Re: pam/winbind user not found problem

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On Wed, Jul 15, 2009 at 12:04 PM, Terry<td3201@xxxxxxxxx> wrote:
> On Wed, Jul 15, 2009 at 12:01 PM, Gary Greene<greeneg@xxxxxxxxxxxxxx> wrote:
>> On 7/15/09 9:29 AM, "Landon M. Kelsey, III" <landonmkelsey@xxxxxxxxxxx>
>> wrote:
>>> What is the best starter documentation on pam?
>>> Save me a web search!
>>>
>>> -----Original Message-----
>>> From: pam-list-bounces@xxxxxxxxxx [mailto:pam-list-bounces@xxxxxxxxxx] On
>>> Behalf Of Terry
>>> Sent: Wednesday, July 15, 2009 10:49 AM
>>> To: pam-list@xxxxxxxxxx
>>> Subject: pam/winbind user not found problem
>>>
>>> Hello,
>>>
>>> Sorry for the generic subject. I am not sure how to classify the
>>> problem more accurately.
>>>
>>> I am running pam-0.99.6.2-4.el5 on RHEL 5.3.  I have an application
>>> that uses pam.  Out of the box, it has this configuration file in
>>> /etc/pam.d:
>>> #%PAM-1.0
>>> auth       include      system-auth
>>> account    include      system-auth
>>> password   include      system-auth
>>>
>>> My system auth contains this:
>>> auth        required      pam_env.so
>>> auth        sufficient    pam_unix.so nullok try_first_pass
>>> auth        requisite     pam_succeed_if.so uid >= 500 quiet
>>> auth        sufficient    pam_winbind.so use_first_pass
>>> auth        required      pam_deny.so
>>> account     required      pam_unix.so broken_shadow
>>> account     sufficient    pam_localuser.so
>>> account     sufficient    pam_succeed_if.so uid < 500 quiet
>>> account     [default=bad success=ok user_unknown=ignore] pam_winbind.so
>>> account     required      pam_permit.so
>>> password    requisite     pam_cracklib.so try_first_pass retry=3
>>> password    sufficient    pam_unix.so md5 shadow nullok try_first_pass
>>> use_authtok
>>> password    sufficient    pam_winbind.so use_authtok
>>> password    required      pam_deny.so
>>> session     optional      pam_keyinit.so revoke
>>> session     required      pam_limits.so
>>> session     [success=1 default=ignore] pam_succeed_if.so service in
>>> crond quiet use_uid
>>> session     required      pam_unix.so
>>> session     required      pam_mkhomedir.so skel=/etc/skel umask=077
>>>
>>> SSH authentication with active directory accounts works just fine.
>>> The usernames are formatted as DOMAIN+username.  However, they do not
>>> work with this application for some reason.  The developer claims that
>>> the formatting shouldn't be a problem with their app so I am double
>>> checking here.   When I try to auth with the application, I get this
>>> in /var/log/secure:
>>>
>>> Jul 15 10:40:59 omadvdss01c DS-System[6827]: pam_unix(dssystem:auth):
>>> check pass; user unknown
>>> Jul 15 10:40:59 omadvdss01c DS-System[6827]: pam_unix(dssystem:auth):
>>> authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=
>>> Jul 15 10:40:59 omadvdss01c DS-System[6827]:
>>> pam_succeed_if(dssystem:auth): error retrieving information about user
>>> DOMAIN+username
>>>
>>> Just to prove I can see that user, here is a 'getent passwd':
>>> DOMAIN+username:*:15000:15019:User Name:/home/DOMAIN/username:/bin/bash
>>>
>>> Any ideas?
>>>
>>> _______________________________________________
>>> Pam-list mailing list
>>> Pam-list@xxxxxxxxxx
>>> https://www.redhat.com/mailman/listinfo/pam-list
>>>
>>> _______________________________________________
>>> Pam-list mailing list
>>> Pam-list@xxxxxxxxxx
>>> https://www.redhat.com/mailman/listinfo/pam-list
>>
>> You haven't got nscd running have you? If you do, turn it off. It causes
>> weird auth issues with Winbind.
>
> Thanks for the response. No, I disable it.
>

I think I found the issue.  It was giving the users because of this:
auth        requisite     pam_succeed_if.so uid >= 500 quiet

I am not sure why either.  This should allow the conversation to
continue if the uid is greater than or equal to 500?  Well, this user
in question has a uid of 15000.  I'm reviewing the docs just to see
what I am missing.

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