A novel hybrid automatic intrusion detection system using machine learning technique for anomalous detection based on traffic prediction

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Traffic classification is an automated technique that divides computer network traffic into several categories depending on different factors like protocol or port number. In a complicated context, traffic categorization is an important tool for network and system security. A monitoring system called intrusion detection looks for abnormal activity and sends out notifications. In order to safeguard a system from network-based attacks, Network Intrusion Detection Systems (NIDS) play a crucial role in monitoring and analyzing network traffic. Active and passive intrusion detection systems (IDS), network intrusion detection systems (NIDS), host intrusion detection systems (HIDS), knowledge-based (signature-based) IDS, and behaviorbased (anomaly-based) IDS are some of the numerous types of intrusion detection systems (IDS). Passive IDS is just designed to monitor and analyze network traffic behaviour and notify an operator of potential vulnerabilities and attacks, whereas Active IDS is also known as Intrusion Detection and Prevention System. A network’s malicious traffic is identified using a network-based intrusion detection system (NIDS). A host-based IDS monitors system activity and seeks for indications of abnormal behaviour. For networks with unidentified traffic, the intrusion detection system designed using flow and payload statistical characteristics and clustering approach needs additional clusters. The present intrusion detection system however is affected by false alarm rate, poor detection rate, imbalanced datasets and response time which lead to misclassification of intrusions in various scenarios. Hence, there is a requirement for developing an automated intrusion detection system that works well in different scenarios. The proposed system uses supervised and unsupervised intrusion detection and classification methods to increase the classification accuracy. To categorize the intrusions, dimensionality reduction strategies are used in conjunction with the classification procedure of logistic regression. Performance of intrusion detection system using PCA as dimensionality reduction algorithm has been evaluated with different classifiers such as Logistic Regression (LR), K-Nearest Neighbors (K-NN), Random Forest (RF), Support Vector Machine (Kernel SVM), Decision Tree (DT) using CIC IDS 2022 dataset. An automated way to detect intrusions has been proposed with cluster formation using adaptive weight butterfly optimization algorithm.