“What’s a firewall? In the simplest terms it’s hardware on your network or a piece of software on your computer that limits the way other computers can send data to or receive data from your Mac,” Jeffery Battersby explains for Macworld.
“While you can certainly spend money on firewall applications for your Mac,” Battersby writes, “your Mac, no surprise, already includes an excellent, built-in, free Application Level Firewall that, with minimal configuration, will do everything you need. So, why spend anything at all, when you can have great for free?”
“The beauty of Apple’s built-in Application Level Firewall is that you don’t need to do anything other than turn it on,” Battersby writes, “Your Mac will take care of determining whether or not an application should be allowed to send and receive network traffic.”
Read more in the full article here.
MacDailyNews Take: Is your Mac’s firewall on or off?