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FreeBSD WLAN Futures Sam Leffler Errno Consulting sam@errno.com
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Current FreeBSD WLAN Support 802.11b only Most users use Intersil-based devices (wi driver) Netbsd 802.11 layer for non-station mode No integrated support for 802.1x or other security mechanisms
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Realworld WLAN Support Multi-mode devices (11a/b, 11b/g, 11a/b/g) Commodity products ($100 for AP, $50 for Cardbus card) Main players are: Intersil, Broadcom, Atheros Intel wants a piece of the pie (Centrino)
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FreeBSD WLAN Futures Atheros support in the works for 6+ months Extend security mechanism in base system (802.1x, WPA) Provide functionality wireless developers want (AP, mesh networks, community wireless)
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Atheros Support Device driver Hardware Access Layer (HAL) to support all Atheros devices (5210, 5211, 5212, etc.) 802.11 layer rewrite for multi-mode devices Minor ifconfig, et. al. mods Only BSD system with a/b/g support
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WLAN Security 802.1x is “last generation technology” but necessary –Authenticator –Supplicant –Flawed WPA is “current technology” –Michael+TKIP instead of WEP –802.1x + EAP/TLS (or EAP/SSL) –Will morph into standard fare (802.11i)
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Other Functionality Good embedded development environment QOS/802.1q (?) support for applications like streaming video (Wi-Fi phones) Better bridging support: STP, encrypted neighbor links WDS Power-save mode
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“The Plan” Intersil and other firmware-based devices are dead ends; Atheros is the future Too few people, too much work; promote cooperation Other BSD groups are minor players; leverage cross-development with Linux
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Status Atheros driver close to production quality 802.11 multi-mode functionality mostly done (11g support to be completed) 802.11 rewrite 65% done
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