Firewall can effectively protect your Mac computer from unauthorized network access。Here are the steps to turn on and configure the firewall on your Mac computer。
step one：Open system preferences
1.Click the Apple icon in the upper left corner of the screen，Select "System Preferences"。
Step 2：Go to Security & Privacy
2.in system preferences，Click "Security & Privacy"。
Step 3：Unlock settings
3.Click the lock icon in the lower left corner，and enter the administrator password to unlock settings。
Step 4：open firewall
4.Select the Firewall tab，Click the "Turn on firewall" button。
Step 5：Configure firewall
5.Click the "Firewall Options..." button，Make further configuration。You can choose to allow or block network connections for specific applications。
Step 6：Complete setup
6.After configuration is completed，Click "OK" to save settings。
Summarize
Go through the above steps，You can easily turn on and configure your Mac computer’s firewall，Enhance system security。
