International Journal of Modern Engineering Research (IJMER)
Intrusion detection is the process of identifying activity that is malicious or unauthorized. The Intrusion Detection System (IDS) is designed to monitor for known attack signatures and sniff out suspicious behavior. Today's security infrastructure are becoming extremely complex, it includes firewalls, identification and authentication systems, access control product, virtual private networks, encryption products, virus scanners, and more. Failure of one of the above component of the authors' security infrastructure puts the system in risk which they are supposed to protect.