Cool Solution - Custom LDAP ACLs

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Note: Cool Solutions are articles documenting additional functionality based on Univention products. Packages provided by a Cool Solutions Repository are built by Univention, but will not be maintained. Not all of the shown steps in the article are covered by Univention Support. For questions about your support coverage contact your contact person at Univention before you want to implement one of the shown steps.

Also regard the legal notes at Terms of Service.
Note: This article is not yet reviewed.


First of all install the package univention-custom-ldap-acls via the command

univention-install univention-custom-ldap-acls

The package should be create some new UCR variables. Check these with the following command

ucr search acls

You should see these variables:

ldap/acls/custom/univentionCustomACLReferenceGroupModify/attrs: uniqueMember,memberUid
ldap/acls/custom/univentionCustomACLReferenceGroupModify/create: no
ldap/acls/custom/univentionCustomACLReferenceGroupModify/description: Edit groups
ldap/acls/custom/univentionCustomACLReferenceGroupModify/filter: objectClass=univentionGroup
ldap/acls/custom/univentionCustomACLReferenceUserCreate/create: yes
ldap/acls/custom/univentionCustomACLReferenceUserCreate/description: Edit user
ldap/acls/custom/univentionCustomACLReferenceUserCreate/filter: objectClass=posixAccount

Create extended attributes

After that, switch to the Univention Management Console and open the LDAP directory module. Expand the tab univention and search for custom attributes -> LDAP ACLs

Edit groups-modify and users-create. Go to the following Tab and tick the checkboxes:

Tab Data type:

Syntax class: userDn
Tick multi value
Tick editable after creation

Editing container

The next step is, to modify the users container in the LDAP directory module. Edit the container via right click -> Edit and move to the tab authorization. Now you can add one or more userDNs to assigning authorizations to that users, e.g execute the following command in the command line (replace <username>):

univention-ldapsearch uid=<username> | grep ^dn 

The output should be something as the follows:

dn: uid=<username>,cn=users,dc=example,dc=com

Copy the output, except the dn:, into the text field and click on save.

Create policies for users

The next step is, to give the user the permission to use the users module after the log in. Go to the users module and open the user, that you placed in the authorization field. Move to the tab Policies and open Policy: UMC. Create a new policy and name it "edit-user". Choose "UDM - Users (udm-users)" as an allowed UMC operation. Create another new policy and name it "edit-groups". Choose "UDM - Groups (udm-groups)" as an allowed UMC operation and save the settings after that.

Now the user is qualified to access the users and groups module via the UMC.

Further information

Further information about using UCR

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