Hello, I'm an admin of Lost World project (www.l2lwg.com) and my server was attacked heavily by Stalone (l2tales, l2vadc) it was going down, a lot of dc and shit like that. Finally, I've found a solution, which costs: 
  
150 Euro / month 
50 Euro / 10 days 
  
I forgot to mention, that you can get 24 hours free trial, and free configuration on your LINUX. 
  
Now mostly I'm under attack with 120gbps - 170gbps UDP flood :ooo 
But server works perfectly, no delays, no disconnects. 
  
Provider gives 2 IP's, one for login, one for gameserver. 
It's a tunnel protection, so all players gonna have different IP's :) 
  
If you are interested in this kind of protection, contact to skype: L2LWG.com 
  
I'm not selling this protection, I'll just give you a person, who does that, and I will get a discount.