Networkintrusion Detection Has a Critical Section of Network Management Because of Thenumber of Attacks Persistently Threaten Our Computers. Network Intrusiondetection Systems Are Limited and Do Not Provide a Complete Solution For Theproblem. They Search For Potential Malicious Activities on Network Traffics;They Sometimes Succeed to Find True Security Attacks and Anomalies. However, Inmany Cases, They Fail to Detect Malicious Behaviours or They Fire Alarms Whennothing Wrong In the Network.