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Written by Devin Akin
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Sunday, 11 May 2008 |
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People are constantly asking me, "which 802.11n wireless access point or router should I buy for my home?" After questioning them about their needs, they tell me that they want the "good stuff" - not the usual SOHO fare. Of course, the "usual" is Linksys, DLink, NetGear, TrendNet, Belkin, and a few others. There's nothing in particular wrong with equipment from any of these vendors, and most people are perfectly fine using it in their homes or small businesses. But there's a few telecommuters and small business owners that don't mind paying a little extra for something more feature rich and reliable. The problem is that there is no such thing. I have a suggestion. |
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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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Written by Devin Akin
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Thursday, 03 April 2008 |
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How many times have you visited a small business where the owner or manager is trying to play "techie" due to the high costs of hiring consultants? To make matters worse, this person also thinks he has a solid grasp on network fundamentals. He calls you to come have a look at a 'seemingly random, but minor' network problem because he met you 10 years ago for 20 seconds at a seminar you don't even remember attending.
You oblige of course, and... |
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Written by Devin Akin
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Thursday, 20 March 2008 |
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This article is presented as part of hacking + solution track for Wireless Security Expo 2008. Before reading the solutions article, make sure you have watched the hacking video. Videos are available by registering here . Cracking WEP is old-hat, but the newer WPA/WPA2-Personal can be cracked too. See how its done and see how to secure against it. |
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Non-line-of-sight, circular polarization... 
