With a small server farm at a hoster with great support and conditions, I worry about the increasing number of DDoS attacks against this hoster (not my web project, but other clients on the same location).

I have booked a redundant router and load balancer as managed service with this hoster to share the load with all the dedicated servers.

However, I was lost again today because another one's project was attacked with DDoS for hours :-(

Each hour means hundreds of dollars loss whenever my adserver and tracking is not reachable. Even time-out advertising have to be paid by me but can not be resold to my clients without the servers being available. All the time, the servers, the load and traffic is OK and health, but no chance to keep this stable/online if the hoster is vulnerable.

Anyone has ideas or suggestions how to protect - even against DDoS?