Comparison of machine learning and deep learning models for network intrusion detection systems

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Authors
Thapa, Niraj
Liu, Zhipeng
KC, Dukka B.
Gokaraju, Balakrishna
Roy, Kaushik
Issue Date
2020-09-30
Type
Article
Language
en_US
Keywords
CART , CIDDS , CNN , Deep learning , Ensemble , KNN , LSTM , Machine learning , Network intrusion detection , XGBoost
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Abstract

The development of robust anomaly-based network detection systems, which are preferred over static signal-based network intrusion, is vital for cybersecurity. The development of a flexible and dynamic security system is required to tackle the new attacks. Current intrusion detection systems (IDSs) suffer to attain both the high detection rate and low false alarm rate. To address this issue, in this paper, we propose an IDS using different machine learning (ML) and deep learning (DL) models. This paper presents a comparative analysis of different ML models and DL models on Coburg intrusion detection datasets (CIDDSs). First, we compare different ML-and DL-based models on the CIDDS dataset. Second, we propose an ensemble model that combines the best ML and DL models to achieve high-performance metrics. Finally, we benchmarked our best models with the CIC-IDS2017 dataset and compared them with state-of-the-art models. While the popular IDS datasets like KDD99 and NSL-KDD fail to represent the recent attacks and suffer from network biases, CIDDS, used in this research, encompasses labeled flow-based data in a simulated office environment with both updated attacks and normal usage. Furthermore, both accuracy and interpretability must be considered while implementing AI models. Both ML and DL models achieved an accuracy of 99% on the CIDDS dataset with a high detection rate, low false alarm rate, and relatively low training costs. Feature importance was also studied using the Classification and regression tree (CART) model. Our models performed well in 10-fold cross-validation and independent testing. CART and convolutional neural network (CNN) with embedding achieved slightly better performance on the CIC-IDS2017 dataset compared to previous models. Together, these results suggest that both ML and DL methods are robust and complementary techniques as an effective network intrusion detection system.

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© 2020 Authors. Published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. Reuse of an article does not imply endorsement by the authors or MDPI.
Citation
Thapa, N.; Liu, Z.; KC, D.B.; Gokaraju, B.; Roy, K. Comparison of Machine Learning and Deep Learning Models for Network Intrusion Detection Systems. Future Internet 2020, 12, 167
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MDPI AG
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DOI
ISSN
1999-5903
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