Why don't you just use a single User Manager which returns a different FileSystem 'Root folder' depending on the group the user belongs to?
2012/8/28 Niklas Gustavsson <nik...@protocol7.com> > On Tue, Aug 28, 2012 at 7:43 PM, Mauro Asprea <mauroasp...@gmail.com> > wrote: > > There is a maximum number of Listeners (eg: ports) that I can have > > available? > > No hard limit, except for the number of available ports (and > memory/CPU resources). > > /niklas >