Create the user groups in LDAP (e.g. developers, administrators etc) and make the appropriate users part of those groups.
Then you can use ‘External user management configuration’ link in Users and Groups menu on IS console to enable the user authentication using LDAP.
The last step would be to map the LDAP groups with the ACLs.
Once ACLs are enabled for the services, IS will take care of authenticating of the servers.
HTH.
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