Jetpack Protect on multisite? | WordPress.org

Hi, looking to protect a multisite with the Jetpack WAF, I’m wondering if this is possible with Jetpack Protect and how.

Are all sites in the network are protected when a global auto_prepend_file is set and Jetpack Protect is only activated on the main site? Or does the plugin need to be activated on each subsite individually? If so, can de plugin be activated Network wide?

Thanks for any info ?