International Journal of Computer Applications
Intrusion is a fast growing security threat to the computers which fails the security of the system. The researchers have proposed number of techniques such as firewall, encryption etc. to prevent such penetration and protect the systems. With all these measures also, the intruders managed to penetrate the computers. Intrusion Detection Systems (IDS) monitor the resources of the computer, detect the malicious/suspicious activity either on a single machine or on the network which is different from the legitimate user activity and send the reports of such activity.