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I am pretty sure that the password command and script is run as root,
not as the user changing the password. What happens if you run the
password commands on the samba server? I don't have smbldap tools on
my system (Solaris, so not provided by the Sun distro) so I had to rely
on the OS password tools. By default, root is not going to have
sufficient privledges to change ldap passwords.
If you don't enable password sync, are you able to change your Windows
On 08/18/2010 08:49 AM, Christopher Springer wrote:
> I'm using Samba v3.5.4-62 on Fedora 13 PDC Using LDAP passdb backend
> and do the following...
> 1. Login as user on Windows system using domain user name and
> password - Login successful
> 2. Press Ctrl-Alt-Del
> 3. Press Change Password
> 4. Enter old and new password as prompted
> 5. Receive response "You do not have permission to change your
> I receive the following repeated twice in "/var/log/samba/log.smbd"...
> [2010/08/17 16:13:53.884482, 0]
> NTLMSSP NTLM1 packet check failed due to invalid signature!
> [2010/08/17 16:13:53.884592, 0]
> process_request_pdu: failed to do auth processing.
> [2010/08/17 16:13:53.884668, 0]
> process_request_pdu: error was NT_STATUS_ACCESS_DENIED.
> This was generated from a WindowsNT4 system. The issue can also be
> duplicated from Windows XP clients.
> My smb.conf file on this system (PDC):
> log level = 1
> workgroup = CORPDOM
> netbios name = CORPPDC
> passdb backend = ldapsam:ldap://127.0.0.1
> enable privileges = yes
> #encrypt passwords = yes
> username map = /etc/samba/smbusers
> printcap name = cups
> add user script = /usr/sbin/smbldap-useradd -m '%u'
> delete user script = /usr/sbin/smbldap-userdel '%u'
> add group script = /usr/sbin/smbldap-groupadd -p '%g'
> delete group script = /usr/sbin/smbldap-groupdel '%g'
> add user to group script = /usr/sbin/smbldap-groupmod -m '%u' '%g'
> delete user from group script = /usr/sbin/smbldap-groupmod -x '%u' '%g'
> set primary group script = /usr/sbin/smbldap-usermod -g '%g' '%u'
> add machine script = /usr/sbin/smbldap-useradd -w '%u'
> logon script = scripts/%U.bat
> logon path =
> logon drive =
> security = user
> domain logons = Yes
> os level = 35
> preferred master = Yes
> domain master = Yes
> wins support = Yes
> smb ports = 139
> #remote announce = 10.30.0.254/CORPDOM 10.20.255.255/CORPDOM
> #remote browse sync = 10.20.255.255 10.30.255.255
> #remote announce = 10.30.255.255
> #remote browse sync = 10.30.255.255
> ldap suffix = dc=brcrp,dc=com
> ldap machine suffix = ou=Computers
> ldap user suffix = ou=People
> ldap group suffix = ou=Group
> ldap idmap suffix = ou=Idmap
> ldap admin dn = cn=Manager,dc=brcrp,dc=com
> ldap ssl = no
> #ldap passwd sync = yes
> unix password sync = yes
> passwd program = /usr/sbin/smbldap-passwd %u
> passwd chat = *New*password:*%n\n*Retype*new*password:*%n\n*
> #client lanman auth = yes
> #unix password sync = yes
> #passwd program = /usr/sbin/smbldap-passwd -u %u
> idmap backend = ldap:ldap://127.0.0.1
> idmap uid = 15000-20000
> idmap gid = 15000-20000
> printing = cups
> comment = Network Logon Service
> path = /pub
> guest ok = Yes
> browseable = No
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