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Can my Instance Access Internet Without a Public IPv4 Address?

Yes. With NAT enabled, the Public Gateway shares its public IPv4 address (aka. Flexible IP) with the instances attached to the Private Network, so that they can access the Internet.

Moreover, the Public Gateway supports static NAT (aka. port forwarding), so that ingress traffic from the public Internet can reach instances on the private network. This works by mapping pre-defined ports of the public IP address of the gateway to specific ports and IP addresses on the private network.


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