Explanation
Turn on Find My Mac in iCloud settings so you can locate, lock, or erase your Mac.
On your Mac, choose Apple menu > System Settings, then click [your name] at the top of the sidebar. ...
Click iCloud on the right, then click Find My Mac.
https://support.apple.com/guide/findmy-mac/set-up-fmm53101237/mac

Explanation:
Turn on firewall protection
On your Mac, choose Apple menu > System Settings, click Network in the sidebar, then click Firewall. (You may need to scroll down.) Turn on Firewall.https://support.apple.com/en-in/guide/mac-help/mh34041/mac#:~:
text=Turn%20on%20firewall%20protection,may%20need%20to%20scroll%20down.)&text=Turn%20on%
20Firewall.

Option C shows the screen that indicates that iPhone is in recovery mode and ready to be updated or restored.
This screen displays a cable and a computer icon, which means that you need to connect your iPhone to your computer and use iTunes or Finder to update or restore your device. This screen appears when you put your iPhone in recovery mode using the appropriate button combination for your model1. The other options show different screens that are not related to recovery mode. Option A shows the screen that appears when you turn on your iPhone and it is loading the software. Option B shows the screen that appears when you set up your iPhone for the first time or after a factory reset. Option D shows the screen that appears when you turn off your iPhone. References: If you can't update or restore your iPhone or iPod touch, Apple Support.