[389-users] Only username as bind dn

[Rich Megginson]

On 01/16/2014 12:56 AM, Paolo Barbato wrote:
> Thanks for replies, I think I need to better describe what I'm testing.
>
> As I said I've a central repository for credentials accessible via ldaps.
>
> 389dirsvr stores some information, but before get them I need that a user authenticate on the central repository.
>
> So I've activated and configured PAM Pass Through Authentication Plug-in, and following instructions creating a specific /etc/pam.d/ldapserver as well as /etc/pam_ldap.conf
>
> This is working, I mean that if I type
>
> ldapsearch -v -LLL -Hldaps://my389 -b"dc=myDC" -D "uid=myUser" -W -x
>
> the PAM PTA strips myUser from binddn and use that as login username for PAM.
>
> Let me just say that in production I'll use a different repository based on Active DIrectory, so probably I'll use SSSD, as you suggest.
>
> The problem.
>
> If I use a command like
>
> ldapsearch -v -LLL -Hldaps://my389 -b"dc=myDC" -D "myUser" -W -x
>
> it fails, since 389dirsrv makes a syntax check on binddn before pass stripped myUser value to PAM PTA
>
> This is really trye since I do not any attempt on ldap central repository access logs.
>
> Here my question : is it mandatory using as binddn (-D) a syntax like uid=myUser or cn=myUser, or is it possible to configure 389dirsrv to rewrite myUser in uid=myUser before process it ?

No.  The argument to -D must be a DN.

There are SASL mechanisms that take a username instead of a DN.

>
>
> Regards,
> Paolo.
>
>
>
> On 15/gen/2014, at 23:13, Dan Lavu <dan at lavu.net> wrote:
>
>> Why are you using pam passthrough, what are you using as your authentication mechanism? SSSD has all commonly implemented authentication mechanisms.
>>
>>
>>
>> On 01/15/2014 12:54 PM, Jonathan Vaughn wrote:
>>> If you want to be able to map the simple username "myUser" to say, "uid=myUser,cn=Users,dc=mycompany,dc=net", you probably are best off using SSSD to handle that.
>>> SSSD can be configured to know where to search and how to apply the supplied username to the search (i.e. to look for anything under cn=Users,dc=mycompany,dc=net where uid=[the supplied username]).
>>>
>>> SSSD in turn provides a PAM module to talk to the SSSD daemon itself, which is where you can hook up your PAM passthrough authentication.
>>>
>>> i.e., we use SSSD for SSO login to our Linux machines, and have the following lines (in addition to the usual stuff) in our pam.d/password-auth :
>>>
>>> auth        sufficient    pam_sss.so use_first_pass
>>> account     [default=bad success=ok user_unknown=ignore] pam_sss.so
>>> password    sufficient    pam_sss.so use_authtok
>>> session     optional      pam_sss.so
>>>
>>>
>>>
>>>
>>> On Wed, Jan 15, 2014 at 3:46 AM, Paolo Barbato <paolo.barbato at igi.cnr.it> wrote:
>>> Hi 389-users,
>>>
>>> I'm testing last released 389 dirsrv on a rhel 6.5.
>>>
>>> I've deployed a PAM passthrough, since I have a central repository for credentials, and it works.
>>>
>>> I guess if it would be possible to use a simple username or it's mandatory use syntax like uid=myuser (or cn=..) as bind dn.
>>>
>>> ldapsearch -v -LLL -Hldaps://my389 -b"dc=myDC" -D "uid=myUser" -W -x   works
>>>
>>> ldapsearch -v -LLL -Hldaps://my389 -b"dc=myDC" -D "myUser" -W -x   doesn't work
>>>
>>> ldap_bind: No such object (32)
>>>          additional info: Bind DN [myUser] is invalid or not found
>>>
>>> So the question is if would be possible rewrite in some way the bind dn before syntax check.
>>>
>>> Regards,
>>> Paolo.
>>>
>>> ------------------------------------------------------------------------------------------------
>>> Paolo Barbato
>>>
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>>> corso Stati Uniti,4
>>>
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> ------------------------------------------------------------------------------------------------
> Paolo Barbato
>
> Consorzio RFX
> corso Stati Uniti,4
> 35127 Padova - Italy                     	
> Network Administrator
> phone: +39 049 8295097 fax: +39 049 8700718
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