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Wireless Intrusion Detection - Sharkfest - Wireshark

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Fake saturation<br />

• 802.11 uses CSMC/CA – unlike shared Ethernet,<br />

actively tries to avoid collisions<br />

• “I'm going to transmit for 500ms, everyone else stay<br />

quiet”<br />

• Attacker can saturate with spoofed RTS packets<br />

• No-one will talk but channel will be idle!<br />

28

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