Safer Internet: Connection: Use a Firewall

Summary | Built-in Software | Block Ports | Other Software |
References: General | macOS | Windows


Summary

[1] Enable your device's built-in software firewall

  • iOS: not necessary
  • macOS: System Preferences > Security & Privacy > Firewall > Turn On
    [screenshot] you'll need to click the lock and provide your admin password
  • macOS: {Figure 9. TCYOP-4: 76; TCYOP-3: 62}; Win: {Figure 8. TCYOP-4: 75; TCYOP-3: 61}

[2] Block/unblock specific ports/services

  • macOS: System Preferences > Security & Privacy > Firewall > Firewall Options [screenshot]

[3] Install 3rd party software

References

macOS

Win