Hi everyone,

this one is giving me headaches for a while now and I could not get
anything useful from the usual sources.
So maybe someone on this list can give me any ideas:

There is a samba server
Version 3.0.22
on Ubuntu Dapper
see below for configuration details)
and it is configured to authenticate against a Windows 2000 Server
Ver. 5.0.2.195
preped for ADS 2003 and Exchange 2003
domain runs in "native" mode
defined as global catalog

wbinfo -u shows all ADS users

wbinfo -t, wbinfo -D 'Domain' are all successful

winbind is running

/etc/nsswitch.conf has 'files winbind' for passwd, shadow and group.

nscd has been activated and deactivated.

The problem is, some Windows users trying to access shares or printers
on the samba server cannot connect but some can. The only difference in
the smbd logs (log level 3) I spotted is this:

smbd/sesssetup.c:reply_spnego_kerberos(303)
Username DOMAIN/someuser is invalid on this system

for users that can't connect.

When trying on the samba server:

rpcclient -c 'lookupnames somename' -Usomeuser localhost -d 3

for a not working account, I get (IPs and names changed):

added interface ip=1.2.3.5 bcast=1.2.255.255 nmask=255.255.0.0
lp_load: refreshing parameters
Initialising global parameters
params.cm_process() - Processing configuration file "/etc/samba/smb.conf"
Processing section "[global]"
Password:
Connecting to host=localhost
Connecting to 127.0.0.1 at port 445
Doing spnego session setup (blob length=128)
got OID=1 2 840 113554 1 2 2
got OID=1 2 840 48018 1 2 2
got OID=1 3 6 1 4 1 311 2 2 10
got principal=cifs/principal.sub.domain.test@SUB.DOMAIN.TEST
Got challenge flags:
Got NTLMSSP neg_flags=0x60890235
NTLMSSP: Set final flags:
Got NTLMSSP neg_flags=0x60080215
NTLMSSP Sign/Seal - Initialising with flags:
Got NTLMSSP neg_flags=0x60080215
SPNEGO login failed: Logon failure
failed session setup with NT_STATUS_LOGON_FAILURE
Cannot connect to server. Error was NT_STATUS_LOGON_FAILURE

The same command still on the samba server but with the ads servers IP:

rpcclient -c 'lookupnames somename' -Usomeuser 1.2.3.4 -d 3

added interface ip=1.2.3.5 bcast=1.2.255.255 nmask=255.255.0.0
lp_load: refreshing parameters
Initialising global parameters
params.cm_process() - Processing configuration file "/etc/samba/smb.conf"
Processing section "[global]"
Password:
Connecting to host=1.2.3.4
Connecting to 1.2.3.4 at port 445
Doing spnego session setup (blob length=117)
got OID=1 2 840 48018 1 2 2
got OID=1 2 840 113554 1 2 2
got OID=1 2 840 113554 1 2 2 3
got OID=1 3 6 1 4 1 311 2 2 10
got principal=principal$@SUB.DOMAIN.TEST
Got challenge flags:
Got NTLMSSP neg_flags=0x62890215
NTLMSSP: Set final flags:
Got NTLMSSP neg_flags=0x60080215
NTLMSSP Sign/Seal - Initialising with flags:
Got NTLMSSP neg_flags=0x60080215
rpc_pipe_bind: Remote machine 1.2.3.4 pipe \lsarpc fnum 0x9 bind request
returned ok.
lsa_io_sec_qos: length c does not match size 8
rpc_pipe_bind: Remote machine 1.2.3.4 pipe \lsarpc fnum 0xa bind request
returned ok.
lsa_io_sec_qos: length c does not match size 8
somename S- (User: 1)

I could not make out any difference in the user accounts between working
and not working accounts.

Any suggestions would be appreciated.

Thanks in advance.

André



Samba Server configuration:
[global]
dos charset = CP850
unix charset = UTF-8
display charset = LOCALE
workgroup = SUB
realm = SUB.DOMAIN.TEST
netbios name = MYMACHINE
netbios aliases =
netbios scope =
server string = bitkit
interfaces =
bind interfaces only = No
security = ADS
auth methods =
encrypt passwords = Yes
update encrypted = No
client schannel = Auto
server schannel = Auto
allow trusted domains = Yes
hosts equiv =
map to guest = Never
null passwords = No
obey pam restrictions = No
password server = 192.168.0.69
smb passwd file = /etc/samba/smbpasswd
private dir = /etc/samba
passdb backend = smbpasswd
algorithmic rid base = 1000
root directory =
guest account = nobody
enable privileges = Yes
pam password change = No
passwd program =
passwd chat = *new*password* %n\n *new*password* %n\n *changed*
passwd chat debug = No
passwd chat timeout = 2
check password script =
username map =
password level = 0
username level = 0
unix password sync = No
restrict anonymous = 0
lanman auth = Yes
ntlm auth = Yes
client NTLMv2 auth = No
client lanman auth = Yes
client plaintext auth = Yes
preload modules =
use kerberos keytab = No
log level = 0
syslog = 1
syslog only = No
log file =
max log size = 5000
debug timestamp = Yes
debug hires timestamp = No
debug pid = No
debug uid = No
smb ports = 445 139
large readwrite = Yes
max protocol = NT1
min protocol = CORE
read bmpx = No
read raw = Yes
write raw = Yes
disable netbios = No
reset on zero vc = No
acl compatibility =
defer sharing violations = Yes
nt pipe support = Yes
nt status support = Yes
announce version = 4.9
announce as = NT
max mux = 50
max xmit = 16644
name resolve order = lmhosts wins host bcast
max ttl = 259200
max wins ttl = 518400
min wins ttl = 21600
time server = No
unix extensions = Yes
use spnego = Yes
client signing = auto
server signing = No
client use spnego = Yes
enable asu support = Yes
svcctl list =
change notify timeout = 60
deadtime = 0
getwd cache = Yes
keepalive = 30
kernel change notify = Yes
lpq cache time = 30
max smbd processes = 0
paranoid server security = Yes
max disk size = 0
max open files = 10000
socket options = TCP_NODELAY
use mmap = Yes
hostname lookups = No
name cache timeout = 660
load printers = Yes
printcap cache time = 750
printcap name =
cups server =
iprint server =
disable spoolss = No
enumports command =
addprinter command =
deleteprinter command =
show add printer wizard = Yes
os2 driver map =
mangling method = hash2
mangle prefix = 1
max stat cache size = 0
stat cache = Yes
machine password timeout = 604800
add user script =
rename user script =
delete user script =
add group script =
delete group script =
add user to group script =
delete user from group script =
set primary group script =
add machine script =
shutdown script =
abort shutdown script =
username map script =
logon script =
logon path = \\%N\%U\profile
logon drive =
logon home = \\%N\%U
domain logons = No
os level = 2
lm announce = Auto
lm interval = 60
preferred master = Auto
local master = Yes
domain master = Auto
browse list = Yes
enhanced browsing = Yes
dns proxy = Yes
wins proxy = No
wins server =
wins support = No
wins hook =
wins partners =
kernel oplocks = Yes
lock spin count = 3
lock spin time = 10
oplock break wait time = 0
add share command =
change share command =
delete share command =
eventlog list =
config file =
preload =
lock directory =
pid directory = /var/run/samba
utmp directory =
wtmp directory =
utmp = No
default service =
message command =
get quota command =
set quota command =
remote announce =
remote browse sync =
socket address = 0.0.0.0
homedir map = auto.home
afs username map =
afs token lifetime = 604800
log nt token command =
time offset = 0
NIS homedir = No
panic action =
host msdfs = No
enable rid algorithm = Yes
passdb expand explicit = Yes
idmap backend =
idmap uid = 10000-300000
idmap gid = 10000-300000
template homedir = /tmp/
template shell = /bin/false
winbind separator = /
winbind cache time = 300
winbind enum users = Yes
winbind enum groups = Yes
winbind use default domain = Yes
winbind trusted domains only = No
winbind nested groups = No
winbind max idle children = 3
winbind nss info = template
comment =
path =
username =
invalid users =
valid users =
admin users =
read list =
write list =
printer admin =
force user =
force group =
read only = Yes
acl check permissions = Yes
acl group control = No
acl map full control = Yes
create mask = 0744
force create mode = 00
security mask = 0777
force security mode = 00
directory mask = 0755
force directory mode = 00
directory security mask = 0777
force directory security mode = 00
force unknown acl user = No
inherit permissions = No
inherit acls = No
inherit owner = No
guest only = No
guest ok = No
only user = No
hosts allow =
hosts deny =
allocation roundup size = 1048576
aio read size = 0
aio write size = 0
aio write behind =
ea support = No
nt acl support = Yes
profile acls = No
map acl inherit = No
afs share = No
block size = 1024
max connections = 0
min print space = 0
strict allocate = No
strict sync = No
sync always = No
use sendfile = No
write cache size = 0
max reported print jobs = 0
max print jobs = 1000
printable = No
printing = bsd
cups options =
print command = lpr -r -P'%p' %s
lpq command = lpq -P'%p'
lprm command = lprm -P'%p' %j
lppause command =
lpresume command =
queuepause command =
queueresume command =
printer name =
use client driver = No
default devmode = No
force printername = No
default case = lower
case sensitive = Auto
preserve case = Yes
short preserve case = Yes
mangling char = ~
hide dot files = Yes
hide special files = No
hide unreadable = No
hide unwriteable files = No
delete veto files = No
veto files =
hide files =
veto oplock files =
map archive = Yes
map hidden = No
map system = No
map readonly = yes
mangled names = Yes
mangled map =
store dos attributes = No
browseable = Yes
blocking locks = Yes
csc policy = manual
fake oplocks = No
locking = Yes
oplocks = Yes
level2 oplocks = Yes
oplock contention limit = 2
posix locking = Yes
strict locking = Yes
share modes = Yes
dfree cache time = 0
dfree command =
copy =
preexec =
preexec close = No
root postexec =
available = Yes
volume =
fstype = NTFS
set directory = No
wide links = Yes
follow symlinks = Yes
dont descend =
magic script =
magic output =
delete readonly = No
dos filemode = No
dos filetimes = Yes
dos filetime resolution = No
fake directory create times = No
vfs objects =
msdfs root = No
msdfs proxy =

[Software]
path = /opt/software/
guest ok = Yes

[print$]
path = /etc/samba/printer/
valid users = @printops
write list = @printops
force group = "printops"
force create mode = 0664
force directory mode = 0775

[... stripped other shares ... ]




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