4.6 Review

A Survey of CNN-Based Network Intrusion Detection

Journal

APPLIED SCIENCES-BASEL
Volume 12, Issue 16, Pages -

Publisher

MDPI
DOI: 10.3390/app12168162

Keywords

convolutional neural network; CNN; network security; intrusion detection; deep learning

Funding

  1. Ministry of Higher Education Malaysia [LRGS-LR002-2020]
  2. Shiraz International School Shiraz, Iran

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With the advancement and widespread use of Internet applications in recent years, the need for securing Internet networks has increased. Intrusion detection systems (IDSs) employing artificial intelligence (AI) methods, particularly deep learning (DL) algorithms such as convolutional neural networks (CNNs), play a vital role in ensuring network security. However, there is a lack of comprehensive surveys on CNN-based IDS schemes.
Over the past few years, Internet applications have become more advanced and widely used. This has increased the need for Internet networks to be secured. Intrusion detection systems (IDSs), which employ artificial intelligence (AI) methods, are vital to ensuring network security. As a branch of AI, deep learning (DL) algorithms are now effectively applied in IDSs. Among deep learning neural networks, the convolutional neural network (CNN) is a well-known structure designed to process complex data. The CNN overcomes the typical limitations of conventional machine learning approaches and is mainly used in IDSs. Several CNN-based approaches are employed in IDSs to handle privacy issues and security threats. However, there are no comprehensive surveys of IDS schemes that have utilized CNN to the best of our knowledge. Hence, in this study, our primary focus is on CNN-based IDSs so as to increase our understanding of various uses of the CNN in detecting network intrusions, anomalies, and other types of attacks. This paper innovatively organizes the studied CNN-IDS approaches into multiple categories and describes their primary capabilities and contributions. The main features of these approaches, such as the dataset, architecture, input shape, evaluated metrics, performance, feature extraction, and classifier method, are compared. Because different datasets are used in CNN-IDS research, their experimental results are not comparable. Hence, this study also conducted an empirical experiment to compare different approaches based on standard datasets, and the comparative results are presented in detail.

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