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who the fuck even still has an exposed IPv4 address anyway, those are fucking expensive since we ran out. I couldn't expose my network if I tried.
Its free, so why the fuck not? Why the hassle with ddns, wich funnily enough is also free with my hoster/registra
Dynamic DNS has solved that for 20+ years. Just need a domain name, and a utility to update the IP when it changes.
That said, my IP hasn't changed in over 5 years now.
Dynamic DNS is useless if you're on CGNAT.
Still though, Dynamic DNS points to an external IP address, which you'd have your NAS exposed on a public port. This is the flaw in the design which allows remote execution of this exploit.
If you need remote access to the NAS, it should not be publicly exposed and should require a VPN to access. That way if there is an issue or misconfiguration, everyone on the internet can't exploit it easily.