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How To access droplet only from another droplet with firewall?
I use two droplets with Docker.
My first droplet A is my frontend app and it use nginx as proxy.
My second droplet B is my backend app and it use DOcker.
Now, i want to restrict my backend droplet by using DigitalOcean firewall but i cannot.
I put the IP address of my droplet frontend in firewall backend but it does not work.
how to do it please?
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