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From "Benoy Antony (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10650) Add ability to specify a reverse ACL (black list) of users and groups
Date Tue, 01 Jul 2014 01:22:25 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Benoy Antony updated HADOOP-10650:

    Attachment: HADOOP-10650.patch

Attaching a new patch based on trunk.
Includes updates in  the Service Authorization documentation.

The new type of ACLs are referred as _blocked_ ACLs (instead of _reverse_ ACLs).

For each ACL, it is possible to define a _blocked_  ACL by including _blocked_ as the suffix.

Example. For security.client.protocol.acl, the blocked ACL can be specified using key _security.client.protocol.acl.blocked_
The protocol access is allowed if user is included in ACL AND not included in _blocked_ ACL.
The key to specify default blocked ACL is also defined. That will be _security.service.authorization.default.acl.blocked_.

> Add ability to specify a reverse ACL (black list) of users and groups
> ---------------------------------------------------------------------
>                 Key: HADOOP-10650
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10650
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: security
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HADOOP-10650.patch, HADOOP-10650.patch
> Currently , it is possible to define a ACL (user and groups) for a service. To temporarily
remove authorization for a set of users, administrator needs to remove the users from the
specific group and this may be a lengthy process ( update ldap groups, flush caches on machines).
>  If there is a facility to define a reverse ACL for services, then administrator can
disable users by specifying the users in reverse ACL. In other words, one can specify a whitelist
of users and groups as well as a blacklist of users and groups. 
> One can also specify a default blacklist to disable the users from accessing any service.

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