Well, I want to mention first about the current private networking on DO, that's not what we want. Why?
1 - Because, we want our DB cluster "completely" isolated from public access.
While well as firewall or ifdown eth0 can do that, they do not provide any guarantees to mitigate DDOS attacks. So, when DDOS start to hit the server at big volume, the server will waste resource to mitigate the attack instead of working for its cluster. So, they should just be at BACK-END only, not mixed FRONT-END~BACK-END.
2- Let's assume, the first problem has resolved and we are happy with that.
What will happen if the attacker does DDOS inside DO datacenter? So, it's useful to mention once again here; there should be a private networking option which we can completely isolate our VPS from any other 3rd networks. I guess, it should not be too hard for you guys like writing a script that adds filters to internal switches the on DO datacenter.
To the back to the reason of the question, this mistakes on DO really seem that DO business area targets only small businesses and million dollar businesses.
But, to be honest, I love you DO :)
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