At university of Duke (Northern Carolina) network Wi-Fi has failed. The administrator was suprised - shit happens. Has restarted servers and hubs. Some time later all was again disconnected. Flashes on the Sun - administrator has thought and has again pressed on Reset. An hour later the call of the rector which was interested where Wi-Fi disappeared? The administrator began to sweat slowly. The administrator understood nothing, therefore has started log-files. And was stupefied.

Logs said, that someone has hacked DOS of university network from within. Who? Why? Brigade of IT specialists has started their brain processors.

They found out that 10-megabit wireless network was stopped by frequent signals on the requirement to give the MAC-address (the identifier of a network card). It is known, that Wi-Fi networks “remember” device address during some time. If gadget disconnect from a network, and then again to switch on, sometimes there is a reference to the old address, and new address does not give out. The university network has faced that some gadget with periodicity of 8,000 times in a second interrogates access points if the user from one zone of a signal has passed in another, but the MAC-address was not in time, will be nulled in memory of the device. The cause had appeared one student’s iPhone.

30 iPhones are capable to bring down any Wi-Fi a network in few seconds. It is some glitch of the equipment. In Apple the official report on a bug is already directed.

You know, what the most interesting in this story? Wi-Fi network of university of Duke has been constructed on equipment by Cisco.

Thanks to iPhones.ru

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