This work aims to research and analyze network flow intrusiondetection using seven machine learning algorithms.A classic offline literature database (UNSW-NB15) was usedfor the computer simulation. In general, the algorithms obtainedsatisfactory results regarding the values of the metricsused and the computational time spent, contributing tothe mitigation of cyberattacks on computer networks, whoserelevance is essential for the security of computer systems.Este trabalho tem como objetivo a pesquisa e an´alise dedetec¸c˜ao de intrus˜ao em fluxo de rede utilizando nove algoritmosde aprendizado de m´aquina. Foi utilizada umacl´assica base de dados offline da literatura (UNSW-NB15)para a simula¸c˜ao computacional. Em geral, os algoritmosobtiver...