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Cisco's seven hard luck happenings in '07

Cisco's seven hard luck happenings in '07

By:  Linda Leung  On: 26 Dec 2007 For: Network World (U.S.) Creator

A look bad at some unfortunate occurances for the networking management giant

On July 14, Network World reported that the Wi-Fi connection on Apple's iPhone appeared to be the source of a big headache for network administrators at Duke University. Network administrators there witnessed dozens of access points being knocked out as the devices were flooded with 180,000 requests per second from Apple's mobile device. The story ignited a tidal wave of interest among IT professionals and bloggers on the Internet.

On July 20, Cisco confirmed the problem was caused by a Cisco network issue and later that month, it issued a security advisory detailing what caused the address storms. According to the advisory, Cisco's wireless LAN controllers have "multiple vulnerabilities in the handling of Address Resolution Protocol (ARP) packets." These vulnerabilities "could result in a denial of service (DoS) in certain environments." The vendor offered free software to patch this problem, and noted that "there are workarounds to mitigate the effects of these vulnerabilities."










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Linda Leung Linda Leung is a contributor to the International Data Group (IDG) News Service, which publishes global technology stories from bureaus around the world to more than 300 publications in more than 60 countries.

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