There is a contrib from dungog's website, I'm using smeserver-remoteuseraccess-1.2-2.noarch.rpm
It does chroot + other useful fonctions.
After installing the rpm, you can configure it by accessing the server-manager and going to "User Remote Acess" panel (security subcategory).
You must add some users first for the panel to work correctly (the admin cannot be modified and is not visible in this panel).
Hope it helped...