some background:
cifs tried to connect to a XP box, which was joined to a domain.
smbclient (and Mac) were working - cifs not.
On that XP box GPOs (or others) were set in that way, that _only_
NTLMSSP connections were allowed at all.
During the "negotiate protocol" request, cifs does _not_ set the
"extended security negotiation" bit in flags2.
in cifs terms: #define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
Cifs supports that - but does not offer that capability to the server.
So the XP server did response to _not_ support extended security in
the capabilities field...
Cifs tried default ntlm - and failed to connect.
Any mount options regarding "sec=....." don't help here!
So shouldn't cifs _always_ set the "extended security negotiation" bit in flags2
during negprot (to get proper server caps)?
Atm one can workaround with:
echo 0x80080 > /proc/fs/cifs/SecurityFlags or
echo 0x80 > /proc/fs/cifs/SecurityFlags
to force NTLMSSP.
Cheers, Günter
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