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Written by Devin Akin
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Saturday, 26 April 2008 |
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I was just thinking that if AT&T can screw people by charging them 20 cents EACH for receiving text messages they don't even want (usually from people they don't even know), then I'm sure someone is going to figure out how to do this on Wi-Fi soon enough. I can see it now, "ToWiFi" - holy crap.
This week, I was just reading an Aruba whitepaper that reiterates the need for a static site survey when legacy clients are participating in an 802.11n infrastructure. I also had conversations with several people who reiterated the Vocera and SpectraLink (now part of Polycom) don't support installations of their products when the controller is configured for "automatic power and channel assignments." Bottom line: static site surveys are here to stay for a good long time. |
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Written by Devin Akin
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Wednesday, 16 April 2008 |
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Good grief. How long must we wait for someone to write a decent book on 802.11n? From the various architectures to deployment strategies, there are dozens of small topics that need addressing. Many vendor whitepapers are proving to be so full of marketing that they aren't useful, and the market needs a "best practices" document for rolling out 802.11n. It would even be useful to cover additional topics such as how 802.11n affects VoWLAN deployments. |
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Written by Devin Akin
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Thursday, 10 April 2008 |
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It has officially started. Hacking 802.11n was inevitable of course, and now we have Denial of Service (DoS) and Service Degradation attacks aimed squarely at 802.11n networks. Using normal functions of the High Throughput (HT) PHY/MAC such as Block ACKs and coexistance (protection) mechanisms is a perfect place for a hacker to start because those features are required for proper operation. Here are some recent posts to the Wireless Vulnerabilities and Exploits website:
HT Intolerant Degradation of Service
http://www.wve.org/entries/show/WVE-2008-0004
GF Mode WIDS Rogue AP Evasion
http://www.wve.org/entries/show/WVE-2008-0005
Block ACK DoS
http://www.wve.org/entries/show/WVE-2008-0006 |
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