Assessment of Active Queue Management Algorithms by Using NS2 Simulator

摘要

Network security has become very important and foremost issue for the personal computer users, organizations, business and military. With the advent of internet, security has become the major concern. The main objective of this research is to simulate and analyze the effect of queuing algorithms RED and DROPTAIL with CPR on the TCP targeted LDDoS attack flows. LDDoS attack is more vulnerable to the network traffic than the classic DDoS attacks as they are difficult to identify. We use network simulator ns-2 to implement the network and investigate the behaviors of queuing algorithms in the network. The performance metrics of the comparison are average delay and packet drop. CPR based approach is used to detect and filter attacks. The test-bed experiments are conducted to analyze the performance of this approach which is compared to the existing DFT approach.