And also important, affect role based on LDAP group.
If it's possible to create a LDAP Group type,(auto create user option enabled) then when the user from a group connect for the first time, the good role is automatically assigned.

I would also like to have ldap auth restricted to members of an ldap group.

I need this for work, so I put $100 down for anyone who will complete this functionality.

https://www.bountysource.com/#issues/116703-add-ability-to-restrict-ldap-authentication-to-a-security-group

just a bit of a pseudo-code version of doing it (untested): https://github.com/frimik/foreman/compare/863-ldap_group_restriction

The actual search method code was tested against Active Directory before I hackishly put this example in the Foreman code though as I recently built some puppet functions to get canonical user and group information from Active Directory with net-ldap.

Perhaps it can inspire someone to clean it up, make it work and add it as a configuration setting?

https://github.com/theforeman/foreman/pull/846