The ABCs of WPA2 Wireless LAN Security
Looking for more secure Wi-Fi? WPA2 (Wi-Fi Protected Access 2) gives wireless networks both confidentiality and data integrity, two terms not previously associated with Wi-Fi. Security, of course, has long been the trade-off with Wi-Fi. Early wireless networks leaned heavily on VPNs to provide Layer 3 security, which--aside from the additional overhead of encapsulation and the challenges of roaming, quality of service, client support and scalability--left the IP network vulnerable to attacks. The Layer 2-based WPA2 better protects the network.
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