Puzzle Based Approach for Solving Denial of Service Attack in Mobile WIMAX

Abstract

Mobile WiMAX or IEEE 802.16e gives the access of Broadband Wireless even when the station is moving. But, as always Wireless environment is more open to threats; various threats exist over Mobile WiMAX like “Downgrade Attack”, “Key Space Vulnerability” and “Initial Network Vulnerability”, and “Denial of Service (DoS)”. In this paper we are proposing solution for one of the main Threat which is Denial of Service attack. Proposed solution is based on Puzzle approach. As, of more critical environment of MobileWiMAX we have Proposed use of Time Stamp and Nonce Variable for providing the more secure environment prone to DoS. As, DoS mainly exist in two forms which have been mentioned further, proposed work in Literature provides the solution for either of these but our proposed solution will be an attempt to overcome from