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Using TLS Fingerprints for OS Identification in Encrypted Traffic

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LAŠTOVIČKA Martin ŠPAČEK Stanislav VELAN Petr ČELEDA Pavel

Druh Článek ve sborníku
Fakulta / Pracoviště MU

Ústav výpočetní techniky

Citace
Popis Asset identification plays a vital role in situational awareness building. However, the current trends in communication encryption and the emerging new protocols turn the well-known methods into a decline as they lose the necessary data to work correctly. In this paper, we examine the traffic patterns of the TLS protocol and its changes introduced in version 1.3. We train a machine learning model on TLS handshake parameters to identify the operating system of the client device and compare its results to well-known identification methods. We test the proposed method in a large wireless network. Our results show that precise operating system identification can be achieved in encrypted traffic of mobile devices and notebooks connected to the wireless network.
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