Apple manual Security for AirPort Networks at Home, NAT Firewall, Closed Network

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AirPort Security	2

This chapter provides an overview of the security features available in AirPort.

Apple has designed its wireless devices to provide several levels of security, so

you can enjoy peace of mind when you access the Internet, manage online financial transactions, or send and receive email. The AirPort Extreme Base Station and Time Capsule also include a slot for inserting a lock to deter theft.

For information and instructions for setting up these security features, see “Setting Up the AirPort Extreme Network” on page 17.

Security for AirPort Networks at Home

Apple gives you ways to protect your wireless AirPort network as well as the data that travels over it.

NAT Firewall

You can isolate your wireless network with firewall protection. Apple wireless devices have a built-in Network Address Translation (NAT) firewall that creates a barrier between your network and the Internet, protecting data from Internet-based IP attacks. The firewall is automatically turned on when you set up the device to share a single Internet connection. For computers with a cable or DSL modem, AirPort can actually be safer than a wired connection.

Closed Network

Creating a closed network keeps the network name and the very existence of your network private. Prospective users of your network must know the network name and password to access it. Use AirPort Utility, located in the Utilities folder in the Applications folder on a Macintosh computer using Mac OS X, or in Start > All Programs > AirPort on a computer using Windows, to create a closed network.

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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