An optimised Darknet traffic detection system using modified locally connected CNN - BiLSTM network. (2nd June 2023)

• Record Type: Journal Article
• Authors: Shaikh, Abdullah Abdul Sattar; Bhargavi, M.S.; Kumar, C. Pavan
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 43:Number 2(2023)
• Page Start: 87
• Page End: 96
• Publication Date: 2023-06-02
• Subjects: Darknet -- deep learning -- convolutional neural network -- CNN -- bi-directional long short term memory -- BiLSTM; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

The contents of the darkweb have always been a major breach of security and privacy. Due to its anonymous nature, detection of traffic from Darknet becomes difficult. A robust classifier system that accurately predicts and classifies such traffic is a necessity. This research work aims to study the effects of the convolutional-long-short-term memory (CNN-LSTM) system of classification of Darknet through various deep layer modifications on the Nadam optimiser. Experimentations were carried out on different combinations of locally-connected CNNs (LcCNN) and bi-directional LSTM (BiLSTM) to improve accuracy. Data was subjected to various levels of synthetic minority oversampling techniques (SMOTE) to reduce overfitting, data imbalance and achieve better generalisation. A custom decaying call-back function implemented, cut down the learning rate by half and tended to improve accuracy. Results obtained outperformed the base CNN-LSTM system for traffic categorisation with an improved accuracy of 92.57% from 89% using the custom LcCNN-BiLSTM architecture.