DYNAMIC ANT COLONY SYSTEM WITH THREE LEVEL UPDATE FEATURE SELECTION FOR INTRUSION DETECTION

Current era is known as the age of digital information and general mean of access to
this information is computer networks. The use of network technology also make in
formation insecure. Network intrusion detection systems play a vital role in network
security and provide ways for restricting the unauthorized use of information or data.
Internet security is one of the major issue in the current internet advancement. Con
fidentiality, Integrity, and Availability of the data are the major concern for the secure
systems. Intruder always try to breach the security of the systems by exploiting a num
ber of parameters. Intrusion Detection System (IDS) is designed to detect intrusions
in the data. Different detection methods have been used in these systems including
Signature-based and Anomaly-based. The signature-based detection method is good to
detect known attacks but it cannot detect novel attacks, as it only looks for signatures
in the data which are fed in its knowledge base. On the other hand, Anomaly-based
detection method is good to detect novel attacks, as it looks for exceptional patterns
in the data on the cost of high numbers of false positives.