Mrs KarpagaPriya.P1 , Mrs Selvi.U. 2016. “Passive IP Traceback: Tracing Spoofer IP and Blocking IP Spoofer from Data Access Using Greedy Algorithm”. International Journal of Emerging Trends in Science and Technology 3 (06), 4119-31. http://igmpublication.org/ijetst.in/index.php/ijetst/article/view/1112.