Yao Chen Shantanu Das Pulak Dhar Abdulmotaleb El-Saddik Amiya Nayak Detecting and Preventing IP-spoofed Distributed DoS Attacks. 69-80 2008 7 I. J. Network Security 1 http://ijns.femto.com.tw/contents/ijns-v7-n1/ijns-2008-v7-n1-p69-80.pdf db/journals/ijnsec/ijnsec7.html#ChenDDEN08