Análise de vulnerabilidades em protocolos de segurança em redes sem fio domésticas e comerciais de pequeno porte

Abstract

The use of wireless technology over the years has been increasingly greater and its evolution is increasingly clear through portable and electronic devices such as notebooks, smartphones, tablets, Smartv, smart home systems, personal assistance devices, and even appliances that were previously unthinkable to have an internet connection. Today it is possible to have connections for appliances such as refrigerator, stove, and others. Wireless networks have been widely used in domestic and corporate environments, both for the purpose of saving cabling infrastructure and allowing greater portability and flexibility for local networks. However, in return, it requires some additional security concerns that are intrinsic to a wireless medium. Due to the importance of data circulating on wireless networks, information security is an issue of great relevance for these networks, whether they are domestic or corporate. Our work seeks to analyze certain protocols and even configurations used in this type of network with the purpose of showing some types of attacks and weaknesses related to the security of wireless networks, emphasizing the IEEE 802.11 standard (IEEE 802.11b, IEEE 802.11g, IEEE 802.11n). In the tests carried out, sniffer, deauthentication, dictionary, handshake capture, PMKID, brute force attacks were performed, among others, which were successful with the use of tools such as AirCrack-ng, Wifite2, Bettercap, Hashcat to exploit their respective vulnerabilities.