NAT is no longer a thing, all devices just have a globally unique IP. So your IP allow is a pretty strong indicator, it seems like that alone would make tracking easier.
There’s nothing in IPv6 to prevent tracking or offer more anonymity.
There’s nothing in IPv6 to prevent tracking or offer more anonymity.
If I accidentally run an SSH server where user 'root' and an empty password gives you root access, you still won't be able to get in.
Accidentally configuring port forwarding is a lot harder than accidentally disabling an on-host firewall.
You need a firewall for security, and NAT doesn't do anything in that regard other than make it harder to understand what's going on.