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IceFloor IceFloor is a free and open source graphic interface for the OS X built-in PF network firewall. IceFloor is group based. Create groups and assign addresses, services and parameters to pass or block connections makes use of its own set of PF configuration files; default OS X PF configuration files in /etc are not modified by IceFloor start with IceFloor Wizard to create a basic PF configuration in a few mouse clicks use IceFloor interface to set up very complex and customized PF rulesets manage inbound and outbound connections with filtering and bandwidth rules for your Mac and NAT clients hide services using port knocking, list and block connections on the fly using Inspector create new configuration presets and easily switch between predefined and custom PF presets mix IceFloor PF rules with your custom PF rules, interact with external applications like sshguard share Internet connection using PF NAT, assign per-client filtering and bandwidth rules and redirections browse PF ruleset with the new PF Rules Browser, display filtering, bandwidth and NAT PF rules and pipes analyze PF logs with numerical and graphical statistics, enumerate remote hosts using stroke or nmap based GUI tools debug and test PF rulesets easily and quickly using the optional IceFloor Menulet IceFloor requires OS X 10.7 or later. Some features requires OS X 10.8 or later. Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.