[cifs-protocol] Where is account lockout and password expiry described in the docs?

Andrew Bartlett abartlet at samba.org
Wed Oct 30 14:44:07 MDT 2013


On Fri, 2013-10-25 at 11:53 +1300, Andrew Bartlett wrote:
> On Fri, 2013-10-25 at 10:50 +1300, Andrew Bartlett wrote:
> > On Fri, 2013-10-25 at 09:26 +1300, Andrew Bartlett wrote:
> > > On Thu, 2013-10-24 at 20:16 +0000, Sebastian Canevari wrote:
> > > > Hi Andrew,
> > > > 
> > > > Do you need further assistance from my end?
> > > 
> > > I do.  I was waiting on:
> > > 
> > > > > As soon as I have answers or questions I'll let you know.
> > > > 
> > > > Thanks.  Please also include the details for how this happens in Kerberos, not just for NTLM, as I strongly suspect the semantics have subtle differences, particularly in forwarding. 
> > > 
> > > There is still no clear document explaining how this is handled for
> > > Kerberos, and nothing that clearly describes how a NetLogon SamLogon
> > > translates into a badPwdCount update. 
> > > 
> > > I was waiting for those docs before proceeding, to avoid rework.  
> > 
> > I'm also wanting clarification on the UF_LOCKOUT flag in
> > msDS-User-Account-Control-Computed and userAccountControl
> > 
> > It appears that msDS-User-Account-Control-Computed should be referred to
> > by SAMR, as the source of the lockout algorithm, but there no reference
> > from MS-SAMR to this attribute. 
> > 
> > Indeed, it is unclear how UF_LOCKOUT and UF_PASSWORD_EXPIRED is to
> > behave, as 3.1.1.6 (18) bans this bit, but in:
> > 
> > 3.1.1.8.10
> > userAccountControl
> > 1. If the UF_LOCKOUT bit (section 2.2.1.13) is set and the lockoutTime
> > attribute is nonzero, the
> > lockoutTime attribute MUST be updated to a value of zero.
> > 
> > This implies that it can be set in userAccountControl.  Also, the sense
> > here seems backwards, surely clearing the bit sets lockoutTime to zero?
> > 
> > Also it says:
> > 
> > 2. The following bits, if set, MUST be unset before committing the
> > transaction: UF_LOCKOUT and
> > UF_PASSWORD_EXPIRED.
> > 
> > This further confuses me as to if these are computed or stored flags
> > (I'm assuming computed). 
> > 
> > This is the kind of level of detail I need in this area.
> 
> Additionally, as I'll need to implement the
> ms-DS-User-Account-Control-Computed attribute, how do I implement 
> 0x4000000
> UF_PARTIAL_SECRETS_ACCOUNT
> 0x8000000
> UF_USE_AES_KEYS
> 
> Because these are not included in MS-ADTS 3.1.1.4.5.17
> msDS-User-Account-Control-Computed

Any update on these questions?

Thanks,

-- 
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org
Samba Developer, Catalyst IT                   http://catalyst.net.nz




More information about the cifs-protocol mailing list