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https://issues.apache.org/jira/browse/RANGER-842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15347716#comment-15347716
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Selvamohan Neethiraj commented on RANGER-842:
---------------------------------------------

[~yujie.li] - Only after we commit this feature into Ranger,  Ambari will be 
able to support this feature.  

[~bolke]/[~scottgray1] -  I have rebased the attached patch; Also modified the 
design to support the 'traditional' UNIX authentication using the credValidator 
(old exe file)  and added your changes to a new module, unixauthpam.  
Based on this new approach, the ranger administrator should set
     'ranger.authentication.method' to  'PAM' in ranger-admin-site.xml  and  
     'ranger.usersync.passwordvalidator.path' to  
'./native/pamCredValidator.uexe' 

Please apply '0001-RANGER-842-This-patch-adds-PAM-auth-support-to-range.patch' 
first 
and then, apply 
'0002-RANGER-842-modified-to-create-a-separate-module-for-.patch'
to test these patches.

Please review and provide your feedback.


> Allow PAM for authentication
> ----------------------------
>
>                 Key: RANGER-842
>                 URL: https://issues.apache.org/jira/browse/RANGER-842
>             Project: Ranger
>          Issue Type: Improvement
>          Components: admin
>    Affects Versions: 0.5.1, 0.6.0
>            Reporter: Bolke de Bruin
>            Assignee: Selvamohan Neethiraj
>              Labels: authentication, security
>             Fix For: 0.6.0
>
>         Attachments: 0002-RANGER-842-pam-authentication.patch
>
>
> Ranger currently uses shadow based authentication if configured for unix 
> authentication. This way of authenticating is somewhat outdated as any recent 
> Linux system (and many of the BSDs) have PAM available. PAM allows multiple 
> authentication sources and also does authorization.
> Ranger should be able to use PAM for authentication



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