Indeed, it does nothing. NAT won't stop an inbound connection to your network. You already needed to use a firewall for that in v4. The type of NAT we're talki

Indeed, it does nothing. NAT won't stop an inbound connection to your network. You already needed to use a firewall for that in v4. The type of NAT we're talking about here *only* applies to outbound connections. It doesn't do anything at all to inbound connections.