In my school they use active directory to manage users that login to a number of things. That being the wireless network, the logins for the lab computers if you want to access a windows share that is mounted automatically. Plus this adds users to the email server (runs centos), and their ftp and ssh server (also runs centos). I want to know how to make linux server automatically add users to it's local user database when an active directory user is created, also so they can use the ssh, email and ftp server with the credentials that are in the active directory server. And if it's not too much to ask I also want it to add joomla users to my joomla interface as well. perhaps make it add users when they register through the joomla interface but this is only a bonus, I originally didn't want this part of the question but if you have any ideas you are free to express any ideas you may have.