Raymii.org
Quis custodiet ipsos custodes?Home | About | All pages | Cluster Status | RSS Feed
OS X: Turn firewall on or off from the command line
Published: 10-05-2013 | Author: Remy van Elst | Text only version of this article
❗ This post is over eleven years old. It may no longer be up to date. Opinions may have changed.
This command lets you turn the build in OS X firewall on and off, on both for specific services or essential services. It works with OS X 10.5, 10.6, 10.7 and 10.8. It also works via Apple Remote Desktop.
Recently I removed all Google Ads from this site due to their invasive tracking, as well as Google Analytics. Please, if you found this content useful, consider a small donation using any of the options below. It means the world to me if you show your appreciation and you'll help pay the server costs:
GitHub Sponsorship
PCBWay referral link (You get $5, I get $20 after you've placed an order)
Digital Ocea referral link ($200 credit for 60 days. Spend $25 after your credit expires and I'll get $25!)
To turn the firewall off :
sudo defaults write /Library/Preferences/com.apple.alf globalstate -int 0
To turn the firewall on for specific applications/services :
sudo defaults write /Library/Preferences/com.apple.alf globalstate -int 1
To turn the firewall on for essential services like DHCP and ipsec, block all the rest :
sudo defaults write /Library/Preferences/com.apple.alf globalstate -int 2