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A comment on I spent a week without IPv4 to understand IPv6 transition mechanisms. Parent comment

Re:I spent a week without IPv4 to understand IPv6 transition... by hot_gril on Tuesday March 14, 2023 @04:56PM (#35158438)
NAT does nothing? The NAT setup is the reason incoming connections don't reach devices on the LAN. I get that you can phrase this as NAT actually being the thing forwarding the packets, and on a home ipv4 router without NAT the incoming packets would just go nowhere, but everyone is talking about the realistic options of NAT vs device having own public IP addr.

I get that an ipv6 router can have a firewall with good defaults blocking incoming connections, emulating that aspect of a NAT.

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Re:I spent a week without IPv4 to understand IPv6 transition... by Dagger2 on Thursday March 23, 2023 @05:00PM (#35281186)
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.

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