A line of wireless cards and base stations created by Apple.

AirPort	Orinoco chipset, 802.11b. Supported in passive and active mode.
AirPort Extreme	Broadcom chipset, 802.11g. Also supported in passive and active mode.
AirPort Atheros	(not official name, it hasn't been given one yet) Atheros 5006x chipset, 802.11g (supports 802.11a, but the drivers and antenna don't) found in most of the Intel Macs (the Intel iMac had Broadcom, not sure if it still does?). Supported in passive mode in latest dev builds.

If your AirPort Extreme is not working follow these directions.

NOTE: These cards are severely limited in their functionality. Specifically:

• None of them support active attacks (deauthentication, flooding, raw packet injection).
• On Intel, AirPort / AirPort Extreme cards with Atheros chipsets (including the MacBook and MacBook Pro) the card cannot collect valid data or unique IVs as it attempts to decrypt packets in hardware with the wrong key.
• The Broadcom cards in Intel machines may or may not have the same problem, it's unclear.
• Broadcom cards are reported to have generally corrupt frames on any platform (they pass on corrupt frames that aren't properly checksummed).