Using_ICMP_tunneling_to_steal_Internet
By secgeeks - Posted on January 28th, 2008
163
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The scenario is you are without Internet connectivity anywhere. You have found either an open wireless access pointed or perhaps you're staying in a hotel which permits rented Internet via services like Spectrum Interactive [1] (previously known as UKExplorer). You make the connection, whether its physically connecting the Ethernet cables, or instructing you're wireless adapter to lock onto the radio signal. You are prompted with some sort of authorization page when you open a browser. You don't have access to it, so what do you do?
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nice one..
there are other types also for covert channel tunneling.checkout grey-world site for more.