[Samba] [Q] Are passwords case-sensitive in samba 3?

Andrew Bartlett abartlet at samba.org
Tue Jun 28 12:18:13 GMT 2005

On Fri, 2005-06-24 at 15:02 -0400, Maurice Volaski wrote:
> >Maurice Volaski wrote:
> >
> >>  Apparently it was possible from Windows 2000 and XP clients
> >>  to ignore the case of a mixed-case password and successfully
> >  > logon users in samba-2.2.8a. Samba 3.0.14a-r1, however, is
> >>  case-sensitive. (Passwords are stored in the smbpasswd file
> >>  and encrypt passwords = Yes.)
> >
> >lanman passwords are case insensitive.  NTLM passwords are
> >case sensitive.
> >
> Yes, but they appear to have been irrelevant under samba-2.2.8a 
> because W2K and XP seem to send the passwords in both forms.
> In addition,  samba 3.0.14a-r1 has an option ntlm auth, which when 
> set to "no" is supposed to be disable NTLM password authentication, 
> but samba appears to ignore this option and always requires NTLM 
> passwords if the client offers them. I filed this as bug 2821.

Turing this option off should restrict Samba to Kerberos and NLTMv2
logins.  There is no way to force Samba to ignore a supplied NT response
in favour of the less secure LM response.

Andrew Bartlett

Andrew Bartlett                                http://samba.org/~abartlet/
Samba Developer, SuSE Labs, Novell Inc.        http://suse.de
Authentication Developer, Samba Team           http://samba.org
Student Network Administrator, Hawker College  http://hawkerc.net
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