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A comment on Low-Cost VPS Testing. Parent comment

Re:Low-Cost VPS Testing by chimera77 on Sunday December 08, 2019 @02:02PM (#21737518)
Your Cloud SQL instance would have a public IP, but would not be exposed to the internet. All traffic is blocked by default. Only GCP service accounts with the right permissions can make connections to your SQL instance, or IPs added to a whitelist (not recommended).
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Re:Low-Cost VPS Testing by cstpdk on Tuesday December 10, 2019 @05:35AM (#21751303)
Ah, thanks for clearing that up, I was unaware. How is the traffic blocked by default? Firewall layer?
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Re:Low-Cost VPS Testing by helpfulgoogler on Tuesday December 10, 2019 @03:53PM (#21756737)
Yes. There is a proxy in front of the database which only allows whitelisted traffic (dangerous) or traffic with a valid cert (safe).
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