macOS Adaptive Firewall

After that last post on enabling SSH back to my iMac, I realized I should do a little more research into security precautions. I stumbled onto information about the macOS Server Adaptive Firewall.

Enabling it couldn’t be much easier. It’s two commands; first to self-configure, and then to start the firewall:

sudo /Applications/ -c
sudo /Applications/ -f has a more thorough explanation of how to use the Adaptive Firewall, but I feel a little better knowing it’s running.