Método agnóstico de detecção da quebra da neutralidade na internet pelos ISPs

Abstract

Nowadays the discussion about network neutrality is more and more necessary, many countries are debating norms and laws to establish how the data traffic must be treated by the ISP. In this context, it is important understand the techniques, motivations and the types of traffic discrimination that can be realized by the ISP. From this knowledge, this Master dissertation presents an agnostic method to detected the network neutrality breaking in a controlled environment. Being an agnostic method for neutrality breaking detection, independently of the protocol, application, service, packet size or any other information of the flow, this method works in the same way. Other important factor is the utilization of multiple performance metrics (latency, jitter, throughput and packet loss) to identify the neutrality breaking. The proposed method also is capable to distinguish between traffic discrimination and natural degradation forms. All the captured samples of each metric were transformed in an index with value between 0 (zero) and 1 (one), a simple statistic process (CEP) was used in the indexes transformation. To evaluate the method, a controlled environment was developed with four different scenarios. In these scenarios, the router simulates the configuration policies of an ISP. The simulations were of neutral traffic, with packet discarding, with traffic shaping and with the router delaying the packets. With the obtained results was possible evaluate that the proposed agnostic method demonstrated itself effective in all tested scenarios.