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Attacks and Counter Measures in 2.5G
and 3G Cellular IP Networks

This whitepaper assesses the issues still facing the industry since the
"GPRS Wireless Security: Not Ready for Primetime" paper was published in June 2002. GTP (GPRS Tunneling Protocol) is now widely deployed in a majority of 2.5G and 3.0G cellular networks, and this paper reviews some of the potential attacks against the GTP protocol and the possible effects this will have on cellular providers. It also reviews some of the architectural alternatives that providers can consider.

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