Intrusion Detection System Based Ameliorated Technique of Pattern Matching

Abstract

Intrusion Detection System is a set of programs that overlook both internal & external network operations. These IDS disinter skeptic patterns that expose a system attack from external variables (Hackers, Organizations, Government etc). The main function of IDS is to monitor a system and uncover malicious activity by generating alerts. These alerts or warnings get reported to a security operations center (SOC) analyst or incident responder who then takes appropriate action to rectify the threats. It enhances stability, surveillance, integrity, etc. of the user's system by protecting the user from network infiltrations. The more intrusions IDS detects, the better the detection rate is. IDS works on the multi-pattern matching method which can compete with the line–speed of pocket transfer. This method efficiently handles a range of patterns with variable pattern lengths. This article presents an approach that ventures to exceed efficacy in comparison to earlier reports. It also indicates that the algorithm developed is inferior as the number of comparisons is less which leads to better time complexity. In particular, this algorithm attains a refined and uniform graph for all alphabet sizes.