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WiNG_ How To Secure_Beacons - Overview

Friday, February 14, 2014 6:37 AM
The Secure Beacon feature allows the SSID name to be masked for a WLAN in the beacon so that MUs are unable to see or view the SSID. MUs discover WLAN services by listening to beacons advertised from APs. An AP will advertise a beacon (10 per second) for each WLAN service enabled on the radio which includes specific information about the WLAN service. Each beacon is forwarded in clear text and includes a Service Set Identifier (SSID) name for the WLAN. The SSID must be known by the MU before the MU can associate to the WLAN.
Applications:
In certain applications such as Hotspot guest access, it may be desirable to mask the SSID name to make it harder for casual eavesdroppers to discover the SSID and connect to the WLAN service. It is not recommended that secure beacon be used for real-time applications such a Voice that requiring fast roaming.
Restrictions:
The SSID name is not intended as a password and should not be used as such. If security is required the appropriate authentication and encryption should be used. While secure beacon can be used to mask the SSID in the beacon, the SSID name can still be discovered by monitoring probe response frames.
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