Forcing Usage Rules in Public Wireless LANs

Lappeenranta University of Technology Department of Information Technology RADEK SPÁČIL Forcing Usage Rules in Public Wireless LANs Thesis for the Degree of Master of Science in Technology 2002 With rapid increase of popularity of wireless LANs and employing of this technology in large scale networks, a necessity of forcing usage rules arise. This thesis describes how to force users to follow usage rules in Public Wireless LANs. Problems discussed in the thesis are methods of revealing rogue DHCP servers and users using their own IP addresses, which are not issued by official DHCP server. Every methods considers also stopping such users to violate the usage rules. Central logging as a mean of acquisition of information necessary for these tasks is also addressed. The proposed solutions are custom made for the test network, but general ideas are applicable in any wireless or wired environment. Thesis contains 55 pages, 22 figures, 4 tables and 4 appendices Supervisor: JOUNI IKONEN, PhD. Examiner: Professor JAN VORÁČEK