Tsuyoshi Chiba Takashi Katoh Bhed Bahadur Bista Toyoo Takata DoS Packet Filter Using DNS Information. 116-131 2006 conf/aina/2006 AINA (1) http://doi.ieeecomputersociety.org/10.1109/AINA.2006.155 db/conf/aina/aina2006.html#ChibaKBT06