The term DDoS (Distributed Denial of Service) attack refers to the overloading of a server or a service, which is the goal of the attack, by sending a high amount of - often useless - requests, so that the server or the service is not able to fullfil its regular tasks anymore. The server or service is proverbially "blown away", it is not possible to reach it anymore via the Internet, for as long as the attack continues.
Unfortunately, DDoS attacks are gradually becoming a more common occurrence on the Internet. Servers of Contabo customers are becoming the target of such attacks more often aswell. Without an effective DDoS protection, servers under attack would not be available on the Internet for a prolonged time.
In order to protect our customers from such attacks and the accompanying availability problems as well as possible, Contabo has developed an in-house DDoS protection. This DDoS protection is free of charge for all of our customers, it is activated automatically for all servers and webspace packages in the Contabo data centers.
The Contabo DDoS protection is a security system which automatically detects most DDoS attack patterns and which filters the incoming traffic to the server so that the "malicious" attacking traffic is dropped and only the "real" desired traffic arrives at your server. This means that you, as a Contabo customer, will barely notice a possible attack while our DDoS protection filters the ongoing attack for you.
The Contabo DDoS protection was developed in a way that it recognizes 99% of all attack patterns which it will then filter. In all these cases your servers will stay online and available on the Internet, even if they are under attack.
Like every other DDoS protection which is used or offered on the Internet, the Contabo DDoS protection has its limits. Although our protection recognizes and filters 99% of all attack patterns, there are some DDoS attacks which can not be mitigated because of their pattern or sheer volume. The probability that your server is affected by attacks which our DDoS protection can not filter is very low. We also work continuously on further improving our protection system so that even attacks which we can not avert today will be recognized and filtered in the near future as well. Nonetheless, we ask for your understanding that the Contabo DDoS protection - like any other DDoS protection - represents no guarantee that your server system will be protected from every DDoS attack theoretically conceivable.
Nothing. Our DDoS protection is free of charge for all Contabo customers, it is activated automatically for all servers and webspace packets in the Contabo data centers. Both our existing customers and new customers have to do nothing, your uplink will be automatically and permanently guarded by our DDoS protection.