LDAP Username Password Authentication?
Aug 5, 2009
I have 2 questions here.
1. I would like to know how the attributes of an object in LDAP can be fetched using vb.net
eg here i want to get the properties of user with id saechira.[URL]..
2. I have to perform the authentication of username and password using our LDAP server. I have tried to use the below code. When I try to execute this code it say "Logon Failure: Unknown user name or bad password". Is it because of any invalid parameters, can anyone Please let me know why the authentication fails.. The username password and the domain are all correct. why does this error occur.
[Code]...
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May 17, 2012
I need to authenticate a user against LDAP/AD (windows 2008 r2) so I can leverage the domains password rules etc... I found code that will allow me to validate a users ID and Password entered into a form (using System.DirectoryServices.DirectoryEntry) but my problem is if the user enters an invalid password more that AD is configured to allow, the account gets locked out. Is there anyway around this?
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Mar 23, 2011
I would really welcome some help with this issue. We have a php code that works and connects to the LDAP. When I try to connect using VB.NET 2010, it fails to bind with logon failure unknown username or bad password. Below is the connection information. When I talk to the folks who run the ldap server, they say I am binding sucessfully, below is the log file for the sucessful bind? If I continue and try to execute a search I don't get any results. The server is running openLDAP ver 2.3.39 on a linux server, server requires connection on port 636 for secure connection, or 389 for anonymous.
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Nov 14, 2011
I can access the current Windows user, but I want to give an admin the ability to enter an alternate username and password for a different Windows Active Directory Account without having to logoff and log back in. Once the account is authenticated, I need to use it in a connection string to sql server. I know I could do this for a SQL Server login, but this is Windows Authentication only. It was installed with ClickOnce. Is there an .exe file on the user's machine?
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Jul 30, 2011
Where is a good VB.NET tutorial where I can have a username box and a password box and it checks in the database if it's there and if it is then another form will show?
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Aug 6, 2009
I'm trying to make an authentication before my visual basic 2008 project, a login window. You have to login using your vBulletin username & password. The username and password from my community, which is a vBulletin forum. So, I'd like a form that ask you to login using your username and password from my vBulletin forum, so you'd have to register before...
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Jun 21, 2010
send a solution for this "update login SET password=@password,username=@username where username=@user"
while executing i got the error"syntax error in update statement "
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Sep 12, 2006
I have a LDAP Server ("Test.dir.svc.mytest.com") and i want to check if an user with UID a PWD is certified. How to do it?
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May 15, 2012
I am trying to set up a new internal system for my client currently, they insisted on integrating the login with AD, which makes sense, and i have managed that with no problem. However what i also want to do, after authentication, is to store some user details / attributes as session variables. I have the following code to aithenticate the user:
'this function authenticates against AD - very simple and works nicely.
Function AuthenticateUser(path As String, user As String, pass As String) As Boolean
Dim de As New DirectoryEntry(path, user, pass, AuthenticationTypes.Secure)
[code]....
which works nicely, and once the function returns me a True, i set Session("LoggedIn") as True.what i need to do is (hopefully within the above function) save the user's name, and 2 other custom atributes from within the user's AD profile.How would i access those (hypothetically)
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May 15, 2009
LDAP check dir exists when authentication is none Experts I am try to check if an LDAP path exists and the following code works fine if the AuthenticationType is not none. How do you check this if the LDAP does not use authentication?
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Apr 26, 2010
In an application I'm working on I am using the Environment.UserName Property to get the logged on user's username. Is there a way to convert this to the logged on user's REAL first name and last name that is associated with it in Active Directory? I'd like to avoid having to connect or query Active Directory directly if possible (as this is a corporate domain). I also wanted to avoid hard-coding lookups into the app itself, as the users of the application will change over time. Would a "users" external file (Text, XML, csv) be better for this?
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Jul 6, 2010
Our company is developing software projects that use a users windows username/password for program authentication. Our programs encrypt the username /password, send them to a web service. The web service decrypts the username/password and authenticates the user against our LDAP using the System.DirectoryServices namespace. This works well. There are two methods, one that validates the user and passes back the user's LDAP info in a datatable, the other passes back a boolean that indicates the user is on the domain. This is working just fine. Over the 4th of July weekend, our domain server hung. While it slowed down the login process for windows while it re-routed to a secondary domain server across the country, all our programs could not validate the users because our local domain controller was down.So I have been asked to update the web services to include a list of domain controllers that can be used if the local one is not available. Below is a snippet of code I use to validate a user:
[code]...
The getinfo function uses the directory services to create an LDAP entry, then do a search based on the account name (windows username) and populates properties for common LDAP information. How can I extend this function, or re-write it, to run down a list of domain controllers found on the network to validate a username? I was thinking of putting the domain in a database, but that requires administration as they change. Is there a way to cycle through the local domain controllers listed on the machine?
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Mar 11, 2009
I have a WinForms app with SQL05 backend. It has a standard Login window where users are required to supply a username/password. This is validated using my own code and sprocs. Now one of my big clients has scared the bejezus out of me by saying, "Hey Chris, I want you to change your app in line with all our other IT systems so that users can use their common username and passwords with authentication against LDAP". :confused: Having had a moment to reflect, I have some questions (some very noob in nature!)
1. Is this requirement a big deal? :) Or straightforward to implement?
2. Does this mean that when user's double-click my app icon on the desktop, the authentication automagically happens without the need for a Login screen?
3. How on earth can I test this. My dev environment does not use AD, but I do have SBS2003
4. Can anyone point me to good resources about this on the web?
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Jul 15, 2009
I am looking to create a simple password box that will ask the user for a username and pass, if the user is validated against the usernames and passwords in an .ini file the login box will close and launch a program also stated in the .ini file. I would also like to be able to launch different programs for different users.
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Feb 28, 2012
On the server, I get my current logged-in username, but from a remote client I get server name/administrator.
Below is the code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'Grab username from Windows Authentication, remove the 'HHI', and assign to empName
'empname = Replace(HttpContext.Current.User.Identity.Name.ToUpper, "HHI", "")
'empname = Replace(Page.User.Identity.Name, "HHI", "")
[code]....
I've tried Application Pools with 'Network Service', with Named Accounts and setting the pipeline mode to 'Integrated' and 'Classic'. The above code works properly in Server 2003/IIS6, but I haven't been able to make it work on Windows Server 2008R2/IIS 7.5.
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Mar 26, 2009
Long story short I have a situation where some users have access to two domains that do not trust each other. They log into one domain and their user ID's are identical on the other domain. So when they change their password on the first domain they need to call into tech support to have it reset on the second domain. I'm writing a app that checks if they have access to the first domain but not the second and if this is found to be true it prompts them for the new password to update the second domain.
Here is where I am stuck. The following code works GREAT but I need it to be more flexible:
Code:
Friend Function ResetPassword(ByVal OldPassword As String, ByVal NewPassword As String, ByVal UserName As String) As String
' Resets a users domain password
[Code]....
The issue is the CN is different between domains (one is first name last, other is last name first) so I need to search by UserID which is the same between the two. So I tried searching by sAMAccountName but it says object not found. Also I need to be able to search the entire Super Corp OU. When I get rid of the extra OU's the search also fails
So I need to search LDAP for sAMAccountName anywhere in OU=Super Corp. How can I do this? Every combination I try seems to fail yet if I hard code it like the above example it works great. The idea is to replace CN=John Q. Public with sAMAccountName=" & username & " to pull jsut that user on the fly.
If it matters all clients are XP SP2 or higher, both domains are Server 2003 or higher. VB 2008 SP1. The error message when a different search is done is a "Object not found".
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Apr 21, 2011
I'm working on a web based "Forgot Password" to reset AD passwords, using LDAP. Well, I can unlock the user, but not change the password.
Here is my function :
Private Function ChangeLocalUserPassword(ByVal User As String, ByVal Pass As String) As Boolean
Dim pinger As New Net.NetworkInformation.Ping
Dim usr As DirectoryEntry
_de = GetDirectoryEntry()
If _de Is Nothing Then
[Code] .....
How I can get around hard coding the Admin user on the page? Would creating an IUSR with a few Admin privileges work?
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Feb 26, 2010
I am currently developing an application in VB.net that opens up a web document via Web Browser Control, parses the HTML, and sends back the data I need. This is not a problem.However, one of the sites requires basic authorization to access. I know the following code will workThe dialog box will come up with in the User Name box, but the window focus will be on the password box.
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Aug 3, 2011
get user's password with windows authentication
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Apr 17, 2009
I am writing a program that accepts a user name and password (the password must show up as *s). The user gets three tries to enter the correct information before the program is closed. So far I have the password showing up as the password in clear text the first time and in *s the next two times. The authentication also fails even when I use the correct user name and password which are password and user for now.
Public Class frmPassword
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
Static intCounter As Integer = 0
intCounter = intCounter + 1
[code].....
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Oct 19, 2011
I have managed to successfully connect remotely to the MySQL database for my Joomla! 1.5 website using MySqlConnector in Visual Basic .NET 2010. Now I am trying to authenticate a user's password from values submitted in a simple form to those retrieved from a MySQL query.
I found a useful thread on forums.joomla.org titled "Joomla password MD5 & VB.NET MD5", but the code snippets there produce the incorrect hash.Here is another useful Joomla Forums thread as to how passwords are encrypted (using MD5 hash and "salt") in the Joomla DB.
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Mar 17, 2010
FIRST START WITH LOGIN FORM
Public Class LoginForm1
' TODO: Insert code to perform custom authentication using the provided username and password
' (See http://go.microsoft.com/fwlink/?LinkId=35339).
[CODE]...
HOW SHOULD I ASSIGN USERNAME AND PASSWORD
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Sep 24, 2011
While a web page -which needs login- is opened in my browser, if I close browser and re-open, I have to write username password again. But, sometimes when I close browser and re-open for the same page, it isn't needed username and password again? Is it about Session, Cookie? If yes, why are there different conditions?
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Nov 24, 2010
1. i need to connect to a active Directory through different credentials. I want to have two textboxes like Username and Password. The User should provide these two information + the domainname and i connect then to the ad
2. How to check if the connection was successfull?
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Mar 8, 2012
I'm making a program that requires FTP access. I need to encrypt the password/username so no one will be able to decompile it and gain access to my FTP account.
how to encrypt strings? I've gone through google, but I'm not looking for a 5 page essay.
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Nov 5, 2010
i am trying to do a for loop to give the user 3 trys to get the login username and password right. the username is User and the Password is VB. the code i got so far is a if function Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code]...
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May 20, 2009
How do i set username and password, and how do i make a function that makes it aviable to change the password and the username from the program??
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Mar 17, 2010
i have a problem when adding username in my registration form..registering same username is allowed in my program..i dont want to allowed this. How can i make it using SQL..if the username exist dialog box will appear that the username exist
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Aug 19, 2009
the below code is the login form. If type wrong username and password, MsgBog will pop up. So, my question is how to reset the password and username after the wrong username and password. I try to put Me.ResetText() but still can nt function because the old usename and password still remain at there.
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Dec 15, 2011
I have been coding a Reset Login Details form, the user needs to enter the new Username, the new Password and the Current Password.Here is my code below - something in the form is not working as i am getting an error when i fill in the form about the INSERT INTO statement.
Imports System.Data.OleDb
Public Class frmChangeLoginDetails
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
[code].....
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