This repository contains the source code of the entropy-based network traffic anomaly detector. It was developed as part of the activities of the research project "Performance Evaluation of Entropy-based Algorithms for Network Traffic Anomaly Detection in Cloud Computing Systems" at the Research Group of Convergent Networks (GPRC) from the Federal Institute of Education, Science and Technology of Paraíba, Campina Grande Campus, Paraíba, Brazil. The participants thank CNPQ agency for funding the project. Developers: Eduardo Jerônimo and Aleciano Lobo. Manager/Advisor: Ana Cristina Oliveira