A. Clausen
2004-Aug-20 23:32 UTC
[Samba] Win2K Clients Getting Password Prompt When Trying To Access Samba Shares
I'm running Samba 3.0.4 with Kerberos 5 v 1.3.4. I'm accessing Win2k
shares from the Samba box without a hitch, but whenever I try to open up
Samba shares on the Win2K clients, I get a password prompt. If I access
the shares via the IP address of the Samba machine, there's no problem.
I don't know if this is relevant, but my Win2k PDC is showing the
following error on a regular basis
Pre-authentication failed:
User Name: mp1$
User ID: ALBERNI.NET\mp1$
Service Name: krbtgt/ALBERNI.NET
Pre-Authentication Type: 0x0
Failure Code: 0x19
Client Address: 64.141.6.251
Below is my configs:
smb.conf:
[global]
# workgroup = NT-Domain-Name or Workgroup-Name, eg: REDHAT4
workgroup = ALBERNI.NET
username map = /etc/samba/smbusers
idmap uid = 10000-20000
idmap gid = 10000-20000
template shell = /bin/bash
winbind separator = +
winbind use default domain = Yes
winbind enum users = yes
winbind enum groups = yes
encrypt passwords = yes
# server string is the equivalent of the NT Description field
server string = MP1 Samba Server
# Security mode. Defines in which mode Samba will operate. Possible
# values are share, user, server, domain and ads. Most people will want
# user level security. See the HOWTO Collection for details.
security = ADS
# This option is important for security. It allows you to restrict
# connections to machines which are on your local network. The
# following example restricts access to two C class networks and
# the "loopback" interface. For more examples of the syntax see
# the smb.conf man page
; hosts allow = 192.168.1. 192.168.2. 127.
hosts allow = 64.141.6. 127.
# If you want to automatically load your printer list rather
# than setting them up individually then you'll need this
load printers = yes
# you may wish to override the location of the printcap file
; printcap name = /etc/printcap
# on SystemV system setting printcap name to lpstat should allow
# you to automatically obtain a printer list from the SystemV spool
# system
; printcap name = lpstat
# It should not be necessary to specify the print system type unless
# it is non-standard. Currently supported print systems include:
# bsd, cups, sysv, plp, lprng, aix, hpux, qnx
; printing = cups
# Uncomment this if you want a guest account, you must add this to
/etc/passwd
# otherwise the user "nobody" is used
; guest account = pcguest
# this tells Samba to use a separate log file for each machine
# that connects
log file = /var/log/samba/log.%m
# Put a capping on the size of the log files (in Kb).
max log size = 50
# Use password server option only with security = server
# The argument list may include:
# password server = My_PDC_Name [My_BDC_Name] [My_Next_BDC_Name]
# or to auto-locate the domain controller/s
# password server = *
; password server = <NT-Server-Name>
password server = *
# Use the realm option only with security = ads
# Specifies the Active Directory realm the host is part of
; realm = MY_REALM
realm = ALBERNI.NET
ads server = cedar.alberni.net
# Backend to store user information in. New installations should
# use either tdbsam or ldapsam. smbpasswd is available for backwards
# compatibility. tdbsam requires no further configuration.
; passdb backend = tdbsam
# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting.
# Note: Consider carefully the location in the configuration file of
# this line. The included file is read at that point.
; include = /usr/local/samba/lib/smb.conf.%m
# Most people will find that this option gives better performance.
# See the chapter 'Samba performance issues' in the Samba HOWTO
Collection
# and the manual pages for details.
# You may want to add the following on a Linux system:
# SO_RCVBUF=8192 SO_SNDBUF=8192
socket options = TCP_NODELAY
# Configure Samba to use multiple interfaces
# If you have multiple network interfaces then you must list them
# here. See the man page for details.
; interfaces = 192.168.12.2/24 192.168.13.2/24
# Browser Control Options:
# set local master to no if you don't want Samba to become a master
# browser on your network. Otherwise the normal election rules apply
; local master = no
# OS Level determines the precedence of this server in master browser
# elections. The default value should be reasonable
; os level = 33
os level = 10
# Domain Master specifies Samba to be the Domain Master Browser. This
# allows Samba to collate browse lists between subnets. Don't use this
# if you already have a Windows NT domain controller doing this job
; domain master = yes
# Preferred Master causes Samba to force a local browser election on startup
# and gives it a slightly higher chance of winning the election
; preferred master = yes
# Enable this if you want Samba to be a domain logon server for
# Windows95 workstations.
; domain logons = yes
# if you enable domain logons then you may want a per-machine or
# per user logon script
# run a specific logon batch file per workstation (machine)
; logon script = %m.bat
# run a specific logon batch file per username
; logon script = %U.bat
# Where to store roving profiles (only for Win95 and WinNT)
# %L substitutes for this servers netbios name, %U is username
# You must uncomment the [Profiles] share below
; logon path = \\%L\Profiles\%U
# Windows Internet Name Serving Support Section:
# WINS Support - Tells the NMBD component of Samba to enable it's WINS
Server
; wins support = yes
# WINS Server - Tells the NMBD components of Samba to be a WINS Client
# Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
; wins server = w.x.y.z
# WINS Proxy - Tells Samba to answer name resolution queries on
# behalf of a non WINS capable client, for this to work there must be
# at least one WINS Server on the network. The default is NO.
; wins proxy = yes
# DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
# via DNS nslookups. The default is NO.
dns proxy = no
# These scripts are used on a domain controller or stand-alone
# machine to add or delete corresponding unix accounts
; add user script = /usr/sbin/useradd %u
; add group script = /usr/sbin/groupadd %g
; add machine script = /usr/sbin/adduser -n -g machines -c Machine -d
/dev/null -s /bin/false %u
; delete user script = /usr/sbin/userdel %u
; delete user from group script = /usr/sbin/deluser %u %g
; delete group script = /usr/sbin/groupdel %g
#============================ Share Definitions
=============================[homes]
comment = Home Directories
browseable = no
writable = yes
# Un-comment the following and create the netlogon directory for Domain
Logons
; [netlogon]
; comment = Network Logon Service
; path = /usr/local/samba/lib/netlogon
; guest ok = yes
; writable = no
; share modes = no
# Un-comment the following to provide a specific roving profile share
# the default is to use the user's home directory
;[Profiles]
; path = /usr/local/samba/profiles
; browseable = no
; guest ok = yes
# NOTE: If you have a BSD-style print system there is no need to
# specifically define each individual printer
[printers]
comment = All Printers
path = /usr/spool/samba
browseable = no
# Set public = yes to allow user 'guest account' to print
guest ok = no
writable = no
printable = yes
# This one is useful for people to share files
[tmp]
comment = Temporary file space
path = /tmp
read only = no
public = yes
# A publicly accessible directory, but read only, except for people in
# the "staff" group
[public]
comment = Public Stuff
path = /home/samba
public = yes
writable = yes
printable = no
write list = alberni.net
# Other examples.
#
# A private printer, usable only by fred. Spool data will be placed in
fred's
# home directory. Note that fred must have write access to the spool
directory,
# wherever it is.
;[fredsprn]
; comment = Fred's Printer
; valid users = fred
; path = /homes/fred
; printer = freds_printer
; public = no
; writable = no
; printable = yes
# A private directory, usable only by fred. Note that fred requires write
# access to the directory.
;[fredsdir]
; comment = Fred's Service
; path = /usr/somewhere/private
; valid users = fred
; public = no
; writable = yes
; printable = no
# a service which has a different directory for each machine that connects
# this allows you to tailor configurations to incoming machines. You could
# also use the %U option to tailor it by user name.
# The %m gets replaced with the machine name that is connecting.
;[pchome]
; comment = PC Directories
; path = /usr/pc/%m
; public = no
; writable = yes
# A publicly accessible directory, read/write to all users. Note that
all files
# created in the directory by users will be owned by the default user, so
# any user with access can delete any other user's files. Obviously this
# directory must be writable by the default user. Another user could of
course
# be specified, in which case all files would be owned by that user instead.
;[public]
; path = /usr/somewhere/else/public
; public = yes
; only guest = yes
; writable = yes
; printable = no
# The following two entries demonstrate how to share a directory so that two
# users can place files there that will be owned by the specific users.
In this
# setup, the directory should be writable by both users and should have the
# sticky bit set on it to prevent abuse. Obviously this could be extended to
# as many users as required.
[logs]
path = /var/log
public = no
admin users = root admin administrator
valid users = root admin administrator
read only = no
browseable = yes
writeable = yes
krb5.conf:
[logging]
default = FILE:/var/log/krb5/libs.log
kdc = FILE:/var/log/krb5/kdc.log
admin_server = FILE:/var/log/krb5/admin.log
[libdefaults]
ticket_lifetime = 24000
default_realm = ALBERNI.NET
forwardable = true
proxiable = true
default_tgs_enctypes = des-cbc-crc des-cbc-md5
default_tkt_enctypes = des-cbc-crc des-cbc-md5
[realms]
ALBERNI.NET = {
kdc = cedar.alberni.net
default_domain = alberni.net
}
[domain_realm]
.alberni.net = CEDAR.ALBERNI.NET
alberni.net = CEDAR.ALBERNI.NET
nsswitch.conf:
passwd: compat winbind
group: compat winbind
hosts: files dns winbind
networks: files
services: files
protocols: files
rpc: files
ethers: files
netmasks: files
netgroup: files
bootparams: files
automount: files
aliases: files
--
A. Clausen
techlists@alberni.net
Gerald (Jerry) Carter
2004-Aug-23 18:36 UTC
[Samba] Win2K Clients Getting Password Prompt When Trying To Access Samba Shares
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 A. Clausen wrote: | I'm running Samba 3.0.4 with Kerberos 5 v 1.3.4. I'm accessing Win2k | shares from the Samba box without a hitch, but whenever I try to open up | Samba shares on the Win2K clients, I get a password prompt. If I access | the shares via the IP address of the Samba machine, there's no problem. | | I don't know if this is relevant, but my Win2k PDC is showing the | following error on a regular basis | | Pre-authentication failed: | User Name: mp1$ | User ID: ALBERNI.NET\mp1$ | Service Name: krbtgt/ALBERNI.NET | Pre-Authentication Type: 0x0 | Failure Code: 0x19 | Client Address: 64.141.6.251 Windows 200x requires krb5 preauthentication by the client before it will issue a TGT. Looks like your kerberos setup is not working correctly (also the cause of the password prompt issue mentioned above). cheers, jerry - --------------------------------------------------------------------- Alleviating the pain of Windows(tm) ------- http://www.samba.org GnuPG Key ----- http://www.plainjoe.org/gpg_public.asc "If we're adding to the noise, turn off this song"--Switchfoot (2003) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBKjkdIR7qMdg1EfYRArtyAKCVchfHll4sSKbba/MjAEgatiKxtwCfUvRl peelNUX8ORwcdBl4YuMzQKI=Ryw+ -----END PGP SIGNATURE-----