Fwd: [PATCH] cifs: Fix broken sec=ntlmv2/i sec mount option for Samba server

Christopher R. Hertel crh at samba.org
Tue Aug 23 22:34:55 MDT 2011

The official explanation of what actually goes in those blobs and how the
information is handled wasn't available until roughly 2 years ago, and it's
buried in dense verbiage.  My guess is that no one has had time nor cause to
review NTLMv2 blob handling--which is now somewhat outdated--since the
documentation finally became available.

Note also that Microsoft uses very different terminology than we do.  I
think most of the names we use are from the work Eric Glass did as part of
Davenport (which is still cited as expert information).

Microsoft (Obaid) has posted two blog entries, the first of which is a
mapping from Eric's :


Jeremy Allison wrote:
> On Tue, Aug 23, 2011 at 08:41:12PM -0500, Steve French wrote:
>> Wonder why we had the time in that field if Samba doesn't accept it
>> but Windows does - is this a server bug?
> Maybe - can you send a debug level 10 log when the server
> fails to accept your blob so we can see why ?
> Thanks,
> Jeremy.

"Implementing CIFS - the Common Internet FileSystem" ISBN: 013047116X
Samba Team -- http://www.samba.org/     -)-----   Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/   -)-----   ubiqx development, uninq.
ubiqx Team -- http://www.ubiqx.org/     -)-----   crh at ubiqx.mn.org
OnLineBook -- http://ubiqx.org/cifs/    -)-----   crh at ubiqx.org

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