I've to run 13 instances of a service which can only handle IPv4. Each service must be reachable via the exact same port from the internet. This is a limitation which I cannot get around because I do not have control over the other side of this service. Thus I need 13 public IPs. Unfortunately my provider is not willing to provide me with a /28 IPv4 subnet.
Now I was wondering if I could get around that by running a firewall in the cloud, setup a VPN and book the needed IPs in the cloud and expose the services via the VPN to the internet. Has anyone done something similar or got a better idea?
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