path {0} is valid",myADSPath);
}
else
{
Console.WriteLine("The path {0} is invalid",myADSPath);
}
It is saying Server is not operational or Local error occurred etc. I don't know what is happening with directory path.
I tried
DirectoryEntry de = new DirectoryEntry("LDAP://10.0.x.xx:636/O=ORG,DC=witsxxx,DC=companyname,DC=com", "cn=admin,cn=WIxxxK01-NDS,o=ORG", "admin");
DirectorySearcher ds = new DirectorySearcher(de, "&(objectClass=user)");
var test = ds.FindAll();
All are going to exceptions.
Could you please help me to solve this? How should be the userDN for DirectoryEntry?
I used System.DirectoryServices.Protocols.LdapConnection too with LdapDirectoryIdentifier and System.Net.NetworkCredential but no result. Only same exceptions.
I appreciate your valuable time and help.
Thanks,
Binu
To diagnose your LDAP connection error, get access to the eDirectory server from the admins, and use iMonitor (serverIP:8028/nds and select Dstrace), in Dstrace clear all tabs and enable LDAP tracing, then do your bind see what happens on the LDAP side to see if there is a more descriptive error there. Or if you even get far enough to bind and make a connection.
Is it possible to pass the credentials of the user browsing my asp.net web application to the EWS FindAppointments call?
I'm only trying to return calendar details for the active browsing user, who will without doubt have permission to read their own calendar, so the issue should not relate to Exchange impersonation with the EWS api discussed here.
The code below works just fine when running localhost, but running from the web server, despite Windows Authentication and Identity Impersonation being configured it throws an access denied error.
using (HostingEnvironment.Impersonate())
{
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
service.UseDefaultCredentials = true;
service.AutodiscoverUrl(UserEmailAddress);
Mailbox mb = new Mailbox(UserEmailAddress);
FolderId cfCalendarFolderID = new FolderId(WellKnownFolderName.Calendar, mb);
CalendarView cvCalendarView = new CalendarView(DateTime.Now, DateTime.Now.AddDays(30), 1000);
cvCalendarView.MaxItemsReturned = 3;
Perhaps I'm missing a simple way to pass the HostingEnvironment credentials to my ExchangeService object?
Is there a way to check what the service.UseDefaultCredentials are?
I'm not able to use the following as there isn't a way to get the password from the windows authenticated impersonated user.
service.Credentials = new System.Net.NetworkCredential(username, password, domain);
I've also tried the following, but get the same ServiceResponseException access denied errot.
service.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
service.PreAuthenticate = true;
Thanks in advance of your kind assistance.
Additional info which may or may not be relevant:
The Application Pool Identity for the website is NetworkService.
The UserEmailAddress variable is set from an AD lookup based on System.Security.Principal.WindowsIdentity.GetCurrent().Name
EDIT (14th Aug 2012)
To achieve what I'd like to do above, I believe the HostingEnvironment.Impersonate isn't required.
Instead I need to use the ExchangeService's ImpersonatedUserId property.
More details on that here
Only problem though is we're running Exchange 2007 and the power shell command for enabling a service account to impersonate all users (that you would use pass in to the .Credentials parameter) only appears to be compatible with Exchange 2010.
You should try using WebCredentials instead of NetworkCredential - see related SO post. There seems to be an issue with EWS and AutoDiscover + NetworkCredentials
I have a web application in a separate server than Active Directory and I want to change a user password. The code is the next:
string newPassword = Membership.GeneratePassword(int.Parse(WebConfigurationManager.AppSettings["passLenght"]),
int.Parse(WebConfigurationManager.AppSettings["passNonAlpha"]));
DirectoryEntry de = new DirectoryEntry(WebConfigurationManager.ConnectionStrings["ADConnString"].ConnectionString,
WebConfigurationManager.AppSettings["ADAdmin"], WebConfigurationManager.AppSettings["ADAdminPass"]);
DirectorySearcher deSearch = new DirectorySearcher(de);
deSearch.Filter = "(&(objectClass=user) (userPrincipalName=" + name + "))";
SearchResultCollection results = deSearch.FindAll();
if (results.Count == 1)
{
foreach (SearchResult OneSearchResult in results)
{
DirectoryEntry AlterUser = OneSearchResult.GetDirectoryEntry();
AlterUser.AuthenticationType = AuthenticationTypes.Secure;
AlterUser.Invoke("SetPassword", newPassword);
AlterUser.CommitChanges();
AlterUser.Close();
}
}
When I run this in my development environment (where Active Directory and the web application are on the same server) it is working. But when I try to run it in the production environment I am having the next error:
Exception has been thrown by the target of an invocation
What am I missing?
Thanks.
EDIT:
I could go deep in the exception error and I get this:
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Permissions are the issue. The account under which your ASP.NET code is running doesn't have the permission to set the account password.
Either:
Run the AppPool under a user that has the required permissions, or
Use impersonation to elevate the permissions for the SetPassword call
The reason it is working in your dev environment/failing in production is likely due to a combination of:
You are running the app under the Visual Studio development web server that runs under your user account, which has the necessary permissions. Running it under "real" IIS will run it under a less privileged account.
In the live environment there's another machine hop from the web server to the AD server, and the credentials don't get passed along. The web server needs to have network credentials (either as part of the AppPool identity, or a call to LogonUser) in order to authenticate to AD.
The code looks correct. This could be happening because the password your sending though Active Directory does not meet the minimum requirements. Trying using a more complex password such as "M2k3ThisWork!"
If you want to change the password of AD then you use this
AlterUser.Invoke("ChangePassword", OldPassword, newPassword);
I'm a Sharepoint/MS Developer and not too familiar with Livelink. Anyways, I see they have a .NET WCF Service. I'm attempting to do Authentication using this web service and as far as I can read from the API docs, It shouldn't be too difficult.
According to the docs, I need to auth initially with a Admin user which I do and this works fine. Then I can impersonate using the currently logged on user.
Everything works fine until I get to the ImpersonateUser part which fails with a very generic "Insufficient permissions to perform this action." error. Is this a issue on the client side? or LL side? Possible Kerberos not setup propely or at all?
Herwith the code:
private string ImpersonateUser(string adminToken)
{
string userToken = string.Empty;
llAuthentication.OTAuthentication fLLAuthentication = new llAuthentication.OTAuthentication();
fLLAuthentication.AuthenticationToken = adminToken;
fAuthServiceUser = new AuthenticationClient();
fAuthServiceUser.Endpoint.Address = new EndpointAddress(this.ServiceRoot + "Authentication.svc");
fAuthServiceUser.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;
userToken = fAuthServiceUser.ImpersonateUser(fLLAuthentication, WindowsIdentity.GetCurrent().Name.ToString());
return userToken;
}
This has nothing to do with Windows authentication. It just means the livelink user you're initially using to login with does not have the right to impersonate other livelink users. Ask your livelink admin to grant this right (I dno't know the exact right off-hand, sorry)