The parameters of performance evaluation considered for this experiment were the Processor utilization and the NonPaged Pool Allocations in the main memory. NonPaged Pool allocs are those pages that can never be paged out of the system as these are Kernel functions and device drivers that in particular require real memory and should be present always for execution of a process [8,9]. During the experiment, the needed performance metric values were logged by the system under attack for analysis purposes by using some of the system activity commands. The logs were the performance counters available in the system. The Ping Flood, Smurf Attack, ICMP Land, TCP-SYN Flood, ARP Flood and UDP Flood at-tacks are performed on McAfee under that was installed on Windows XP and the results are as shown in Section 3.