ComputingComputer EngineeringComputer ScienceComputer SecurityNetwork SecurityWireless SecurityDenial-of-service AttacksIntrusion DetectionWi-fi SecurityWireless Device SecurityWireless Network SecurityAnomaly Detection In Wireless NetworksMac Address SpoofingMac Address Spoofing DetectionNetwork Intrusion DetectionSpoofingSpoofing Attack DetectionSpoofing AttacksWireless Network Intrusion
An attacker wishing to disrupt a wireless network has a wide arsenal available to them. Many of these tools rely on using a faked MAC address, masquerading as an authorized wireless access point or as an authorized client. Using these tools, an attacker can launch denial of service attacks, bypass access control mechanisms, or falsely advertise services to wireless clients. This presents unique opportunities for attacks against wireless networks that are difficult to detect, since the attacker can present himself as an authorized client by using an altered MAC address. As nearly all wireless NICs permit changing their MAC address to an arbitrary value – through vendor-supplied drivers, open-source drivers or various application programming frameworks – it is trivial for an attacker to wreak havoc on a target wireless LAN. This paper describes some of the techniques attackers utilize to disrupt wireless networks through MAC address spoofing, demonstrated with captured traffic that was generated by the AirJack, FakeAP and Wellenreiter tools. Through the analysis of these traces, the author identifies techniques that can be employed to detect applications that are using spoofed MAC addresses. With this information, wireless equipment manufacturers could implement anomalybased intrusion detection systems capable of identifying MAC address spoofing to alert administrators of attacks against their networks.