Is there an "authconfig" tool in ubuntu?

Hi everyone:

In redhat system there is a tool named "authconfig" which is used to configure user authentication method on clients. What I want to know is that is there a similar tool in ubuntu system? I am going to set up a group system and all client computers are running ubuntu linux.

I searched something use google, someone said that they are working on it. But the history of ubuntu is not short, someone must use some similar tools to change user authentication method on ubuntu.

Anyone knows something about it? Please let me know! Thanks in advance.