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Reactive jamming nodes are the nodes of the network that get compromised and become the source of jamming attacks. They assume to know any shared secrets and protocols used in the networks. Thus, they can jam very effectively and are very stealthy. We propose a novel framework for identifying the reactive jamming nodes in wireless LAN (WLAN). We rely on the half-duplex nature of nodes: they cannot...
We consider the problem of identifying insider-based attacks in the form of jammers in multi-channel wireless networks, where jammers have the inside knowledge of frequency hopping patterns and any protocols used in the wireless network. We propose a novel technique, called "alibi'', to identify the insider-based jammers in multi-channel wireless networks. Alibi is a form of defense whereby a...
We consider the problem of identifying the insider-based attacks in the form of jammers in a single-hop wireless network, where jammers have the inside knowledge of frequency hopping patterns and any protocols used in the wireless network. We propose a novel technique, called ??alibi??, to identify the insider-based jammers in multi-channel wireless networks. Alibi is a form of defense whereby a defendant...
The diversity provided by frequency-hop (FH) signaling can protect against jamming and multiple access interference (MAI). A FH transmission consists of two parts - an acquisition preamble and a data payload. The acquisition preamble allows the receiver to detect and synchronize with an incoming packet. Acquisition must be at least as robust as demodulation and decoding. If acquisition fails, the...
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