Apple AirPort Networks manual Choosing the Radio Mode, Changing the Channel

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Choosing the Radio Mode

Choose 802.11a/n - 802.11b/g from the Radio Mode pop-up menu if computers with 802.11a, 802.11n, 802.11g, or 802.11b wireless cards will join the network. Each client computer will connect to the network and transmit network traffic at the highest possible speed.

Choose 802.11n - 802.11b/g if only computers with 802.11n, 802.11b, or 802.11g compatible wireless cards will join the network.

Note: If you don’t want to use an 802.11n radio mode, hold down the Option key and chose a radio mode that doesn’t include 802.11n.

Changing the Channel

The “channel” is the radio frequency over which your wireless device communicates. If you use only one device (for example, at home), you probably won’t need to change the channel frequency. If you set up several wireless devices in a school or office, use different channel frequencies for devices that are within approximately 150 feet of each other.

Adjacent wireless devices should have at least 4 channels between their channel frequencies. So if device A is set to channel 1, device B should be set to channel 6 or 11. For best results, use channels 1, 6, or 11 when operating your device in the 2.4 GHz range.

Choose Manually from the Radio Channel Selection pop-up menu, and then click Edit to set the channels manually.

AirPort-enabled computers automatically tune to the channel frequency your wireless device is using when they join the AirPort network. If you change the channel frequency, AirPort client computers do not need to make any changes.

Password-protect Your Network

To password-protect your network, you can choose from a number of wireless security options. In the AirPort pane of AirPort Utility, click Wireless and choose one of the following options from the Wireless Security pop-up menu:

ÂNone: Choosing this option turns off all password protection for the network. Any computer with a wireless adapter or card can join the network, unless the network is set up to use access control. See “Setting Up Access Control” on page 47.

ÂWEP: If your device supports it, choose this option and enter a password to protect your network with a Wired Equivalent Privacy (WEP) password. Your Apple wireless device supports 40-bit and 128-bit encryption. To use 40-bit WEP, don’t use an 802.11n radio mode.

Chapter 3 AirPort Network Designs

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Contents Apple AirPort Networks Contents Getting Started Getting Started Getting Started Printing with an Apple Wireless Device Extending the Range of Your AirPort NetworkSharing Your Computer’s Internet Connection Getting Started To start Internet sharing on a computer using Windows Security for AirPort Networks at Home NAT FirewallClosed Network Transmitter Power Control Password Protection and EncryptionMAC Address Access Control Security for AirPort Networks in Businesses and ClassroomsRadius Support Wi-Fi Protected Access WPA and WPA2WPA and WPA2 Personal WPA and WPA2 Enterprise Setting Up the AirPort Extreme Network Configuring and Sharing Internet AccessSetting Advanced Options Using AirPort Utility Setting AirPort preferencesTo set AirPort preferences If you don’t see your wireless device in the list To set up your wireless device manuallyIf you can’t open the wireless device settings Setting Up the AirPort Extreme NetworkAirPort Network Designs Change the Device Password Wireless Device SettingsGive the Device a Name Other InformationSetting the Wireless Mode Wireless Network SettingsSet Device Options Naming the AirPort Extreme NetworkChoosing the Radio Mode Password-protect Your NetworkChanging the Channel Setting Wireless Options Use the Wireless Options pane to set the following Setting Additional Wireless OptionsConfiguring and Sharing Internet Access Setting up a Guest NetworkYou’re Using a DSL or Cable Modem What It Looks Like How It WorksWhat You Need for a DSL or Cable Modem Connection What to Do AirPort Network Designs AirPort Network Designs AirPort Network Designs AirPort Network Designs Setting Dhcp and NAT Options AirPort Network Designs Setting Dhcp Only Options Setting Up Client ComputersTo configure TCP/IP on client computers using Mac OS X Next, choose Dhcp from the Configure IPv4 pop-up menu To configure TCP/IP on client computers To configure TCP/IP on client computers using WindowsAirPort Network Designs What You Need for an Ethernet Connection You’re Using an Existing Ethernet NetworkWhat to Do AirPort Network Designs AirPort Extreme Ethernet WAN port Time Capsule Setting Advanced Options To set up roaming Setting Up RoamingTo extend the range of an 802.11n network Extending the Range of an 802.11n NetworkTo shorten the range of your AirPort network Controlling the Range of Your AirPort NetworkTo help protect your network and wireless device Using Wi-Fi Protected AccessKeeping Your Network Secure To set up a WPA or WPA2 Personal network To set up a WPA or WPA2 Enterprise networkTo set up the access control list Setting Up Access ControlTo set up authentication using a Radius server Using a Radius ServerAirPort Network Designs To set up inbound port mapping To set up a default host To set up loggingLogging Using Back to My Mac on your Wireless Network To set up Back to My Mac on your wireless deviceTo set the time automatically To adjust IPv6 firewall settings Setting up IPv6Customizing the IPv6 firewall To manually set IPv6 optionsTo share a hard disk on your network Sharing and Securing USB Hard Disks on Your NetworkUsing a Time Capsule in Your Network Connecting a USB Printer to an Apple Wireless DeviceTo use a printer on your network Adding a Wireless Client to Your 802.11n Network To allow client access to your networkTo change the name of your USB printer Solving Problems On a computer using Mac OSOn a computer using Windows More Information About AirPort AirPort Utility HelpWorld Wide Web Packets and Traffic How Information Reaches Its DestinationHardware Addresses IP AddressesUsing the AirPort Extreme Base Station Rules for Sending Information ProtocolsBase Station Interfaces Using the AirPort Express Using the Time CapsuleTime Capsule Interfaces AirPort Express InterfacesApple Wireless Device Functions Items That Can Cause Interference with AirPort Glossary Glossary Glossary Glossary Glossary Glossary Glossary Glossary
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