I'm not sure the "journos" from Techradar are too familiar with how networks ... work. IPv4 requires an inbound NAT these days to work at all globally, unless you actually have a machine with a globally routable IP. There will probably be a default deny firewall rule too. I do remember the days before NAT ... IPv6 doesn't require NAT (but prefix translation is available and so is ULA) but again a default deny is like…
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