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Home / Graduate / M.S. Theses Completed
  Betül Turgut, 2003    

Thesis Title

An AAA based solution for the authentication interoperability of 3G and 802.11 networks


Third Generation mobile telecommunications systems enable multimedia services combining the growth in mobile communications with the growth of the Internet. On the other hand, Wireless Local Area Networks (WLAN) are easy to implement, cheaper to construct and provides high speed services compared with other wireless technologies. In order to achieve access independence and to maintain a smooth interoperation with wireline and wireless terminals across the Internet, security is an important issue that must be handled. One step to achieve interoperability is to provide secure interoperability between the 802.11 WLAN and 3G networks. Although both systems have authentication mechanisms in their own domain, there is not a single mechanism that provides seamless authentication between two domains. In this thesis, an Authentication-Authorization-Accounting (AAA) based authentication mechanism is presented between 3G networks and 802.11 networks. The proposed solution for the authentication interoperability problem between 3G and 802.11 networks provides seamless authentication between two domains using the existing authentication mechanisms in each domain and provides a way for distributing session key and encryption algorithm between 3G and 802.11 networks.
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