Uma estratégia de monitoramento do tráfego de redes baseada em NetFlow/IPFIX

Abstract

The use of the Internet as a business tool is growing every year. More and more companies depend on resources available exclusively on the global network, and interruptions or delays in access can cause considerable loss of revenue. Considering the increasing demand for connectivity, availability and bandwidth, network management becomes an essential activity to ensure necessary conditions for network operation. In this scenario, the managing and planning must be based on several sources of information, and monitoring network usage is a rich source of information. Analyzing the existing technology for monitoring network usage, those based on flows (NetFlow / IPFIX) have been shown more efficient than other technologies, and open source applications to visualize network use are already available, providing detailed information on the origin and destination of transmissions. This work presents a case study of using of the Universidade Federal Fluminense (Niterói, Brasil) network, which is considered a WAN that serves, in addition to the campuses in Niterói, other cities in the estate of Rio de Janeiro such as Volta Redonda, Bom Jesus de Itabapoana, Rio das Ostras and also Oriximiná (Pará). Through this study, it was shown how information can be obtained from the flows monitoring and the importance of using this technology for ensuring quality and security of communications in computer networks.