This is entirely untrue. Every shitty router shipped by ISPs this side of the doctom bubble has a stateful firewall enabled by default. NAT is distinctly not the only thing protecting most home users. Not to mention every OS I know of shipping with its own firewall enabled with default deny on inbound.

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xl-brain 4 hours ago | parent [-]

You are stuck on the theory of what is protecting this population. In practice, less than 1% of these users can or will turn NAT off.

Can you imagine how great things would work out with a public IP on all your nana's computers, NAT turned off, protected by the prowess of her Arris gateway's stateful firewall?

	▲	mrsssnake 3 hours ago \| parent [-]
		With NAT turned on nana's computer is still protected by the same Arris gateway.