Does the Mac firewall need to be opened?

Does the Mac firewall need to be opened? Now more and more users use Mac computer, after we download the software will think how to register, sometimes we register the software when there will be firewall interference, this time how we disable the MAC firewall to activate the software? The following small part to tell you how to set up a Mac firewall.

1. Open System Preferences and click on "Security and privacy".

2. Open the "Firewall" option and click "Turn off Firewall".

Note: You may need to click the "Lock" button and enter a password to make changes.

3. Open the software you want to activate and reactivate it.

4. After successful activation, turn the firewall back on.