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Problems! WinNT Client -> WinXP Web Server -> Win2000 File Server - ASP.NET Security

Hi everyone, I have an WinXP Server and an ASP.NET application that access files in a third machine, Win2000 Server. I am using Windows authentication, impersonating the user and it works fine when the client is WinXP as well. But it doesn't works when the client is a NT machine. I previously had a problem in accessing this files on the server but i solved turned on the delegation for the Web server machine. But now, with the NT client it seems I am having the same problem I had before, without the delegation settings. Help me. Thank you very ...

  1. #1

    Default Problems! WinNT Client -> WinXP Web Server -> Win2000 File Server

    Hi everyone,

    I have an WinXP Server and an ASP.NET application that access files in a
    third machine, Win2000 Server. I am using Windows authentication,
    impersonating the user and it works fine when the client is WinXP as well.
    But it doesn't works when the client is a NT machine.

    I previously had a problem in accessing this files on the server but i
    solved turned on the delegation for the Web server machine.

    But now, with the NT client it seems I am having the same problem I had
    before, without the delegation settings.

    Help me.

    Thank you very much,

    Fabrício


    Fabricio Sperandio Guest

  2. #2

    Default Re: Problems! WinNT Client -> WinXP Web Server -> Win2000 File Server

    Windows NT does not support Kerberos Authentication by default. Only
    Kerberos is delegatable. Windows NT will use NTLM v2 by default, which you
    can't delegate in a Windows 2000 environment.

    If you have Windows 2003 Domain, then there is something call Protocol
    Transition, which means that the client can authenticate to the webserver
    using NTLM v2, or Digest etc, and IIS can get a Kerberos ticket to contact
    the remote server. But this is not possible in a Windows 2000 environment.

    Cheers
    Ken

    "Fabricio Sperandio" <fabriciomasonichomes.com.au.invalid> wrote in message
    news:Ob$ST02GEHA.2416TK2MSFTNGP12.phx.gbl...
    : Hi everyone,
    :
    : I have an WinXP Server and an ASP.NET application that access files in a
    : third machine, Win2000 Server. I am using Windows authentication,
    : impersonating the user and it works fine when the client is WinXP as well.
    : But it doesn't works when the client is a NT machine.
    :
    : I previously had a problem in accessing this files on the server but i
    : solved turned on the delegation for the Web server machine.
    :
    : But now, with the NT client it seems I am having the same problem I had
    : before, without the delegation settings.
    :
    : Help me.
    :
    : Thank you very much,
    :
    : Fabrício
    :
    :


    Ken Schaefer Guest

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