[Samba] Samba integration with AD

Brian Atkins batkins at tlcdelivers.com
Thu Mar 23 21:41:26 GMT 2006

I know this question has been posed over and over (and over) again, but 
I'm at my wit's end. I've dug into the Samba docs, Gentoo specific docs, 
and PAM docs, and Googled the heck out of it...

In any event, I'm running Gentoo 2006.0 (just built) running kernel 
2.6.15 and Samba 3.0.21b. I'm 'trying' to set up a simple file server 
with SSO capabilities to a 2K AD domain.

So far, the Samba/Winbind side seems great. I am able to map shares to 
windows workstations based on the windows uid/gid without a hiccup. The 
wbinfo [-u|-g] and gentent [passwd|group] commands work great.

# wbinfo -u

# wbinfo -g | more
Domain Guests
Domain Users
Schema Admins

# getent passwd

# getent group
Domain Guests:x:10020:
Domain Users:x:10011:
Schema Admins:x:10015:

Kinit doesn't work quite right:

# kinit
Password for administrator at AD_DOMAIN:

# kinit -k
kinit(v5): Client not found in Kerberos database while getting initial 
(Obviously doesn't)

The biggest issue appears to be with PAM. Local and ssh logins using 
AD_DOMAIN accounts. Neither work and fail without notification to the 
user, but the following appears in the logs:

Mar 23 16:08:42 32gs sshd(pam_unix)[8586]: check pass; user unknown
Mar 23 16:08:42 32gs sshd(pam_unix)[8586]: authentication failure; 
logname= uid=0 euid=0 tty=ssh ruser= rhost=x.x.x.x
Mar 23 16:08:44 32gs sshd[8581]: error: PAM: Authentication failure for 
testuser from x.x.x.x

# testparm
Load smb config files from /etc/samba/smb.conf
Processing section "[share]"
Loaded services file OK.
WARNING: passdb expand explicit = yes is deprecated
'winbind separator = +' might cause problems with group membership.
Press enter to see a dump of your service definitions
         workgroup = AD_DOMAIN
         realm = AD_DOMAIN.FQDN
         netbios name = MACHINENAME
         server string = MACHINENAME
         interfaces = x.x.x.x, 127.
         bind interfaces only = Yes
         security = ADS
         log level = 5
         log file = /var/log/samba/log.%m
         max log size = 50
         name resolve order = hosts wins bcast
         socket options = TCP_NODELAY SO_RCVBUF=16384 SO_SNDBUF=16384
         load printers = No
         os level = 5
         preferred master = No
         local master = No
         domain master = No
         dns proxy = No
         wins server =
         ldap ssl = no
         idmap uid = 10000-20000
         idmap gid = 10000-20000
         template shell = /bin/bash
         winbind separator = +
         winbind use default domain = Yes
         hosts allow = x.x.x.x, 127.

         comment = SHARE
         path = /mnt/share
         invalid users = root
         valid users = "@AD_DOMAIN+Domain Users"
         read only = No
         create mask = 0777
         directory mask = 0777

# cat /etc/pam.d/login
auth       required     /lib/security/pam_securetty.so
auth       sufficient   /lib/security/pam_winbind.so
auth       sufficient   /lib/security/pam_unix.so use_first_pass
auth       required     /lib/security/pam_stack.so service=system-auth
auth       required     /lib/security/pam_nologin.so
account    sufficient   /lib/security/pam_winbind.so
account    required     /lib/security/pam_stack.so service=system-auth
password   required     /lib/security/pam_stack.so service=system-auth
session    required     /lib/security/pam_stack.so service=system-auth
session    optional     /lib/security/pam_console.so

# cat /etc/pam.d/samba
auth    required  /lib/security/pam_stack.so service=system-auth
account required  /lib/security/pam_stack.so service=system-auth

# cat /etc/pam.d/sshd
auth       include      system-auth
auth       required     pam_shells.so
auth       required     pam_nologin.so
account    include      system-auth
password   include      system-auth
session    include      system-auth

Anything else?


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