Validating A Username Against Active Directory Without Using Directory Services?
May 15, 2012
Is it possible (I'm sure it is) to validate a user's credentials against Active Directory without using Directory Services?I'm building a Browser-Based WPF application which requires users to login to and get validated via Active Directory. Since .Net 4.0 (or maybe 3.5) accessing Directory Services from an Application requires the application to be fully trusted. Since IE won't provide full trust to an application if it doesn't have the signing certificate in it's cert store, the application is refused startup permission.
If I don't use Directory Services, then I can leave the application as Partial Trust and validate my user's credentials without having to install a certificate on each user's machine.
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Apr 18, 2011
I am trying to create a new user and set their password in AD LDS using asp.net vb. I'm binding to an instance of a directory entry, which is working fine. And I can add a user without a problem. The problem is that I can't seem to set the password when I add the user.Is this the right way to set the password
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Sep 1, 2009
I'm trying to validate signons against Active Directory. When I execute my function from my Computer at home that is VPN'd to my office, it works fine. When I execute the exact same code on my machine at the office, I get the following error: "The server is not operational"My code is as follows:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim strDomain As String = "MyPDC"
[code]....
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Jan 20, 2011
Currently, users log into a web application with their AD (active directory) credentials which are validated against the AD. Once inside the application, certain users will need to update the AD. When I hardcode a username/password, I am able to update the AD, however when I try to force the object to use the logon credentials or if I don't specify the username/password, it throws an error. Obviously due to security concerns, I do not want to hardcode credentials.
Error - System.DirectoryServices.DirectoryServicesCOMException: An operations error occurred.
Public Shared Sub SetProperty(ByVal de As DirectoryEntry, ByVal propName As String, ByVal propValue As String)
If Not propValue Is Nothing Then
[Code].....
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Jun 10, 2010
Here is the final code that worked for me. This uses WNetAddConnection2 to establish a connection first, before using DirectoryEntry.
Imports System.Runtime.InteropServices
Imports System.Net
Imports System.DirectoryServices
Imports System.IO
[Code]...
So I moved the code to an ASP.Net web app, which is impersonating a service account through the Impersonate section of web.config. The account I am impersonating does not have admin rights on any of the workstations so I put in a username/password into the constructor for the computer entry like so:
Dim deComputer As New DirectoryEntry("WinNT://" + Computername + ",computer", username, password).The username is that of a domain account which has local admin rights on every workstation. If I look at the Username property of the resulting deComputer object I can see that the username matches what I entered.Also if I enter in an invalid password it throws an error, so it is authenticating in some fashion.
However if I now try and add or remove a user from a remote workstation I get a general access denied error. If I add the service account that ASP.Net is using as a local admin on that workstation it will add and remove no problem.So next I tried using the LogonAPI (advapi32.dll ->LogonUser call) to login as the user account that is a local admin on all workstations, impersonated the resulting WindowsIdentitiy and tried running just the original deComputer instantiation. When I do this every property, excepty Path, returns an OLE exception..
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May 9, 2006
I'm a developer for a College we have an active directory.I need to query Active Directory with the Pc name and return it's path in the Active Directory tree.
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Feb 24, 2011
Code:
Imports System.DirectoryServices
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ChangePassword("mydomain.local", "MyUsername", "ValidTestedCurrentPassword", "IAmNew Password!123")
End Sub
[code]....
I am using the above code to allow a user to change the AD password via an application, this is just a sample of the problem code.The error it is generating is that the password is not complex enough, and it does not matter what I put in the new password, it always reports "The password does not meet the password policy requirements. Check the minimum password length, password complexity and password history requirements. (Exception from HRESULT: 0x800708C5)" I have tried it as user@domain domainuser I have then tested on one of the domain computers the same password and it changed there without issue.So I can only assume the error message is incorrect.I have tried several combination's of samples on line and they all seem to point back to this as the proper method, I feel certain I am overlooking something.
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May 15, 2012
I was wondering i have a try block setup but need to catch an object exists error so I can continue in my code and ignore that user because she/he exists already in another ou.Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. - "Sherlock holmes" "speak softly and carry a big stick" - theodore roosevelt. Fear leads to anger, anger leads to hate, hate leads to[url]...
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Jul 1, 2009
How can I get a list of computers and their properties from Active Directory using VB.Net and Visual Studio 2008?
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Sep 22, 2010
how to use directory services for listing the members of the local administrators group on a remote pc in the following format?
[Code]...
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Mar 25, 2011
I having a program built in VB.Net and would like to take in the users windows name and then compatre that with a security group in AD, if they are in a certain group then redirect them to the next page otherwise block them.I have tried many ways using many different snippets of code from different forums, but cannot find a code piece of code that works?
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Feb 15, 2007
I would like to have all properties on a user from active directory. I find some property name as :
distinguishedName, SAMAccountName, sn, givenName, TelephoneNumber, mail
If you have a list of property? As each user has an ID in AD ?
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Jun 17, 2008
I'm having a weird problem with active directory and the display name attribute. I can create an AD account with no problems, the account shows up, I can log on as the account, everything appears to be working as intended. The problem is, our company requires that the display name be in the form of "Lastname, Firstname". Thats all fine and dandy when you create an AD account use the MMC snap-in, you type in the users name as "Lastname, Firstname" in the display name field and when the account is created, the display name shows as "Lastname, Firstname" as you would expect.
The problem I am having is this, whenever I create an AD account programmatically, I can't for the life of me get the display name to show up as "Lastname, Firstname". The displayname property is set as such, checking the AD account using the MMC snap-in shows the display name is set correctly, but when looking at the list of user accounts, the account is always displayed as the users username. The account name I am using is "Test User", see pic below.
if you try to rename the account, the field it tells you it is editing is called Full Name? I can't find a property in AD even called Full Name so I am completely confused, here is a picture of me trying to rename the programmatically created account, as you can see, the display name field is set correctly even though it doesn't display that way. And of course, after renaming the account as seen below, the display name shows up correctly as "Lastname, Firstname"Here is the code I use to create the account, just for reference.
Public Sub CreateActiveDirectoryAccount(ByVal sUserName As String, ByVal sFirstName As String, _
ByVal sLastName As String, ByVal sUserPrincipalName As String, ByVal sPassword As String, _
ByVal sHomeDrive As String, ByVal sHomeDirLocation As String, _
[code]....
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May 24, 2009
i would like to be able to login on a webpage using a valid active directory username and password.user name and password are entered in textboxes. if they are correct then i would like to redirect to another page.how can this be coded.in a second task after some code is performed, log in as an administrator using code and unlock the account.i have heard that this is called impersonation. how can i perform the above?i'm using visual web developer 2008 and vb.net
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Jan 11, 2011
Im trying to connect to AD and carry out some basic tasks for a .Net application written in VB .Net. I would like to create the application so when it loads, it automatically binds to the default AD domain that the user is logged onto. This has led me to writing the code
Dim domain As DirectoryEntry = New DirectoryEntry("LDAP://DC=domain,DC=com", Nothing, Nothing, AuthenticationTypes.Secure)
domain.RefreshCache()
But this doesnt work.
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Mar 16, 2011
i am trying to get a list of all users in the active directory on a domain. The following code is being used but doesnt seem to work:
Public Function GetAllUsers(ByVal ldapServerName As String) As Hashtable
'To retrieve list of all LDAP users
'This function returns HashTable
[Code]....
Then i get the "find people" box pop up. So i know i have the correct LDAP but not sure why the other information is preventing it from working..
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Aug 19, 2011
I am having some issues with the following script for adding an object to AD - The object being a user and then modifying the properties on it.
Error
Line 350:
Line 351: Dim adUsers As DirectoryEntries = dirEntry.Children
Line 352: Dim newUser As DirectoryEntry = adUsers.Add("CN=" & sUserName, "user")
Line 353:
Line 354: newUser.Properties("givenname").Add(sFirstName)
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details:
System.Runtime.InteropServices.COMException: Unknown error (0x80005000)
End of Error
Partial class Add
Me.CreateAdAccount(uname.Text, pword.Text, fname.Text, sname.Text, Nothing)
Public Sub CreateAdAccount(ByVal sUserName As String, _
ByVal sPassword As String, _
ByVal sFirstName As String, ByVal sLastName As String, _
[Code] .....
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Mar 10, 2011
I am trying to create a new user and set their password in AD LDS using asp.net vb. I'm binding to an instance of a directory entry, which is working fine. And I can add a user without a problem. The problem is that I can't seem to set the password when I add the user. Is this the right way to set the password?
Dim objADAM As DirectoryEntry = BindToInstance()
Dim objUser As DirectoryEntry = objADAM.Children.Add("CN=Jimmy", "User")
objUser.Properties("sn").Value = "lloyd"
objUser.Properties("givenName").Value = "Jimmy Smith"
objUser.Properties("userpassword").Value = "THEPASSWORD"
objUser.CommitChanges()
This is the error that I get :
System.DirectoryServices.DirectoryServicesCOMException (0x80072020): An operations error occurred. (Exception from HRESULT: 0x80072020) at System.DirectoryServices.DirectoryEntry.CommitChanges
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Jan 12, 2012
I have a list of computers from the AD which also have IP addresses in one of the fields. The IP address does not seem to be accurate. It looks like the AD updates are not as frequent as the DHCP server.
MYCOMPUTER1 1.1.1.1
MYCOMPUTER2 2.2.2.2
MYCOMPUTER3 3.3.3.3
Is there anyway to get the IP address from VB soon after I retrieve the record from AD? Querying the DNS/DHCP server via code?
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Jan 9, 2009
I am trying to Join the domain using VB.NET 2005. I cannot see anything I am missing but am getting an error code that hasn't proven much use. I get a return error code of 1332.[code]
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Aug 16, 2011
Using VB.net im after a way of serching through active directory and returning the ou a computer is currently in.
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Nov 6, 2009
We are developing our application using MS Visual Studio 2008 VB .Net. We have to use Active Directory Server for authenticating the user logging into the application. Does any one has code samples intergrating .Net and ADS?
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Oct 21, 2011
We are cunrretly developing a solution for compact framework and windows mobile 6.5. The idea is that the user have to login using custom login for on the phone before they can do anything else. Our backend is WCF, and here we have planned to implement an interface based solution where the customer can select between a variety of "AuthenticationSources" one including Active Directory.Is there any clever way to do this using built in .NET functionality, or do I still have to do it the old fashion way like:
1) Write domain, user and password in the windows mobile login form.
2) send this info using http webservice to the wcf server, where the server check for this device, which is the preferred login source. If it is ad, it will load the ADauthenticator class, peform a LDAP query against the ad selected, and simply return true or false if user passed or not, then the webservice return tru/false to the device.
3) If the return answer is true, the device will store an encrypted registry key on the device indicating to the device client that the user is logged on.
4) If the user select logout, or if the device is restarted, or loses power, the registry key is cleared on boot.is this a good enough solution? The devices are NOT considered to be members of the actual domain. And this solution should handle a solution with a database source for logins.
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Aug 6, 2010
I am trying to create a VB.NET application which will (hopefully) reduce some time spent on some of my departments helpdesk calls. The part that I am stuck with is how to use VB.NET to remove a user from a group. The following is code that I have been playing with:
[Code]....
I am coding in .NET 2.0 as I am unsure if the server it will live on will have 3.5 installed.
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Mar 20, 2012
I'm writing code to connect to my Active Directory server using LDAP. I can connect usingLDAP://celtestdomdc1.celtestdom.localbut I can't connect usingLDAP://celtestdomdc1.celtestdom.local/CN=Users;DC=celtestd
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Oct 6, 2011
I needed to set the accountExpires property in the AD DirectoryEntry couldn't find a simple answer.Found some information;
[Code]...
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Jun 21, 2010
is there anyway to retrieve and list all the attributes for an active directory user to be used for updating with using the following
de.properties.contains(propertyName)
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May 26, 2010
I'm currently making my first program, its an active directory clean up tool. Right now I'm having diffculty getting it to search sub OUs that it sees, I can get it to look at one layer of the sub OUs. I just want more of a dynamic code so I don't have to keep repeating it like I did do. Also I'm not sure that I'm looking through active directory the best way.
[Code]...
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May 6, 2010
How do I find the description for a computer in ActiveDirectory?
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Nov 15, 2011
Below is code to delete a user off a AD in another domain, there is a full trust and the user being assigned to the Directory Entry has full rights to the AD it is accessing:
Try
Dim objUserDE As New DirectoryEntry
objUserDE.Path = "LDAP://CN=" + UserCN + "," + OrgU + "DC=DOMAIN,DC=LOCAL"
[Code].....
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