DDoS protection is never possible.
There are things that will moniter it yes, but imagine you have a large botnet, over 5k people, its going to be hard to block them all.
Your kind of an idiot /facepalm
5k is not even alot. Maybe if they were 100mbit nix boxes, but even still would not touch gige. Go read about gige servers before you post kthx bai