Access Directory Services from a non domain-joined computer? RSS

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  M.R.

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  Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 07:23 PM|LINK

  Hello,

  I have the following simple code that works perfectly from an AD-joined computer:

  Dim sName As String = sUserID

  Dim oRoot As DirectoryEntry = New DirectoryEntry

  Dim oSearcher As DirectorySearcher = New DirectorySearcher

  Dim oResults As SearchResultCollection

   

  oRoot.Path = "LDAP://OU=Users,OU=Hgies,DC=rci,DC=youit,DC=ca"

  oSearcher.SearchRoot = oRoot

  oSearcher.Filter = "(&(objectclass=User)(objectCategory=person)(sAMAccountName=" & sName & "))"

  oResults = oSearcher.FindAll()      -----------      error here if ran from a non-AD joined computer

   

  However, when I run it from a non-AD computer I experience the following error on the last line (in bold):

   

  The specified domain either does not exist or could not be contacted.

   

  I tried to include credentials, something like:

  oRoot.Username = "domain\username"

  oRoot.Password = "******"

   

  but it does not make any difference…

  Please advise,

  Regards,

  M.R.

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  N_EvilScott

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 07:37 PM|LINK

  Specify the Username and Password on the DirectoryEntry object before trying to access it with the Searcher. Please consult the link below for detailed information from MSDN on how the credential process works.

  http://msdn.microsoft.com/en-us/library/system.directoryservices.directoryentry.username.aspx

  Scott was here...
  • Edited by N_EvilScott on Feb 16, 2012 07:37 PM
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  M.R.

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:08 PM|LINK

  Thank you for the link Scott. 

  • Edited by M.R. on Feb 16, 2012 08:09 PM
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  N_EvilScott

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:12 PM|LINK

  You need to pass in the Entry as an overload for the Searcher:

  DirectoryEntry oRoot = new DirectoryEntry();
  oRoot.Username = "domain\username";
  oRoot.Password = "password";
  oRoot.Path = "LDAP://OU=Users,OU=Feiy,DC=rci,DC=Oigj,DC=ca"
  
  DirectorySearcher oSearcher = new DirectorySearcher(oRoot);
  oSearcher.Filter = "your filter here";
  
  oResults = oSearcher.FindAll();

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  M.R.

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:31 PM|LINK

  Thank you very much Scott for your detailed answer. I revised my code as directed and tested it an an AD-joined computer (worked fine):

  Dim oRoot As DirectoryEntry = New DirectoryEntry
  Dim oResults As SearchResultCollection

  oRoot.Username = "domain\username"
  oRoot.Password = "*****"
  oRoot.Path = "LDAP://OU=Users,OU=FeiY,DC=rci,DC=Oigj,DC=ca"

  Dim oSearcher As DirectorySearcher = New DirectorySearcher(oRoot)

  oSearcher.Filter = "(&(objectclass=User)(objectCategory=person)(sAMAccountName=" & sName & "))"

  oResults = oSearcher.FindAll()   ---  still experiencing an error on non-AD joined computer

  Unfortunately I am having the same error when ran it from the non-AD computer...(The specified domain either does not exist or could not be contacted)

  Regards,

  M.R.

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  N_EvilScott

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:32 PM|LINK

  It sounds like your having a problem with LDAP instead of authentication. Have you tested accessing LDAP manually to see if your port is being blocked or something else?

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  M.R.

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:33 PM|LINK

  I must also mention that the non-AD computer is a Windows Server 2008 R2 and I am developing in VS 2010 (an ASP.Net application)

  Thanks,

  M.R.

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  M.R.

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:34 PM|LINK

  Not yet but this is very good ideea.

  thanks,

  M.R.

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  N_EvilScott

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:34 PM|LINK

  Are you on the same network? Or are you accessing it through a VPN or some other means?

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  M.R.

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  Re: Access Directory Services from a non domain-joined computer?

  Feb 16, 2012 08:36 PM|LINK

  Yes I am on the same network, I can browse computers and access shared folders.