macOS User Guide
- Welcome
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- Change System Preferences
- Change your desktop picture
- Add your email and other accounts
- Use a screen saver
- Change the picture for you or others in apps
- Set up other users on your Mac
- Set up Screen Time for yourself
- Change the system language
- Make it easier to see what’s on the screen
- Use accessibility features
- Run Windows on your Mac
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- Use Continuity across your devices
- Stream audio and video with AirPlay
- Use your iPad as a second display
- Hand off between devices
- Insert photos and documents from iPhone or iPad
- Insert sketches from iPhone or iPad
- Copy and paste between devices
- Use Apple Watch to unlock your Mac
- Make and receive phone calls on your Mac
- Control accessories in your home
- Send files between devices with AirDrop
- Use AirPods with your Mac
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- Manage cookies and other website data in Safari
- Use Private Browsing in Safari
- View privacy reports in Safari
- Understand passwords
- Reset your Mac login password
- Use keychains to store passwords
- Set up your Mac to be secure
- Guard your privacy
- Use Sign in with Apple for apps and websites
- Protect your Mac from malware
- Control access to your camera
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Use stealth mode to keep your Mac more secure
If you’re concerned about security, you can use “stealth mode” to make it more difficult for hackers and malware to find your Mac. When stealth mode is turned on, your Mac doesn’t respond to either “ping” requests or connection attempts from a closed TCP or UDP network.
On your Mac, choose Apple menu > System Preferences, click Security & Privacy, then click Firewall.
If the lock at the bottom left is locked , click it to unlock the preference pane.
Click Firewall Options.
If the Firewall Options button is disabled, first click Turn On Firewall to turn on the firewall for your Mac. See Block connections to your Mac with a firewall.
Select “Enable stealth mode,” then click OK.
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