Re: Group authentification
So far I know - no - But you can always tune the permission so that only users of the group can see things
If you can modify the code
in lib/userslib.php
after $this->validate_user_ldap(
add somethinbg like that
$userGroups = $tikilib->get_user_groups($user);
and check if your group is in userGroups
Good luck