1 Modern DDoS Protection for Large Networks Challenge Over recent years, DDoS attacks have become especially worrisome to large high- speed network operators. Although this type of threat is nothing new and has been around for more than a decade, organizations are having increasingly hard time mitigating it. Why? Resources for initiating a DDoS attack are becoming more easily available, which means that the scale and frequency of the attacks are rapidly growing. The nature of a DDoS attack is such that if it is not detected before it reaches its target, the harm is done – and new inventive techniques to conceal the attacks emerge constantly, too. All mentioned considerations mean that volumetric attacks today are more likely to succeed, and that their effects are m

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