Wireless Sniffer

Abstract

Today’s society is continuously under very rapid development regarding most areas. With new technology, new possibilities start to take shape, but sometimes the fast technology development leaves gaps within itself. One of the gaps consists of lack of verification. This often occurs when the technology’s development rate is very high. One of those areas were the technology growth is increasing at a high rate is the vehicle industry. Electrical vehicles is constructed all over the world and characterize the industries future. Together with its appearance comes the digitalisation both within and around the vehicle. While the vehicle is moving, standing still or charging a lot of data is collected from it. Mostly this occurs wireless and can sometimes be unsecure or lack in quality. Some of this data don’t always reach its destination, this can be detected with the help of a third device, a sniffer. The systems which today diagnosis and verify data in the vehicle market are very expensive. Therefore investigation on how to construct a highly precise sniffer through different constructions on a Raspberry pi 3B+. The sniffer is supposed to analyze packets transmitted between client and server, the goal is to determine which setup the sniffer performs best with. The conclusion of the thesis is that the performance of Raspberry Pi internal network interface card(NIC) lack to function as a sniffer. With external NIC and antenna the ability to function as a sniffer are good at the lower data transfer rates, but at higher rates the ability decreases due to lack of the Rasberry:s internal hardware.