For example, Cisco Aironet 1100 Series APs are "fat" because they operate autonomously as members of a decentralized...
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WLAN. Cisco (Airespace) Aironet 1000 Series Lightweight Access Points are "thin" because they require provisioning and supervision by a Cisco WLAN Controller -- together, these elements for a centralized WLAN. Some APs (e.g., Aironet 1200 Series) can be used in either WLAN architecture.
How can centralized WLAN architecture improve wireless network security?
As products mature, you can expect more security features that take advantage of this architecture, like more selective offloading of security processing to facilitate secure roaming, use of monitor-only APs as Wireless Intrusion Sensors, and more sophisticated security event analysis and automated response as management systems learn to do more with the information and interfaces they have at their disposal.
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