Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Determination of Anomalies in Network Traffic Based on the Use of its Entropy Characteristics S.V. DANILKIN, P.I. KARASEV, M.S. EFANOV, SHAMSULDIN HAIDAR ABDULVAHHAB To date, information technology is integrated into almost all areas of activity, and every year this trend is growing. The consequence of this is a tremendous increase in the scale and complexity of building computer networks that process information. Thus, the use of information technologies in tasks that are critical from the point of view of information security (processing information of varying degrees of confi dentiality, etc.) in the context of the spread of large-scale network attacks should be accompanied by appropriate measures and means to ensure the protection of both processed information and systems. performing this processing. Keywords: network attack, intrusion detection, network traffic anomalies, anomaly detection, entropy analysis, network traffic, denial of service, network traffic modeling. DOI: 10.25791/pribor.3.2023.1392 Pp. 09-14.