Disable Firewall on macOS

Mac’s Firewall settings can be found in the Security and Privacy preference in System Preferences.

To disable the Firewall in macOS and OS X v10.6 or later:

1. Go to System Preferences > Security & Privacy.
2. Click on the Firewall tab.
3. Click on the lock icon in the bottom left corner of the window and enter your administrator password.
4. Click Turn Off Firewall (or Start in OS X).

In v10.5 of OS X, the Firewall is enabled slightly differently:

1. Go to System Preferences > Security.
2. Click on the Firewall tab.