Re: Can't mount Windows DFS root using NTLMv2 (fwd)

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On Tue, Nov 30, 2010 at 7:35 AM, Robbert Kouprie <robbert@xxxxxx> wrote:
> Hi Shirish,
>
> Find attached some detailed problem info and pcaps on the different failing
> scenario's.
>
> Please note our setup is not standard, as we're using a BIND DNS server, and
> we have a mix of 3 DC's where only 2 are DFS root.
>
> Do note however that Windows clients do not have any problem with this
> setup.
>
> If I can be of more help/need to test something, please let me know.
>
> Thanks!
> --
> Robbert
>
> ---------- Forwarded message ----------
> Date: Tue, 30 Nov 2010 14:18:37 +0100 (CET)
> From: Robbert Kouprie <robbert@xxxxxx>
> To: Shirish Pargaonkar <shirishpargaonkar@xxxxxxxxx>
> Cc: linux-cifs@xxxxxxxxxxxxxxx
> Subject: Re: Can't mount Windows DFS root using NTLMv2
>
> Hi Shirish,
>
> On Mon, 29 Nov 2010, Shirish Pargaonkar wrote:
>
>> Robert, does sec=ntlmssp without  dom=sox helps?
>> A wireshark trace when you issue mount command would be useful.
>
> With or wihout dom=sox does not make a difference.
>
> Here is an overview of what I tested:
>
>                2003sp2         2008r2 (+DFS)   2008 (+DFS)
> NTLM            (1)             OK              OK
> NTLMv2          (1)             (2)             (2)
> NTLMSSP         (3)             (3)             (3)
>
>
> 1 = Fails with "Required key not available"
> 2 = Fails with "NT_STATUS_INVALID_PARAMETER"
> 3 = Fails with "NT_STATUS_NOT_SUPPORTED"
>
> I will send you some detailed logs and pcaps off-list.
>
> Regards,
> Robbert

This is strange wrt ntlmssp.  In negotiate protocol response, server
does state NTLMSSP as one of the mechanism types.
It must be related to bits in flag2 that that client sends in type 1 ntlmssp
session setup that server eitther expects from client but is missing or
does not support/like one of the flags2 bits.
Is 10.0.0.7 a box that runs cifs client?

ntlmv2 is not going to work as it is against Windows 2008, it will return
invalid parameter error.
Jeff Layton had pointed to this which you can try (I have not tried it yet)
 http://support.microsoft.com/kb/957441/en-us
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