My website is under constant attack and so far I could just cross my fingers and hope for the best.
With admin tools I'm stress free.
I can see where it comes from, block the country, the ip range or the ip.
I also had to deal with the support 2 or 3 times and they were very professional : very fast and they could help.
At first you might be surprised by the amount of options you have.
But it's not a problem as the documentation is one of the most complete I have ever read.
I am one of the most demanding person and I'm very satisfied with this extension.