developerWorks: Securing 802.11 Transmissions, Part 1

“Wi-Fi signals extend beyond the office–into neighboring
buildings, public areas, streets, and parking lots. Wi-Fi
enthusiasts have started mapping out the availability of these
Wi-Fi hotspots, along with their level of security. Generally
speaking, hotspots–even if they benefit the public and cater to
its curiosity with technology–are not giving Wi-Fi a good
reputation. Mainly because unsecured hotspots can be used to launch
attacks.

“Almost everyone has heard the stories of people driving around
businesses, using a WLAN card to access the Internet illegally, and
even in some cases, hacking unprotected corporate networks. Some
people have even been the victims of these intrusions themselves.
These experiences have made it clear that existing wireless LAN
deployments are not secure, especially if measures to protect
against unauthorized access are not taken…”

Complete Story