CHAPTER 3
Devices and Ports
●The AirPort Extreme Base Station can authenticate users by their unique Ethernet IDs, preventing unauthorized computers from logging into your network. Network administrators can take advantage of RADIUS compatibility, used for authenticating users over a remote server. Smaller networks can offer the same security using a local look-up table located within the base station.
As an additional data security measure, VPN can be used in conjunction with the AirPort Extreme data security.
AirPort Extreme Hardware
AirPort Extreme is a fully-integrated, wireless LAN module based on the IEEE draft specification of the 802.11g standard using both OFDM (orthogonal frequency-division multiplexing) and DSSS technologies. Using DSSS, AirPort Extreme is interoperable with PC-compatible wireless LANs that conform to the 802.11b standard at speeds of 11 Mbps, 5.5 Mbps, 2 Mbps, and 1 Mbps. Using OFDM, AirPort Extreme is compatible with all 802.11g draft standard speeds.
Two antennas are built into the computer, on either side of the flat-panel display. One antenna is always used for transmitting. Either of the two antennas may be used for receiving. Using a diversity technique, AirPortExtreme may select the antenna that gives the best reception. The secondary antenna is used for Bluetooth.
AirPort Extreme Software
The PowerBook G4 17-inch computer includes software for setting up and using AirPort Extreme:
●AirPort Extreme Setup Assistant, an easy-to-use program that guides users through the steps necessary to set up AirPort Extreme or set up an AirPort Extreme Base Station.
●Users can switch between wireless networks and can create and join peer-to-peer networks. These functions are accessed via the AirPort Extreme status menu.
●AirPort Extreme Admin Utility, a utility for advanced users and system administrators. With it the user can edit the administrative and advanced settings needed for some advanced configurations.
Bluetooth Technology
Bluetooth is a fully integrated, open specification that enables short-range wireless connections between desktop and laptop computers and a host of other peripheral devices. Bluetooth support is built into Mac OS X and compliant with Bluetooth specification v1.1. It operates on a globally available 2.4 GHz frequency band (ISM band) for worldwide compatibility and has a maximum throughput of 1Mbps.
The Bluetooth technology supports the following profiles:
●synchronization —enables synchronization of devices over Bluetooth
●serial —provides a wireless serial connection to other Bluetooth devices
●dial-up networking (DUN) — enables a mobile phone to act as a modem
32Bluetooth Technology