AirPort Express Setup Guide

Contents

16 Chapter 1: Getting Started About AirPort Express About the AirPort Software What You Need to Get Started Plugging In AirPort Express AirPort Express Status Lights Whats Next
Chapter 2: Using AirPort Express Using AirPort Express with Your Broadband Internet Service Using AirPort Express with AirTunes to Play iTunes Music on Your Stereo Using AirPort Express on an Existing Wireless Network to Stream Music to Your Home Stereo 21 Using AirPort Express to Share a USB Printer 22 Extending the Range of an Existing AirPort Extreme or AirPort Express Network 24 Using AirPort Express with Your AirPort Extreme Network 25 Chapter 3: Setting Up AirPort Express 27 Using the AirPort Utility 29 Creating a New Wireless Network
29 Configuring and Sharing Internet Access 30 Connecting to an Existing Wireless Network 31 Extending the Range of an Existing AirPort Extreme or AirPort Express Network 32 Setting Advanced Options 35 Chapter 4: AirPort Express on the Road 39 Chapter 5: Tips and Troubleshooting 44 AirPort Express Placement Considerations 45 Items That Can Cause Interference with AirPort Chapter 6: Learning More, Service, and Support Online Resources Onscreen Help Obtaining Warranty Service Finding the Serial Number of Your AirPort Express Appendix: AirPort Express Specifications AirPort Express Safety Tips Avoid Wet Locations Do Not Make Repairs Yourself About Handling
53 Regulatory Compliance Information

Getting Started

Congratulations on purchasing AirPort Express. Read this guide to get started using it.
You can use AirPort Express to share your broadband Internet access with wireless computers on your network, play iTunes music on your home stereo, and much more. Your AirPort Express comes with AirTunes, a way to play iTunes music through remote speakers. With AirPort Express, you can: Create a wireless network in your home, and then connect to the Internet and share the connection with up to ten computers simultaneously. An entire family can be connected to the Internet at the same time. Connect AirPort Express to your home stereo or powered speakers and use AirTunes to play your iTunes music on your home stereo from a Macintosh with an AirPort or AirPort Extreme Card, or a compatible Windows XP or Windows 2000 wireless computer. Set up a wireless connection to your Ethernet network. AirPort and AirPort Extremeequipped Macintosh computers or Windows XP or Windows 2000 computers can then have access to an entire network without being connected with a cable.
Extend the range of your network by adding AirPort Express to your existing AirPort Extreme or AirPort Express wireless network (this is called a Wireless Distribution System, or WDS). Connect a USB printer to your AirPort Express. All of the compatible computers on the AirPort network, both wireless and wired, can print to it. Create custom profiles so that you can store settings for up to five different locations. Take AirPort Express with you on the road, and quickly connect to broadband networks, such as in a hotel room.

About AirPort Express

AirPort Express has three ports, located on the bottom side: Ethernet port (G) for connecting a DSL or cable modem, or for connecting to an existing Ethernet network Analog and optical digital audio stereo mini-jack (-) for connecting AirPort Express to a home stereo or powered speakers
Chapter 1 Getting Started
USB port (d) for connecting a compatible printer to AirPort Express

Status light

AC plug adapter USB port Reset button

Ethernet port

Line Out port (Analog and optical digital audio mini-jack)
Next to the ports is a reset button, which is used for troubleshooting your AirPort Express. The status light on the side of AirPort Express shows the current status.
About the AirPort Software
AirPort Express works with the AirPort software included on the AirPort Express CD.
AirPort Utility AirPort Utility helps you set up your AirPort Express to create a wireless network, connect to the Internet, and share a USB printer. You can also connect your AirPort Express to your existing AirPort Express or AirPort Extreme wireless network to extend the range of your network using WDS. Use AirPort Utility to quickly and easily set up your AirPort Express and your wireless network. AirPort Utility is also an advanced tool for setting up and managing AirPort Extreme and AirPort Express Base Stations. Use AirPort Utility to adjust network, routing, and security settings and other advanced options.
AirPort status menu in the menu bar Use the AirPort status menu to switch quickly between AirPort networks, monitor the signal quality of the current network, create a Computer-to-Computer network, and turn AirPort on and off. The status menu is available on computers using Mac OS X.

What You Need to Get Started
To set up AirPort Express using a Macintosh, you must have the following: A Macintosh computer with an AirPort or AirPort Extreme Card installed Mac OS X v10.4 or later
To set up AirPort Express using a Windows PC, you must have the following: A Windows PC with 300 MHz or higher processor speed Windows XP Home or Professional You need iTunes to play audio from your computer to a stereo connected to AirPort Express. To be sure you have the latest version of iTunes, go to www.apple.com/itunes. You can use AirPort Express with any wireless-enabled computer that is compliant with the IEEE 802.11b or 802.11g standards. To set up AirPort Express, your computer must meet the requirements listed above.
Plugging In AirPort Express
Before you plug in your AirPort Express, first connect the appropriate cables to the ports you want to use, including the Ethernet cable connected to your DSL or cable modem (if you will connect to the Internet), the audio cable connected to your stereo (if you will use AirTunes to play music from iTunes), and a USB cable connected to a compatible USB printer (if you will print to a USB printer). After you have connected the cables for all the devices you plan to use, connect the AC plug adapter if necessary. Plug AirPort Express into the wall. There is no on switch.

AC plug adapter

When you plug AirPort Express into the wall, the status light flashes green and then glows amber while it starts up. After it has started up completely, the status light glows solid green.
AirPort Express Status Lights
The following table explains AirPort Express light sequences and what they indicate.
Light Off Flashing green Status/description AirPort Express is unplugged. AirPort Express is starting up. Note: If you choose Flash On Activity from the Status Light popup menu in the Base Station pane of AirPort settings in AirPort Utility, the status light may flash green to indicate normal activity. AirPort Express is on and working properly. If you choose Flash On Activity from the Status Light pop-up menu in the Base Station pane of AirPort Utility, the status light may flash green to indicate normal activity. AirPort Express cannot establish a connection to the network or the Internet. See Your AirPort Express Status Light Flashes Amber on page 42. AirPort Express is completing its startup sequence. There may be a problem starting up. AirPort Express will restart and try again.

Solid green

Flashing amber
Solid amber Flashing amber and green

Whats Next

After you plug in AirPort Express, you use AirPort Utility to set it up to work with your Internet connection, stereo, USB printer, or existing network. See Using AirPort Express on page 13 for examples of all the ways you can use AirPort Express, and information about how to set up your wireless network. Then see Setting Up AirPort Express on page 25 to find out more about the setup process.

Using AirPort Express

In this chapter youll find explanations of the different ways you can use AirPort Express.
This chapter gives examples of how your setup might look, depending on how you use AirPort Express. It also gives a brief explanation of what you need to do to get your AirPort Express network up and running quickly.
Using AirPort Express with Your Broadband Internet Service
When you set up AirPort Express to provide network and Internet access, Macintosh computers with AirPort and AirPort Extreme Cards and 802.11b and 802.11g wirelessequipped computers can access the wireless AirPort network to share files, play games, and use Internet applications such as web browsers and email applications.

What It Looks Like

DSL or cable modem

G Ethernet port

to Internet
How to Set It Up 1 Connect your DSL or cable modem to your AirPort Express using the Ethernet port (G). 2 Use AirPort Utility to create a new network. (See page 25 for more information.) Computers using AirPort and computers using other wireless cards or adapters connect to the Internet through AirPort Express. Wireless computers communicate with each other through AirPort Express.
Chapter 2 Using AirPort Express
Using AirPort Express with AirTunes to Play iTunes Music on Your Stereo
You can connect your AirPort Express to your stereo with a Toslink-to-mini digital fiber optic cable or a mini-stereo-to-dual-RCA cable, or mini-stereo to mini-stereo cable, depending on what type of connectors your stereo uses, and use AirTunes to wirelessly play music from iTunes. What It Looks Like
Optical digital audio input port RCA-type left and right audio input ports

Computer with iTunes

Line Out port
Stereo receiver Toslink-to-mini digital fiber optic cable or Mini-stereo-to-RCA cable
How to Set It Up 1 Connect your AirPort Express to your home stereo or powered speakers using a digital fiber optic cable, analog mini-stereo-to-dual-RCA, or mini-stereo to mini-stereo (depending on what type of connectors your stereo uses) connected to the stereo mini-jack (-). Note: You cannot use powered USB speakers with AirPort Express. Use powered speakers with a stereo mini-jack connector. 2 Use AirPort Utility to create a new network. (See page 25 for more information.) 3 Open iTunes on your computer and choose your stereo or speakers from the speakers pop-up menu in the lower-right corner of the iTunes window. Wireless computers within range of AirPort Express can wirelessly stream music to it using iTunes 4.6 or later. Only one computer at a time can stream music to AirPort Express. You cannot stream music to more than one AirPort Express at a time. Note: Do not connect AirPort Express to the phono jack on your stereo.
Using AirPort Express on an Existing Wireless Network to Stream Music to Your Home Stereo
You can also connect AirPort Express to a wireless network and use AirTunes to play music on your stereo from iTunes. Connecting AirPort Express to your existing network allows you to place AirPort Express in another room, within range of your network.
AirPort Extreme Base Station DSL or cable modem
to Internet Line Out port

Stereo receiver

to Ethernet port
To join the wireless network, use the AirPort status menu in the menu bar on a Macintosh. On a Windows computer, hold the pointer over the wireless connection icon until you see your AirPort network name (SSID), and choose it from the list if there are multiple networks available.
There are also other ways you can connect your AirPort Express to your home stereo.
Line Out port Stereo receiver DSL or cable modem
If your computer has an AirPort Extreme Card installed, or a compatible wireless card for Windows, you can use AirTunes to play iTunes music on a stereo connected to your AirPort Express.

You can also connect your AirPort Express to the Internet and provide Internet access to computers that join the network. Connect your AirPort Express to your home stereo, and computers on the network with AirPort Extreme Cards or computers with compatible 802.11b or 802.11g cards can use iTunes to play music on the stereo.
DSL or cable modem Stereo receiver to Internet
Optional Audio Cable and Power Cord
You can purchase the optional AirPort Express Stereo Connection Kit with Monster Cables to connect your AirPort Express to your home stereo or powered speakers. The kit includes analog mini-stereo-to-dual-RCA connectors, a Toslink digital fiber optic cable, and a power cord.
Mini-stereo-to-RCA cable Toslink-to-mini digital fiber optic cable

Power cord

Connect the analog cable to your home stereo if it uses standard analog cables. Connect the digital fiber optic cable if your stereo has a digital Toslink port. Connect the power cord if you are setting up your AirPort Express away from a power outlet.
Using AirPort Express to Share a USB Printer
When you connect a USB printer to your AirPort Express, all of the computers on the wireless network can print to it. What It Looks Like

Shared printer

d USB port
How to Set It Up 1 Connect the printer to the AirPort Express USB port (d) using a USB cable. 2 Use AirPort Utility to create a new network or join an existing one. Wireless computers can print to the printer using Mac OS X v10.2.7 or later, or Windows 2000 or Windows XP. To use the printer from a computer using Mac OS X: 1 Open Printer Setup Utility (located in the Utilities folder in the Applications folder). 2 Select the printer from the list. If the printer is not in the list, click Add, choose Bonjour from the pop-up menu, and then select the printer from the list. To use the printer from a Windows computer: 1 Install Bonjour for Windows from the CD that came with your AirPort Express. 2 Follow the onscreen instructions to connect your printer.
Extending the Range of an Existing AirPort Extreme or AirPort Express Network
You can connect an additional AirPort Express to extend the range of your existing AirPort Extreme or AirPort Express network. Adding a base station or AirPort Express to an existing network creates what is known as a Wireless Distribution System (WDS). If the AirPort network is connected to the Internet, computers can connect to the AirPort network and share the Internet connection.
Family Room Dining Room Living Room
AirPort Extreme Base Station
How to Set It Up 1 You need to have an existing AirPort network created by an AirPort Extreme Base Station or an AirPort Express connected to the Internet. This base station is called the main base station and shares its Internet connection with your AirPort Express. 2 Use AirPort Utility to join your network and extend its range. (See page 25 for more information.) Both base stations share the Internet connection with client computers wirelessly, or using Ethernet if the client computers are connected by Ethernet.

Using AirPort Express with Your AirPort Extreme Network
The illustration below shows a wireless network with all of the above examples in a single wireless network.

Family Room Living Room

to Ethernet port to Internet

to Line Out port

to USB port
How to Set It Up Use AirPort Utility to create a new network and take advantage of all the AirPort Express features.
Setting Up AirPort Express
This chapter provides information and instructions for using the AirPort software to set up your AirPort Express.
Use the diagrams in the previous chapter to help you decide where you want to use your AirPort Express, and what features you want to set up on your AirPort network. Then use the instructions in this chapter to easily configure AirPort Express and set up your AirPort network. With AirPort Utility you can: Set up a new network that wireless computers can use to communicate with each other. If you set up your AirPort Express as a base station and connect it to the Internet, wireless computers can also share the Internet connection. Connect your AirPort Express to your existing wireless network and use AirTunes to play iTunes music on your home stereo or powered speakers, and connect a USB printer to share. Connect your AirPort Express to your existing AirPort Extreme or AirPort Express network and extend the range of your wireless network using the AirPort Express as a wireless bridge. This is known as a Wireless Distribution System (WDS).
You can use AirTunes to play music from iTunes and share a USB printer in any type of network you set up, whether it is a new network or you are joining an existing network. If you have more than one AirPort Express, you can connect one to the stereo in your living room and connect another to the powered speakers in your den. Using AirTunes, you can stream your iTunes music to either AirPort Express, depending on where you are in your house. Choose the name of the AirPort Express you want to use from the speakers pop-up menu in iTunes. This chapter provides an overview for using the setup assistant in AirPort Utility to set up your network and other features of your AirPort Express. For more detailed wireless networking information, and for information about the advanced features of AirPort Utility, refer to the Designing AirPort 802.11n Networks document, located at www.apple.com/support/airport. The document provides details for both of the following: Using AirPort Utility with the AirPort Extreme 802.11n Base Station Using AirPort Utility to set up your AirPort Express 802.11g Base Station Note: You can do most of your network setup and configuration tasks using the setup assistant in AirPort Utility. To set advanced options, choose Manual Setup from the Base Station menu of AirPort Utility. See Setting Advanced Options on page 32.
Chapter 3 Setting Up AirPort Express
Using the AirPort Utility

To set up and configure your AirPort Express to use AirPort for wireless networking and Internet access, use the setup assistant in AirPort Utility. AirPort Utility is installed on your computer when you install the software on the AirPort Express CD. On a Macintosh computer using Mac OS X v10.4 or later: 1 Open AirPort Utility, located in the Utilities folder in your Applications folder. 2 Select your base station and click Continue. 3 Follow the onscreen instructions to set up your AirPort Express and your wireless network. On a computer using Windows XP (with Service Pack 2): 1 Open AirPort Utility, located in Start > All Programs > AirPort. 2 Select your base station and click Continue.
3 Follow the onscreen instructions to set up your AirPort Express and your wireless network.
The setup assistant in AirPort Utility asks you a series of questions about the type of network you want to use and the services you want to set up. The setup assistant helps you enter the appropriate settings for the network you are setting up. If you are using AirPort Express to connect to the Internet, you need a broadband (DSL or cable modem) account with an Internet service provider, or a connection to the Internet using an existing Ethernet network. If you received specific information from your service provider (such as a static IP address or a DHCP client ID), you may need to enter it in AirPort Utility. Have this information available before you set up your AirPort Express.
Creating a New Wireless Network
You can use the setup assistant in AirPort Utility to create a new wireless network. The setup assistant guides you through the steps necessary to name your network, protect your network with a password, and set other options. If you plan to share a USB printer on your network: 1 Connect the printer or hard disk to the AirPort Express USB port (d). 2 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Macintosh, or in Start > All Programs > AirPort on a computer using Windows XP. 3 Follow the onscreen instructions to create a new network.
Configuring and Sharing Internet Access
If you plan to share your Internet connection with wireless-enabled computers on your network, you need to set up your AirPort Express to share its Internet connection. After it is set up, computers access the Internet via the AirPort network. The base station connects to the Internet and transmits information to the computers over the AirPort network. Before you use the AirPort Utility to set up your base station, connect your DSL or cable modem to the AirPort Express Ethernet port (G). If you are using an existing Ethernet network with Internet access to connect to the Internet, you can connect the AirPort Express to the Ethernet network instead. Use the setup assistant in AirPort Utility to enter your ISP settings and configure how AirPort Express shares the settings with other computers. 1 Choose the wireless network you want to change.

On a Macintosh, use the AirPort status menu in the menu bar. On a computer using Windows XP, hold the pointer over the wireless connection icon until you see your AirPort network name (SSID), and choose it from the list if there are multiple networks available. The default network name for an Apple base station is AirPortNetworkXXXXXX, where XXXXXX is replaced with the last six digits of the AirPort ID, also know as the Media Access Control or MAC address. The AirPort ID is printed on the electrical-plug side of the AirPort Express. 2 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Macintosh, or in Start > All Programs > AirPort on a computer using Windows XP. 3 Select your base station and click Continue. 4 Follow the onscreen instructions to configure and share Internet access on your AirPort Express. Using AirPort Utility is a quick and easy way to set up your base station and network. If you want to set additional options for your network, such as restricting access to your network, or setting advanced DHCP options, you can choose Manual Setup from the Base Station menu of AirPort Utility.
Connecting to an Existing Wireless Network
You can use the AirPort Utility to join an existing wireless network. When you connect your AirPort Express to your home stereo, computers on your wireless network can use AirTunes to play music on the stereo from iTunes. If you connect a USB printer to your AirPort Express, all of the computers on the network can print to it.
Make sure you connect the audio cable to your stereo and the USB cable to your printer before you use AirPort Utility. 1 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Macintosh, or in Start > All Programs > AirPort on a computer using Windows. 2 Follow the onscreen instructions to connect your AirPort Express to your wireless network.
You can extend the range of an existing AirPort Extreme or AirPort Express wireless network by setting it up in a WDS. Wireless computers can connect to the network and share the Internet connection, share files, and play network games. If you connect your AirPort Express to your home stereo, computers on your wireless network can use AirTunes to play music on the stereo from iTunes. If you connect a USB printer to your AirPort Express, all of the computers on the network can print to it. m Open AirPort Utility and follow the onscreen instructions to extend the range of your AirPort Extreme or AirPort Express network. Extending the range of a network using a WDS may reduce overall network performance.

Setting Advanced Options

To set advanced options, you can use AirPort Utility to set up your AirPort Express manually. You can configure advanced base station settings, such as advanced security options, closed networks, DHCP lease time, access control, power controls, setting up user accounts, and more. To set advanced options: 1 Choose the wireless network you want to change. On a Macintosh, use the AirPort status menu in the menu bar. On a computer using Windows XP, hold the pointer over the wireless connection icon until you see your AirPort network name (SSID), and choose it from the list if there are multiple networks available. The default network name for an Apple base station is AirPortNetwork XXXXXX, where XXXXXX is replaced with the last six digits of the AirPort ID, also know as the Media Access Control or MAC address. The AirPort ID is printed on the electrical-plug side of the AirPort Express. 2 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Macintosh, and in Start > All Programs > AirPort on a computer using Windows XP. 3 If there is more than one base station in the list, select the base station you want to configure. If you dont see the base station you want to configure, click Rescan to scan for available base stations, and then select the base station you want. 4 Choose Manual Setup from the Base Station menu. If you are prompted for a password, enter it.

You Cant Play Music on Your Stereo from iTunes
Check the following: Make sure your AirPort Express is plugged into a power outlet, is in range of your computer, and that you have connected the appropriate cables. You may need to join the AirPort Express network. Make sure to choose your AirPort Express from the speakers pop-up menu in iTunes. Make sure you are using iTunes 4.6 or later.
You Can't Hear Music Playing
If music is playing (the progress bar at the top of the iTunes window is moving) but you can't hear anything, check the following: If you are trying to play music through speakers connected to an AirPort Express, and you've selected the Disable iTunes volume control for remote speakers checkbox in the Audio pane of iTunes preferences, make sure your remote speakers are selected in the pop-up menu at the bottom of the iTunes window and the volume control on the remote speakers isn't turned down.
You Forgot Your Network or AirPort Express Password
You can clear the AirPort network or AirPort Express password by resetting AirPort Express. Follow these steps: 1 Use the end of a straightened paper clip to press and hold the reset button for one second. 2 Select your AirPort network. On a Macintosh, use the AirPort status menu in the menu bar to select the network created by AirPort Express (the network name does not change).
Chapter 5 Tips and Troubleshooting
On a computer using Windows 2000 or Windows XP, hold the pointer over the wireless connection icon until you see your AirPort Network Name (SSID), and choose it from the list if there are multiple networks available. 3 Open AirPort Utility (in the Utilities folder in the Applications folder on a Macintosh, and in Start > All Programs > AirPort on a computer using Windows XP or Windows 2000). 4 Select your AirPort Express and click Configure. 5 In the dialog that appears, make the following changes: Reset the AirPort Express password. Turn encryption on to activate password protection for your AirPort network. If you turn on encryption, enter a new password for your AirPort network. 6 Click OK. AirPort Express restarts to load the new settings.
Your AirPort Express Isnt Responding
Try unplugging it and plugging it back in to a power outlet. If your AirPort Express stops responding completely, you may need to reset it to the factory default settings. This erases all of the settings youve made and resets them to the settings that came with the AirPort Express.
Your AirPort Express Status Light Flashes Amber
The Ethernet cable may not be connected properly, AirPort Express may be out of range of an AirPort network, or there may be a problem with your Internet service provider. If you are connected to the Internet with a DSL or cable modem, the modem may have lost its connection to the network or the Internet. Even if the modem seems to be working properly, try disconnecting the modem from its power supply, waiting a few seconds, and then reconnecting it. Make sure AirPort Express is connected directly to the modem via Ethernet before reconnecting power to the modem. If your AirPort Express is set up in a Wireless Distribution System (WDS), the WDS link may be interrupted. Note: If AirPort Express is set up as a wireless client and the network it's joining is protected by an access control list (ACL), AirPort Express must be in the ACL to connect to the network. For information about the reason the light flashes amber, open AirPort Utility, select your base station, and then choose Manual Setup from the Base Station menu. Enter the base station password if necessary, and then click Base Station Status to display information about the flashing light. To return AirPort Express to the factory settings: m Use the end of a straightened paper clip to press and hold down the reset button for ten seconds. AirPort Express restarts with the following settings: AirPort Express receives its IP address using DHCP. The network name reverts to Apple Network XXXXXX (where X is a letter or number).

Onscreen Help

m To learn more about using AirPort, open AirPort Utility and choose Help > AirPort Utility Help.
Obtaining Warranty Service
If the product appears to be damaged or does not function properly, please follow the advice in this booklet, the onscreen help, and the online resources. If the unit still does not function, go to www.apple.com/support for instructions on how to obtain warranty service.
Finding the Serial Number of Your AirPort Express
The serial number is printed on the back of your AirPort Express.
Chapter 6 Learning More, Service, and Support
AirPort Express Specifications
AirPort Specifications Wireless Data Rate: Up to 54 megabits per second (Mbps) Range: Up to 150 feet (45 meters) in typical use (varies with environment) Frequency Band: 2.4 gigahertz (GHz) Radio Output Power: 15 dBm (nominal) Standards: 802.11 DSSS 1 and 2 Mbps standard, 802.11b, and 802.11g specification Interfaces RJ-45 Ethernet LAN connector for built-in 10/100Base-T (G) Universal Serial Bus (USB) printing (d) Analog/digital optical 3.5mm mini-jack AirPort Extreme Environmental Specifications Operating Temperature: 32 F to 95 F (0 C to 35 C) Storage Temperature: 13 F to 140 F (25 C to 60 C) Relative Humidity (Operational): 20% to 80% relative humidity Relative Humidity (Storage): 10% to 90% relative humidity, noncondensing Operating Altitude: 0 to 10,000 feet (0 to 3048 m) Maximum Storage Altitude: 15,000 feet (4572 m)

Appendix

Size and Weight Height: 3.7 inches (94 mm) Width: 2.9 inches (75 mm) Thickness: 1.12 inches (28.5 mm) Weight: 6.63 ounces (188 grams) Hardware Addresses The AirPort has two hardware addresses printed on the side of the case: AirPort ID: The address used to identify AirPort Express on a wireless network. Ethernet ID: This also known as the MAC address. You may need to provide this address to your ISP to connect AirPort Express to the Internet.
AirPort Express Safety Tips
The only way to shut off power completely to your AirPort Express is to disconnect it from the power source. When connecting or disconnecting your AirPort Express, always hold it by its sides. Keep fingers away from the metal part of the plug. Your AirPort Express is a high-voltage component and should not be opened for any reason, even when the AirPort Express is unplugged. If your AirPort Express needs service, see Learning More, Service, and Support on page 47. Never force a connector into the ports. If the connector and port do not join with reasonable ease, they probably dont match. Make sure that the connector matches the port and that you have positioned the connector correctly in relation to the port.

Radio and Television Interference
This computer equipment generates, uses, and can radiate radio-frequency energy. If it is not installed and used properlythat is, in strict accordance with Apples instructionsit may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in Part 15 of FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. You can determine whether your computer system is causing interference by turning it off. If the interference stops, it was probably caused by the computer or one of the peripheral devices. If your computer system does cause interference to radio or television reception, try to correct the interference by using one or more of the following measures: Turn the television or radio antenna until the interference stops. Move the computer to one side or the other of the television or radio.
Industry Canada Statement
This Class B device meets all requirements of the Canadian interference-causing equipment regulations. Cet appareil numrique de la Class B respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada.

VCCI Class B Statement

Europe EU Declaration of Conformity
Complies with European Directives 72/23/EEC, 89/336/ EEC, 1999/5/EC. For more information, see www.apple.com/euro/compliance.
European Union Disposal Information
This symbol means that according to local laws and regulations your product should be disposed of separately from household waste. When this product reaches its end falloff, take it to a collection point designated by local authorities. Some collection points accept products for free. The separate collection and recycling of your product at the time of disposal will help conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment.

www.apple.com/airport www.apple.com/support/airport
2007 Apple Inc. All rights reserved. Apple, the Apple logo, AirPort, AirPort Express, AirPort Extreme, Bonjour, iTunes, Mac, Macintosh, and Mac OS are trademarks of Apple Inc., registered in the U.S. and other countries. AirTunes is a trademark of Apple Inc. 034-4344-A Printed in XXXX

Chapter 1 Getting Started
Configuring an Apple Wireless Device for Internet Access Using AirPort Utility
Like your computer, Apple wireless devices must be set up with the appropriate hardware and IP networking information to connect to the Internet. Install AirPort Utility, which came on the CD with your wireless device, and use it to provide Internet configuration information and other network settings. This version of AirPort Utility combines the ease of use of AirPort Setup Assistant and the power of AirPort Admin Utility. It is installed in the Utilities folder in the Applications folder on a Macintosh computer using Mac OS X, and in Start > All Programs > AirPort on computers using Windows. AirPort Utility walks you through the setup process by asking a series of questions to determine how the devices Internet connection and other interfaces should be set up. Enter the settings you received from your ISP or network administrator for Ethernet, PPP over Ethernet (PPPoE), or your local area network (LAN); give your AirPort network a name and password; set up a device as a wireless bridge to extend the range of your existing AirPort network; and set other options. When you have finished entering the settings, AirPort Utility transfers the settings to your wireless device. Then it connects to the Internet and shares its Internet connection with computers that join its AirPort network. You can also create an AirPort network that takes advantage of the more advanced networking features of Apple wireless devices. To set more advanced AirPort options, use AirPort Utility to manually set up your wireless devices configuration, or make quick adjustments to one you have already set up. Some of the AirPort advanced networking features can be configured only using the manual setup features in AirPort Utility. Set up your Apple wireless device manually using AirPort Utility when: You want to provide Internet access to computers that connect to the wireless device using Ethernet You have already set up your device, but you need to change one setting, such as your account credentials You need to configure advanced settings such as channel frequency, advanced security options, closed networks, DHCP lease time, access control, WAN privacy, power controls, or port mapping or other options For instructions on using AirPort Utility to manually set up your wireless device and network, see Using AirPort Utility on page 15.

Extending the Range of Your AirPort Network
You can extend the range of your network by using AirPort Utility to set up wireless connections between several devices in your network, known as a Wireless Distribution System (WDS), or to connect a device using Ethernet to create a roaming network. For more information on setting up a WDS or a roaming network, see Connecting Additional Wireless Devices to Your AirPort Network on page 40.
Sharing a USB Hard Disk Connected to an AirPort Extreme Base Station or Time Capsule
If youre using the newest AirPort Extreme Base Station or a Time Capsule, you can connect a USB hard disk to it, and computers connected to the networkwired or wireless, Mac or Windowscan share files using the hard disk. Every Time Capsule includes an internal AirPort disk, so you dont need to connect an external one. If you want, you can connect additional USB disks to the USB port on your Time Capsule. See Sharing and Securing USB Hard Disks on Your Network on page 58.
Printing with an Apple Wireless Device
If you have a compatible USB printer connected to your Apple wireless device, computers on the AirPort network can use Bonjour (Apples zero-configuration networking technology) to print to the printer. For instructions about printing to a USB printer from a computer, see Connecting a USB Printer to an Apple Wireless Device on page 60.
Sharing Your Computers Internet Connection
If your computer is connected to the Internet, you can share your Internet connection with other computers using Mac OS X version 10.2 or later, or Windows XP with Service Pack 2. This is sometimes called using your computer as a software base station. You can share your Internet connection as long as your computer is connected to the Internet. If your computer goes to sleep or is restarted, or if you lose your Internet connection, you need to restart Internet sharing.
To start Internet sharing on a computer using Mac OS X v10.5: 1 Open System Preferences and click Sharing. 2 Choose the port you want to use to share your Internet connection from the Share your connection using pop-up menu. 3 Select the port you want to use to share your Internet connection in the To computers using list. You can choose to share your Internet connection with AirPort-enabled computers or computers with built-in Ethernet, for example. 4 Select Internet Sharing in the Services list.
5 If you want to share your Internet connection with computers using AirPort, click AirPort Options to give your network a name and password.
To start Internet sharing on a computer using Windows: 1 Open Control Panel from the Start menu, and then click Network and Internet. 2 Click Network and Sharing Center. 3 Click Manage network connections in the Tasks list. 4 Right-click the network connection you want to share, and then select Properties. 5 Click Sharing and then select Allow other network users to connect through this computers Internet connection.

Wi-Fi Protected Access (WPA) and WPA2
There has been increasing concern about the vulnerabilities of WEP. In response, the Wi-Fi Alliance, in conjunction with the IEEE, has developed enhanced, interoperable security standards called Wi-Fi Protected Access (WPA) and WPA2. WPA and WPA2 use specifications that bring together standards-based, interoperable security mechanisms that significantly increase the level of data protection and access control for wireless LANs. WPA and WPA2 provide wireless LAN users with a high-level assurance that their data remains protected and that only authorized network users can access the network. A wireless network that uses WPA or WPA2 requires all computers that access the wireless network to have WPA or WPA2 support. WPA provides a high level of data protection and (when used in Enterprise mode) requires user authentication. The main standards-based technologies that constitute WPA include Temporal Key Integrity Protocol (TKIP), 802.1X, Message Integrity Check (MIC), and Extensible Authentication Protocol (EAP). TKIP provides enhanced data encryption by addressing the WEP encryption vulnerabilities, including the frequency with which keys are used to encrypt the wireless connection. 802.1X and EAP provide the ability to authenticate a user on the wireless network. 802.1X is a port-based network access control method for wired as well as wireless networks. The IEEE adopted 802.1X as a standard in August 2001. The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them, and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, the data is assumed to have been tampered with and the packet is dropped. If multiple MIC failures occur, the network may initiate countermeasures.
The EAP protocol known as TLS (Transport Layer Security) presents a users credentials in the form of digital certificates. A users digital certificates can comprise user names and passwords, smart cards, secure IDs, or any other identity credentials that the IT administrator is comfortable using. WPA uses a wide variety of standards-based EAP implementations, including EAP-Transport Layer Security (EAP-TLS), EAP-Tunnel Transport Layer Security (EAP-TTLS), and Protected Extensible Authentication Protocol (PEAP). AirPort Extreme also supports the Lightweight Extensible Authentication Protocol (LEAP), a security protocol used by Cisco access points to dynamically assign a different WEP key to each user. AirPort Extreme is compatible with Ciscos LEAP security protocol, enabling AirPort users to join Cisco-hosted wireless networks using LEAP. In addition to TKIP, WPA2 supports the AES-CCMP encryption protocol. Based on the very secure AES national standard cipher, combined with sophisticated cryptographic techniques, AES-CCMP was specifically designed for wireless networks. Migrating from WEP to WPA2 requires new firmware for the AirPort Extreme Base Station (version 5.6 or later), and for AirPort Express (version 6.2 or later). Devices using WPA2 mode are not backward compatible with WEP. WPA and WPA2 have two modes: Personal mode, which relies on the capabilities of TKIP or AES-CCMP without requiring an authentication server Enterprise mode, which uses a separate server, such as a RADIUS server, for user authentication

Using AirPort Utility

To set up and configure your computer or Apple wireless device to use AirPort Extreme for basic wireless networking and Internet access, use AirPort Utility and answer a series of questions about your Internet settings and how you would like to set up your network. 1 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer.
2 Select your device in the list on the left if there is more than one device in your network. Click Continue, and then follow the onscreen instructions to enter the settings from your ISP or network administrator for the type of network you want to set up. See the network diagrams later in this chapter for the types of networks you can set up using AirPort Utility. To set up a more complicated network, or to make adjustments to a network you have already set up, use the manual setup features in AirPort Utility. Setting AirPort preferences Use AirPort preferences to set up your wireless device to alert you when there are updates available for your device. You can also set it up to notify you if there are problems detected, and to provide instructions to help solve the problems. To set AirPort preferences: 1 Open AirPort Utility, located in the Utilities folder inside the Applications folder on a Mac, and in Start > All Programs > AirPort on a Windows computer. 2 Choose Preferences from the AirPort Utility menu on a Mac, and from the File menu on a Windows computer.
Chapter 3 AirPort Network Designs
Select from the following checkboxes: Select Check for Updates when opening AirPort Utility to automatically check the Apple website for software and firmware updates each time you open AirPort Utility. Select the Check for updates checkbox, and then choose a time interval from the pop-up menu, such as weekly, to check for software and firmware updates in the background. AirPort Utility opens if updates are available. Select Monitor Apple wireless devices for problems to investigate problems that may cause the device's status light to blink amber. With the checkbox selected, AirPort Utility opens if a problem is detected, and then provides instructions to help resolve the problem. This option monitors all of the wireless devices on the network. Select Only Apple wireless devices that I have configured to monitor only the devices you have set up using this computer. Monitoring devices for problems requires an AirPort wireless device that supports firmware version 7.0 or later. To set up your wireless device manually: 1 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer. 2 Select your device in the list. 3 Choose Manual Setup from the Base Station menu and enter the password if necessary. The default device password is public. If you dont see your wireless device in the list: 1 Open the AirPort status menu in the menu bar on a Mac and make sure that you have joined the AirPort network created by your wireless device. On a Windows computer, hover the cursor over the wireless network icon in the status tray to make sure the computer is connected to the correct network. The default network name for an Apple wireless device is AirPort Network XXXXXX, where XXXXXX is replaced with the last six digits of the AirPort ID, (or MAC address). The AirPort ID is printed on the bottom of Apple wireless devices. 2 Make sure your computers network and TCP/IP settings are configured properly. On a computer using Mac OS X, choose AirPort from the Show pop-up menu in the Network pane of System Preferences. Then choose Using DHCP from the Configure IPv4 pop-up menu in the TCP/IP pane. On a computer using Windows, right-click the wireless connection icon that displays the AirPort network, and choose Status. Click Properties, select Internet Protocol (TCP/IP), and then click Properties. Make sure Obtain an IP address automatically is selected. If you cant open the wireless device settings: 1 Make sure your network and TCP/IP settings are configured properly.

Configuring and Sharing Internet Access
The next step is setting up your wireless devices Internet connection and sharing its Internet access with client computers. The following sections tell you what to do, depending on how your device connects to the Internet.
Youre Using a DSL or Cable Modem
In most cases, you can implement this network design using AirPort Utility and following the onscreen instructions to set up your wireless device and network. You need to use AirPort Utility to manually set up your device only if you want to set up or adjust optional advanced settings. What It Looks Like

to Ethernet port

Time Capsule

< Ethernet WAN port

DSL or cable modem

to Internet

How It Works The Apple wireless device (in this example, a Time Capsule) connects to the Internet through its Internet WAN (<) connection to your DSL or cable modem. Computers using AirPort or computers connected to the wireless devices Ethernet LAN port (G) connect to the Internet through the device. The device is set up to use a single, public IP address to connect to the Internet, and uses DHCP and NAT to share the Internet connection with computers on the network using private IP addresses. AirPort computers and Ethernet computers communicate with one another through the wireless device. Important: Connect Ethernet computers that are not connected to the Internet to the devices LAN port (G) only. Since the device can provide network services, you must set it up carefully to avoid interfering with other services on your Ethernet network.
What You Need for a DSL or Cable Modem Connection
Components Internet account with DSL or cable modem service provider Check Comments Does your service provider use a You can get this information static IP or DHCP configuration? from your service provider or the Network preferences pane on the computer you use to access the Internet through this service provider. Place the device near your DSL or cable modem.
Apple wireless device (an AirPort Extreme Base Station, an AirPort Express, or a Time Capsule)
What to Do If you are using AirPort Utility to assist you with configuring the Apple wireless device for Internet access: 1 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer. 2 Follow the onscreen instructions and enter the settings you received from your service provider to connect to the Internet, and then set up the device to share the Internet connection with computers on the network. If you are using AirPort Utility to manually set up your wireless device: 1 Make sure that your DSL or cable modem is connected to the Ethernet WAN port (<) on your Apple wireless device. 2 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer. Select your wireless device and choose Manual Setup from the Base Station menu, or double-click your devices icon in the list to open the configuration in a separate window. 3 Click the Internet button. Click Internet Connection and choose Ethernet or PPPoE from the Connect Using pop-up menu, depending on which one your service provider requires. If your service provider gave you PPPoE connection software, such as EnterNet or MacPoET, choose PPPoE. Note: If you are connecting to the Internet through a router using PPPoE and your Apple wireless device is connected to the router via Ethernet, you do not need to use PPPoE on your wireless device. Choose Ethernet from the Connect Using pop-up menu in the Internet pane, and deselect the Distribute IP addresses checkbox in the Network pane. Contact your service provider if you arent sure which one to select. 4 Choose Manually or Using DHCP from the Configure IPv4 pop-up menu if you chose Ethernet from the Connect Using pop-up menu, depending on how your service provider provides IP addresses.

7 Click Update to send the new settings to the devices in the WDS. By default, the Allow wireless clients checkbox is selected. If you deselect the checkbox and later want to change the settings on the wireless device, you must connect to the devices LAN port with an Ethernet cable. You will not be able to connect to the device wirelessly. To set up additional remote devices to connect to the main device: If you want to add additional remote or relay devices to the WDS after setting up the main and remote devices, use AirPort Utility again. Remote devices need to be on the same channel as the main device. Before setting up additional remote devices, find the channel of the main device in the Summary pane of AirPort settings in AirPort Utility. 1 Click the AirPort status menu in the menu bar and choose the wireless network created by the device you want to set up as a remote device. 2 Open AirPort Utility (in the Utilities folder in the Applications folder on a Macintosh computer, or in Start > All Programs > AirPort on a computer using Windows). Select the remote device, and choose Manual Setup from the Base Station menu. Enter the password, if necessary. If the device is using the default password of public, you will not be prompted for a password. 3 Enter the same network password as the main device, if necessary. 4 Click the AirPort button, and then click Wireless. Choose Participate in a WDS network from the Wireless Mode pop-up menu, and choose the same channel as the device from the Channel pop-up menu. 5 Click WDS and choose WDS remote from the pop-up menu.
6 Enter the MAC address of the main device in the WDS Main field. The MAC address is also referred to as the AirPort ID and is printed on the label on the bottom of the device.
7 Click Update to transfer the settings. By default, the Allow wireless clients checkbox is selected. If you deselect the checkbox and later want to change the settings on the wireless device, you must connect to the devices LAN port with an Ethernet cable. You will not be able to connect to the device wirelessly. To set up a relay device to connect to the main device and share its connection with additional remote devices: If you want to set up a relay device in the WDS to share its connection with other remote devices and wireless clients, use AirPort Utility again. When you set up a relay, you also need to set up at least one additional remote to share the relays connection. To set up a relay, first set it up as a remote by following the instructions on page 44.

Keeping Your Network Secure
Your network is protected by the password you assign to it. However, you can take additional steps to help keep your network secure. Networks managed by Simple Network Management Protocol (SNMP) may be vulnerable to denial-of-service attacks. Similarly, if you configure your wireless device over the WAN port, it may be possible for unauthorized users to change network settings. When remote configuration is enabled, the devices Bonjour information (the device name and IP address) is published over the WAN port. Turning off remote configuration may provide additional security.
To help protect your network and wireless device: 1 Open AirPort Utility, select your device, and choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Click the Advanced button, and then click Logging & SNMP. 3 Make sure the Allow SNMP Access and Allow SNMP over WAN checkboxes are not selected. Using Wi-Fi Protected Access AirPort Extreme supports WPA and WPA2 security standard for wireless networks. Using Mac OS X v10.3 or later or Windows XP with Service Pack 2, and 802.1X authentication capabilities, WPA security delivers more sophisticated data encryption than WEP, and also provides user authentication, which was virtually unavailable with WEP. If your computer has an AirPort Extreme wireless card installed, you can take advantage of the security updates in WPA2, including AES-CCMP encryption. AirPort Extreme supports two modes of WPA and WPA2: Enterprise mode, which uses an authentication server for user authentication, and Personal mode, which relies on the capabilities of TKIP for WPA and AES-CCMP for WPA2, without requiring an authentication server. Enterprise mode is designed for a larger network in which an IT professional is most likely setting up and managing the network. In order to set up a WPA or WPA2 Enterprise network, an 802.1X connection must be set up first in Network preferences on a Mac. To set up an 802.1x connection on a Windows computer, see the documentation that came with your computer. The 802.1X connection requires an authentication protocol, like TTLS, LEAP, or PEAP. Setting up a WPA or WPA2 Enterprise network requires setting up an authentication server, such as a RADIUS server, to manage and validate network users credentials, such as user names, passwords, and user certificates. See the documentation that came with the server to set it up. Personal mode is for the home or small office network and can be set up and managed by most users. Personal mode does not require a separate authentication server. Network users usually need only enter a user name and password to join the network. Note: If you change an existing WDS network from WEP to WPA, you will need to reset the wireless devices and set up your WDS again. For information about resetting your Apple wireless device, see the documentation that came with it.

To set up a WPA or WPA2 Enterprise network: On a computer using Mac OS X, you first need to set up an 802.1x connection. 1 Open System Preferences, click Network, and then click AirPort. 2 Click Advanced, and then click 802.1X 3 Enter the settings for the connection. Note: Some of the authentication protocols require digital certificate authorization on the server. See the documentation that came with your server to create and distribute digital certificates. 4 Click OK to save the connection settings. To use AirPort Utility to set up a WPA or WPA2 Enterprise network on computers using Mac OS X and Windows XP: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Choose WPA/WPA2 Enterprise, or WPA2 Enterprise from the Wireless Security pop-up menu, depending on the capabilities of the client computers that will join your network. 3 Click Configure RADIUS, and enter the IP address, port, and shared secret (or password) of the primary and secondary RADIUS authentication servers. Check with the administrator of the RADIUS server for information to type in these fields. To set up a WPA or WPA2 Personal network: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Choose WPA/WPA2 Personal or WPA2 Personal from the Wireless Security pop-up menu depending on the capabilities of the client computers that will join your network. 3 Type a password of 8 to 63 ASCII characters. Setting Up Access Control Access control lets you specify which computers can send or receive information through the wireless device to the wired network. Each wireless-enabled computer has a unique MAC address. You can restrict access by creating an access control list that includes only the MAC addresses for computers you want to access your wired network. To find the MAC address (AirPort ID) of your computers AirPort Card, click the AirPort button in the Network pane of System Preferences.
To set up the access control list: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu. Enter the password if necessary. 2 Click the AirPort button, and then click Access. 3 Choose Timed Access or RADIUS from the MAC Address Access Control pop-up menu, depending on the device you're setting up.
If you choose Timed Access, click the Add (+) button and enter the MAC address and description or name of the computers you are allowing to access the network. You can also click This Computer to add the MAC address and name of the computer you are using to set up this wireless device. Double-click the computer in the list and choose a value from each pop-up menu. Choose a day of the week or Everyday from the day pop-up menu, and then choose either all day or between from the other pop-up menu. If you choose between, you can edit the times of the day by doubleclicking in the time fields. If you choose RADIUS, enter the type of RADIUS service, the RADIUS IP addresses, shared secret, and primary port for the primary RADIUS server. Enter the information for the secondary RADIUS server if there is one. Check with the server administrator if you don't have that information. Important: AirPort access control prevents computers that arent on the access control list from accessing the AirPort network. For information on how to prevent unauthorized computers from joining the AirPort network, see Setting Up the AirPort Extreme Network on page 17.

If you are using a web, AppleShare, or FTP server on your AirPort Extreme network, other computers initiate communication with your server. Because the Apple wireless device has no table entries for these requests, it has no way of directing the information to the appropriate computer on your AirPort network. To ensure that requests are properly routed to your web, AppleShare, or FTP server, you need to establish a permanent IP address for your server and provide inbound port mapping information to your Apple wireless device. To set up inbound port mapping: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Click the Advanced button, and then click Port Mapping.
3 Click the Add (+) button and choose a service, such as Personal File Sharing, from the Service pop-up menu.
Type any additional information you need in the text fields.
To use port mapping, you must configure TCP/IP manually on the computer that is running the web, AppleShare, or FTP server. You can also set up a computer as a default host to establish a permanent IP address for the computer and provide inbound port mapping information to the AirPort Extreme Base Station or AirPort Express. This is sometimes known as a DMZ and is useful when playing some network games or videoconferencing. To set up a default host: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Click the Internet button, and then click NAT. 3 Select the Enable Default Host at checkbox. The default IP address is 10.0.1.253. 4 Enter the same IP address on the host computer.

Logging

You can set up your wireless device to log status information to the Mac OS X system log or the Syslog application on a Windows computer. This is helpful for understanding problems and monitoring a devices performance. To set up logging: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Click the Advanced button, and then click Logging and SNMP.

3 Enter the IP address of the computer that will receive the logs in the Syslog Destination Address field. 4 Choose a level from the Syslog Level pop-up menu. You need to assign a Network Time Protocol (NTP) server for each wireless device, so the log information will contain the accurate time of the status logs. To set the time automatically: 1 Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. Enter the password if necessary. 2 Click the AirPort button, and then click Base Station. 3 Select the Set time automatically checkbox, and then choose an NTP server from the pop-up menu if you have access to one on your network or on the Internet. If you click Logs and Statistics you can view and export logs, and view wireless client and DHCP client information. If you export the logs, use the Mac OS X Console application, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer, to view the logs on the computer receiving them.

Setting up IPv6

IPv6 is a new version of Internet Protocol (IP). IPv6 is currently used primarily by some research institutions. Most computers do not need to set up or use IPv6. The primary advantage of IPv6 is that it increases the address size from 32 bits (the current IPv4 standard) to 128 bits. An address size of 128 bits is large enough to support billions and billions of addresses. This allows for more addresses or nodes than are currently available. IPv6 also provides more ways to set up the address and simpler autoconfiguration. By default, IPv6 is configured automatically, and the default settings are sufficient. However, if your network administrator or Internet service provider (ISP) has specifically told you to configure IPv6 manually, follow the instructions below. Open AirPort Utility, select your wireless device, and then choose Manual Setup from the Base Station menu. Enter the password if necessary. Click the Advanced button, and then click IPv6. To manually set IPv6 options: 1 Choose Node or Tunnel from the IPv6 mode pop-up menu, depending on the method you were instructed to use.
2 Choose Manually from the Configure IPv6 pop-up menu, and enter the information you were given from your ISP or network administrator.

For information about using your Time Capsule with Time Machine in Mac OS X Leopard, search for Time Capsule in Mac Help.
Connecting a USB Printer to an Apple Wireless Device
You can connect a compatible USB printer to your Apple wireless device (an AirPort Extreme Base Station, AirPort Express, or Time Capsule), so that anyone on the network using Mac OS X v10.2.3 or later, Windows XP with Service Pack 2, or Windows Vista can print to that printer. To use a printer on your network: 1 Connect the printer to the USB port on the Apple wireless device. 2 Set up the client computers: On a computer using Mac OS X v10.5 or later, open System Preferences and click Print & Fax. Select the printer from the Printers list. If the printer isnt in the list, click Add (+) at the bottom of the list, locate the printer, and then click Add.
On a computer using Mac OS X v10.2.3 or later, open Printer Setup Utility located in the Utilities folder in the Applications folder, and then select the printer from the list. If the printer is not in the list, click Add, choose Bonjour from the pop-up menu, and then select the printer from the list. On a computer using Windows, install Bonjour for Windows from AirPort Utility CD, and follow the onscreen instructions to connect to the printer. You can change the name of the printer from the default name to one you choose. To change the name of your USB printer: 1 Open AirPort Utility, select your device, and then choose Manual Setup from the Base Station menu, or double-click the device icon to open its configuration in a separate window. 2 Click the Printer button and type a name for the printer in the USB Printers field.
Adding a Wireless Client to Your 802.11n Network
If your Apple wireless device supports it, and your network is password-protected using WPA Personal or WPA/WPA2 Personal, you can provide wireless clients access to your network without requiring them to enter the network password. When you allow a client access to your network, the client's name and wireless MAC address (or AirPort ID) are stored in the access control list of AirPort Utility until you remove them from the list. You can provide 24 hours of access, after which time the client will no longer be able to access your network. When you provide a client access to your wireless network, the client does not need to enter the network password. To allow client access to your network: 1 Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, or in Start > All Programs > AirPort on a Windows computer. 2 Select your Apple wireless device and choose Manual Setup from the Base Station menu. Enter the password if necessary. 3 Choose Add Wireless Clients from the Base Station menu. 4 Select how you want the client to access the network: Select PIN to enter the eight-digit number provided by the client requesting network access. Select First attempt to allow network access to the first client attempting to join the network. Select Limit client's access to 24 hours if you want to provide only one day of access to your network. If you don't select this option, the client will have access to your network until you remove the name from the list.

Rules for Sending Information (Protocols)
A protocol is a set of rules that define how communication takes place. For instance, a networking protocol may define how information is formatted and addressed, just as theres a standard way to address an envelope when you send a letter.
Using the AirPort Extreme Base Station
This section describes the different network interfaces of the AirPort Extreme Base Station and describes the functions the base station can provide.

Base Station Interfaces

To use the AirPort Extreme Base Station, you configure how its networking interfaces will be used. The AirPort Extreme Base Station has five hardware networking interfaces: AirPort interface: The AirPort interface creates an AirPort network for AirPortenabled computers to join. The base station can provide IP services such as DHCP and NAT using this interface. The base station cannot use the AirPort interface to establish a connection with the Internet. Ethernet WAN (<) interface: The Ethernet WAN interface is used to connect DSL or cable modems and connect to the Internet. Ethernet LAN (G) interface: If your base station has one or more Ethernet LAN interface ports, you can use them to provide IP services to local Ethernet clients. USB (d) interface: The USB interface is used to connect a USB printer to the AirPort Extreme Base Station.

Status light

G Ethernet ports

Reset button

Power port

d USB port

Security slot
Chapter 4 Behind the Scenes

Using the Time Capsule

This section describes the different network interfaces of the Time Capsule and describes the functions it can provide.

Time Capsule Interfaces

To use your Time Capsule, you configure how its networking interfaces will be used. The Time Capsule has five hardware networking interfaces: AirPort interface: The AirPort interface creates an AirPort network for AirPortenabled computers to join. The Time Capsule can provide IP services such as DHCP and NAT using this interface. It cannot use the AirPort interface to establish a connection with the Internet. Ethernet WAN (<) interface: The Ethernet WAN interface is used to connect DSL or cable modems and connect to the Internet. Ethernet LAN (G) interface: The Time Capsule has three Ethernet LAN interface ports. You can use them to provide IP services to local Ethernet clients. USB (d) interface: The USB interface is used to connect a USB printer to the AirPort Extreme Base Station.

Using the AirPort Express
This section describes the different network interfaces of the AirPort Express Base Station and describes the functions the base station can provide.
AirPort Express Interfaces
To set up the AirPort Express Base Station, you configure how its networking interfaces will be used. The AirPort Express Base Station has four hardware networking interfaces: AirPort interface: The AirPort interface creates an AirPort network for AirPortenabled computers to join. The base station can provide IP services such as DHCP and NAT using this interface. The base station cannot use the AirPort interface to establish a connection with the Internet. Ethernet WAN (<) interface: Use the Ethernet WAN interface to connect DSL or cable modems and connect to the Internet. USB (d) interface: Use the USB interface to connect a USB printer to the AirPort Extreme Base Station.
Audio (-) interface: Use the analog and optical digital audio stereo mini-jack to connect an AirPort Express to a home stereo or powered speakers.

AC plug adapter

G Ethernet port

- Line Out port

(Analog and optical digital audio mini-jack)
Apple Wireless Device Functions
Bridge: Each Apple wireless device is configured by default as a bridge between the wireless AirPort network and the wired Ethernet network. Connecting an AirPort network to an Ethernet network through the devices Ethernet LAN port (G) bridges the wireless AirPort network to the wired Ethernet network. Important: If you are connecting an Ethernet network to the devices Ethernet LAN port (G), make sure the Ethernet network does not have an Internet connection. NAT router: One of the most powerful features of Apple wireless devices is their ability to share one Internet connection with several computers. To provide this service, the device acts as a router. The device can be configured to provide both bridging services and routing services at the same time. DHCP server: When you configure the wireless device to act as a DHCP server, it provides IP addresses to both wired and wireless client computers that are configured to obtain IP addresses using DHCP. Using DHCP makes IP configuration simple for client computers, since they dont need to enter their own IP information.
Items That Can Cause Interference with AirPort
The farther away the interference source, the less likely it is to cause a problem. The following items can cause interference with AirPort communication: Microwave ovens DSS (Direct Satellite Service) radio frequency leakage The original coaxial cable that came with certain types of satellite dishes. Contact the device manufacturer and obtain newer cables. Certain electrical devices, such as power lines, electrical railroad tracks, and power stations