With cloud providers it's likely a "bad" IP will eventually get re-assigned to a "good" customer whom you don't want to block. That's why an exponentially incre

With cloud providers it's likely a "bad" IP will eventually get re-assigned to a "good" customer whom you don't want to block. That's why an exponentially increasing ban is generally a good idea, I think. The more abuse you get from a given IP address the longer you ban it each time. If it's use for a one-time attack and thrown away, you forgive it relatively quickly.