Apple AirPort Networks manual Rules for Sending Information Protocols, Base Station Interfaces

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So, your computer also has an Internet Protocol (IP) address that defines exactly where and in what network it’s located. IP addresses ensure that your local Ethernet network receives only the traffic intended for it. Like the hierarchical system used to define zip codes, street names, and street numbers, IP addresses are created according to a set of rules, and their assignment is carefully administered.

The hardware address is like your name; it uniquely and permanently identifies you. But it doesn’t offer any clues about your location, so it’s only helpful in a local setting. An IP address is like your street address, which contains the information that helps letters and packages find your house.

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 there’s 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:

ÂAirPort interface: The AirPort interface creates an AirPort network for AirPort- enabled 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.

ÂEthernet WAN (<) interface: Use the Ethernet WAN interface to connect DSL or cable modems and connect to the Internet.

ÂEthernet 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.

ÂUSB (d) interface: Use the USB interface to connect a USB printer or hard disk to the AirPort Extreme Base Station.

Status light

< Ethernet WAN port

G Ethernet ports

∏ Reset button

¯ Power port

d USB port

Security slot

Chapter 4 Behind the Scenes

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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 Password Protection and Encryption Transmitter Power ControlMAC Address Access 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 Wireless Device Settings Change the Device PasswordGive the Device a Name Other InformationWireless Network Settings Setting the Wireless ModeSet Device Options 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 Setting up IPv6 To adjust IPv6 firewall settingsCustomizing the IPv6 firewall 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 How Information Reaches Its Destination Packets and TrafficHardware Addresses IP AddressesUsing the AirPort Extreme Base Station Rules for Sending Information ProtocolsBase Station Interfaces Using the Time Capsule Using the AirPort ExpressTime Capsule Interfaces AirPort Express InterfacesApple Wireless Device Functions Items That Can Cause Interference with AirPort Glossary Glossary Glossary Glossary Glossary Glossary Glossary Glossary