[keycloak-user] retrieving group membership info from LDAP/AD

[Mahantesh Prasad Katti]

Thanks Marek. I looked at the built in example. I am looking for a couple of details.


1.       What is the bind password for the embedded apache ds?

2.       I had a quick look at the ldaprealm.json document. It turned out that group name and the realm role name are identical. Is that a requirement for role-group mapping to work in keycloak?

3.       Also, is role to group mapping always one to one? In our application, one role is invariably mapped to multiple ldap groups.


Regards,
Prasad

From: Marek Posolda [mailto:mposolda at redhat.com]
Sent: Monday, January 04, 2016 3:17 PM
To: Mahantesh Prasad Katti; keycloak-user at lists.jboss.org
Subject: Re: [keycloak-user] retrieving group membership info from LDAP/AD

On 30/12/15 18:42, Mahantesh Prasad Katti wrote:
Hi All,

In our application, we integrate with Microsoft AD for authenticating users. As part of the authentication result, we also fetch group information for the user authenticated. We also have a pre-defined group-role mapping defined in the application server [This is a JEE configuration file]. This helps decide whether a particular user based on the role he belongs to can access a resource or not. I read another thread "Apply group membership filter on ldap login <http://lists.jboss.org/pipermail/keycloak-user/2015-December/003982.html> " on similar lines. Couple of clarifications.


1.       Based on what I read there is no feature to get roles and map them to specific roles in keycloak and would be available in a future release. I just wanted to understand if my reading of this is on the right lines. Also, wanted to know if there's a workaround for this in the short term.
The feature to get LDAP roles and map them to specific roles in Keycloak is available. We have LDAP Role Mapper (See documentation http://keycloak.github.io/docs/userguide/keycloak-server/html/user_federation.html#ldap_mappers and our ldap example for details).

The thread "Apply group membership filter on ldap login" is more about restricting that some LDAP users are not able to login at all (For example, specify that just users, which are members of LDAP group "cn=mygroup,o=myorg,dc=example,dc=com" are able to login and all the other users are filtered). This will be available from 1.8 release (it's in master already).


2.       Also does keycloak provide fine grained access control on the lines of apache shiro?
Keycloak provides SSO and authentication. Once you authenticate, your application will receive access token with the roles of user from Keycloak (We have stuff like scope, protocol mappers etc, which allows better control under what exactly will go to access token. See docs and examples for details).

Then it's up to the application how it interprets roles from accessToken . The authorization needs to be actually done by application itself (unless it's JEE application where we have mapping of accessToken roles to JEE roles. Again see examples). We have separate subproject  under development (no official release yet available), which will allow more authorization possibilities.

Marek




Thanks
Prasad




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