Comment by devman0

> It's called a firewall. You want a firewall. IPv6 also has a firewall. NAT is not a firewall. NAT is usually configured as part of your firewall, but is not a firewall.

Expanding on this. NAT as deployed in most soho/residential settings requires a stateful firewall to track connections + port mapping logic.A stateful firewall is also used for IPv6 edge security and using the same basic posture (out allow, in established/related only) except the only difference is it isn't also doing an address mapping. Nobody is out there saying folks should run a wide open IPv6 edge, and as far as I'm aware no one is shipping IPv6 ready consumer routers that do that (but I'm prepared to be proven wrong in the responses).