In an attempt to improve site security, I would like to mask or hide urls in a Rails 3 application. I don't want "friendly" urls. I would prefer that just the domain be displayed in the browser address. I read that it is possible in rails 2 but not in rails 3. If that is true, what else can i do? 

UPDATE:
Is hiding ID's the best i can do? If so, what is the best method?

Thanks.