Why is my firewall not allowing droplet IPs to pass through the firewall?

Posted on December 16, 2022

I have setup a firewall for a Droplet-A. (Droplet A is an API and Droplet-W is a website - both running in docker containers). Everything works well when I setup the firewall and allow all IP4s and IP6s. Now I want to limit access to Droplet-A only to allow traffic coming from Droplet-W. I remove the “All IPS” and instead add the ipv4, Private Ips and Reserved Ips of Droplet-W to the sources column of the Https/Tcp/443 incoming firewall entry.

Now all traffic gets blocked - including the traffic from Droplet-W (which means that the web gets no data) Any ideas what I might be doing wrong here or forgetting … ?

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Bobby

December 19, 2022

Hi there,

Is Droplet-W also attached to the firewall? If this is the case you would then need to also configure your Outbound Rules to allow the outbound traffic for those ports.

If this is not the case, what you could do is add your Droplet-W to the source field directly rather than specifying the IP address explicitly. You can do that by typing the name in the source field directly and then selecting the Droplet from the list.

Let me know how it goes!

Best,

Bobby