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Deep Learning has been widely applied to problems in detecting various network attacks. However, no cases on network security have shown applications of various deep learning algorithms in real-time services beyond experimental conditions. Moreover, owing to the integration of high-performance computing, it is necessary to apply systems that can handle large-scale traffic. Given the rapid evolution of web-attacks, we implemented and applied our Artificial Intelligence-based Intrusion Detection System (AI-IDS). We propose an optimal convolutional neural network and long short-term memory network (CNN-LSTM) model, normalized UTF-8 character encoding for Spatial Feature Learning (SFL) to adequately extract the characteristics of real-time HTTP traffic without encryption, calculating entropy, and compression. We demonstrated its excellence through repeated experiments on two public datasets (CSIC-2010, CICIDS2017) and fixed real-time data. By training payloads that analyzed true or false positives with a labeling tool, AI-IDS distinguishes sophisticated attacks, such as unknown patterns, encoded or obfuscated attacks from benign traffic. It is a flexible and scalable system that is implemented based on Docker images, separating user-defined functions by independent images. It also helps to write and improve Snort rules for signature-based IDS based on newly identified patterns. As the model calculates the malicious probability by continuous training, it could accurately analyze unknown web-attacks.
Kim et al. (Wed,) studied this question.