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Structured and Unstructured Log Analysis as a Methods to Detect DDoS Attacks in SDN networks

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DOI: 10.23977/iotea.2021.060101 | Downloads: 21 | Views: 370

Author(s)

Nazar Peleh 1, Stanislav Zhuravel 1, Olha Shpur 1, Olha Rybytska 2

Affiliation(s)

1 Department of Telecommunication, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine
2 Department of Mathematics, Lviv Polytechnic National University S. Bandery str., 12, Lviv, Ukraine

Corresponding Author

Olha Shpur

ABSTRACT

In this paper, we proposed a method for detecting DDoS attacks in SDN networks. Since the SDN controller contains information about the network and can create rules for its proper functioning, we propose to configure the SDN controller to detect a possible DDoS attack by examining the session information based on information from logs and flow tables. The information from the logs will be transmitted to the Log Analysis Subsystem, where two independent analysis processes will be started. To achieve this goal, we divide session information into normal and abnormal using the entropy method. If traffic deviations are detected, which will indicate a DDoS attack, the Log Analysis Subsystem will transmit the information to the SDN controller, which will create a rule to block the harmful connection. To identify these connections, we suggest using the Kulbak-Labler approach to detect anomalies during the session so that the SDN controller can block the IP addresses suspected of a harmful connection.

KEYWORDS

Data analysis, log analysis, structured data, unstructured data, DDoS attacks, SDN

CITE THIS PAPER

Nazar Peleh, Stanislav Zhuravel, Olha Shpur and Olha Rybytska. Structured and Unstructured Log Analysis as a Methods to Detect DDoS Attacks in SDN networks. Internet of Things (IoT) and Engineering Applications (2021) 6: 1-9. DOI: http://dx.doi.org/10.23977/iotea.2021.060101.

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