Apple AirPort Networks manual Glossary

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channel One portion of the available radio spectrum that all devices on a wireless network use to communicate. Changing the channel on the access point/router can help reduce interference.

client Any computer or device connected to a network that requests files and services (files, print capability) from the server or other devices on the network. The term also refers to end users.

DHCP Dynamic Host Configuration Protocol. A protocol for dynamically assigning IP addresses from a predefined list to nodes on a network. When they log on, network nodes automatically receive an IP address from a pool of addresses served by a DHCP. The DHCP server provides (or leases) an IP address to a client for a specific period of time. The client will automatically request a renewal of the lease when the lease is about to run out. If a lease renewal is not requested and it expires, the address is returned to the pool of available IP addresses. Using DHCP to manage IP addresses simplifies client configuration and efficiently utilizes IP addresses. See IP address.

DNS Domain Name System. An Internet service that translates alphanumeric domain names to assigned IP addresses and vice versa. The term is typically used to describe the server that makes the translation. Every website has its own specific IP address on the Internet. DNS typically refers to a database of Internet names and addresses that translates the alphanumeric names to the official Internet Protocol numbers and vice versa. For instance, a DNS server converts a name like mywebsite.com to a series of numbers like 107.22.55.26. See IP, IP address.

DSL Digital Subscriber Line. A dedicated digital circuit between a residence or business and a telephone company’s central office. It allows high-speed data, voice, and video transmissions over existing twisted-pair copper plain old telephone service (POTS) telephone wires. See broadband.

dual-bandA device that is capable of operating in either of two frequencies. On a wireless network, dual-band devices are capable of operating in the 2.4 GHz (802.11b/g) or 5 GHz (802.11a) bands.

encryption A mechanism for providing data confidentiality. See WPA, WPA2.

Ethernet The most popular international standard technology for wired local area networks (LANs). It provides from 10 Mbps transmission speeds on basic 10Base-T Ethernet networks to 100 Mbps transmission speeds on Fast Ethernet networks, 1000 Mbps on Gigabit Ethernet, and 10,000 Mbps on 10 Gigabit Ethernet.

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Glossary

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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 MAC Address Access Control Password Protection and EncryptionTransmitter Power Control Security for AirPort Networks in Businesses and ClassroomsWi-Fi Protected Access WPA and WPA2 Radius SupportWPA 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 To set up your wireless device manually If you don’t see your wireless device in the listSetting Up the AirPort Extreme Network If you can’t open the wireless device settingsAirPort Network Designs Give the Device a Name Wireless Device SettingsChange the Device Password Other InformationSet Device Options Wireless Network SettingsSetting the Wireless Mode Naming the AirPort Extreme NetworkChoosing the Radio Mode Password-protect Your NetworkChanging the Channel Setting Wireless Options Setting Additional Wireless Options Use the Wireless Options pane to set the followingConfiguring 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 using Windows To configure TCP/IP on client computersAirPort Network Designs You’re Using an Existing Ethernet Network What You Need for an Ethernet ConnectionWhat to Do AirPort Network Designs AirPort Extreme Ethernet WAN port Time Capsule Setting Advanced Options Setting Up Roaming To set up roamingExtending the Range of an 802.11n Network To extend the range of an 802.11n networkControlling the Range of Your AirPort Network To shorten 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 Enterprise network To set up a WPA or WPA2 Personal networkSetting Up Access Control To set up the access control listUsing a Radius Server To set up authentication 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 Customizing the IPv6 firewall Setting up IPv6To adjust IPv6 firewall settings To manually set IPv6 optionsSharing and Securing USB Hard Disks on Your Network To share a hard disk 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 Hardware Addresses How Information Reaches Its DestinationPackets and Traffic IP AddressesUsing the AirPort Extreme Base Station Rules for Sending Information ProtocolsBase Station Interfaces Time Capsule Interfaces Using the Time CapsuleUsing the AirPort Express AirPort Express InterfacesApple Wireless Device Functions Items That Can Cause Interference with AirPort Glossary Glossary Glossary Glossary Glossary Glossary Glossary Glossary