iPadOS and iOS do not come with firewalls and do not need one.
This is the #1 most controversial Government takedown that has been talked about for the last 2-years.
Unlike Windows and MacOS, iPadOS and iOS are severely locked down when it comes to malwares, hacks and glitches...etc. This is why Apple commands a 30% App store fee. No user can install anything outside the App Store [and hopefully never will]
While Apple does issues security updates, the issues that have come up require a physical action by the users or physical access to the device [ie, text message scams or email] The general public is unaffected
It is next to impossible to infect an iPad or iPhone. So, why is this so controversial.
The US Gov't as well as the EU do not accept that Apple devices have close to NSA level encryption and demand that the OS is gutted and opened for everyone. Posing the largest security risk in tech history.
If this becomes a reality, then Yes. MacAfee antivirus will "enter the chat"