International Journal of Computer Science and Communication Networks (IJCSCN)
As the network based computer system plays an important role in modern society they have become target of the authors' enemies and criminals. Therefore, they need to find the best possible ways to protect their IT System. Different methods and algorithms are developed and proposed in recent years to improve intrusion detection systems. The most important issue in current systems is False Positive alarm rate. This is because current systems are poor at detecting novel anomaly attacks. These kinds of attacks refer to any action that significantly deviates from the normal behavior which is considered intrusion.