Introduction
Back in November of 2008 I wrote about the Wi-Fi Protected Access (WPA) attack by the German graduate students Erik Tews and Martin Beck. They discovered a limited method to crack WPA, or more specifically, to crack [...]
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Many enterprises are considering Wi-Fi CERTIFIED™ 802.11n draft 2.0 deployment because it has significant advantages over existing wireless technologies. However, these advantages present the enterprise network manager with important deployment considerations. At the upcoming Burton Group Catalyst Conference in July, I will examine the various deployment considerations for 802.11n in the enterprise. Some of the topics I will discuss are listed below. Most existing 802.11 devices operate in a single frequency band, (e.g., 2.4 GHz or 5 GHz). 802.11n is different because it is specifically designed to operate in both the 5 GHz and the 2.4 GHz frequency bands. So 802.11n presents an opportunity for enterprises to reconsider which frequency band(s) to use. I will discuss some of the tradeoffs and issues enterprise managers need to consider. Continue reading My Catalyst conference presentation On December 3, 2008 I presented a talk entitled “Maintaining security as you upgrade to 802.11n” at the FinSec 2008 conference. My slides are [...]  Erik Tews German graduate students Erik Tews and Martin Beck discovered a limited method to crack WPA, or more specifically, to crack the TKIP component of WPA. Their paper describes the attack and their tkiptun-ng tool carries out the attack. WPA relies upon the old RC4 encryption algorithm from the infamous WEP protocol and uses TKIP as a “band-aid” to strengthen WEP encryption. WPA was intended as a way to secure existing WEP equipment without using a computationally intensive algorithm. This approach enabled existing hardware (access points and clients) to support WPA with a simple software upgrade. Continue reading WPA Hack |
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