IceFloor 1.1

IceFloor uses Mac OS X built-in PF firewall. No kernel modules, no extensions, no pain.
IceFloor is free and open-source.lion firewall
the first OS X free graphic frontend for PF allows you to configure the PF firewall in a few clicks.

IceFloor is used only to configure the OS X buil-in PF firewall. You don't to keep IceFloor running because PF works in background.
the easy of use of NoobProof and the power of WaterRoof, all in one application
select the services you want to allow, choose lists of IP addresses to allow connections
create a black list to block incoming