Many internet users don't even know what the word firewall means. And there are a lot of devices with unpatched software. Obviously NAT shouldn't be seen as a f

Many internet users don't even know what the word firewall means. And there are a lot of devices with unpatched software. Obviously NAT shouldn't be seen as a firewall, but for many consumers it's pretty much the only line of defense. I don't know if ISPs without NATs automatically deploy firewalls, but would hope so. IPV6 is harder to scan, but once you know a device's IP address (e.g. from web logs), it'd be easy to exploit older devices.