Finally, some ISPs are deploying flood auto-detecting and auto-blocking technologies to help find traffic patterns...
of floods and thwart the attack before the ISP's customers notice. Ask your ISP what technologies they are using and emphasize your need for such protection.
To learn more about this attack, read this paper, http://www.isotf.org/news/DNS-Amplification-Attacks.pdf.
Dig Deeper on DDoS attack detection and prevention
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