PFLists is a basic PF firewall frontend for OS X 10.7 and newer. The program is very easy and quick to set up. You can define groups of addresses, assign them a list of addresses and allowed services. In addition, you can filter inbound IPv4 and IPv6 connections. Furthermore, you have the ability to limit overall bandwidth for Internet connections and save startup scripts to load PF firewall rules at boot.
IPNetSentry is a simple and intelligent security application which protects your Mac from outside Internet intruders.
What you need if you are fed up with the irritating chime of your Macintosh at startup.
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