Apple MC340LL User Guide - Page 27

• To share a single Internet connection with wireless computers, make sure "Distribute IP addresses" and "Share a single IP address (using DHCP & NAT)" are selected. If you have been given a range of public IP addresses by your ISP, you can select the "Share a range of IP addresses (using only DHCP)" option. • If you want to connect an Ethernet printer to the AirPort Extreme Base Station or use AppleTalk between wired and wireless computers, make sure the devices are connected to the Ethernet LAN (G) port on the AirPort Extreme Base Station. • Computers connected to the Ethernet LAN (G) port share Internet access and a single IP address (using NAT). • Enabling NAT lets you share a single Internet connection among several computers. Enabling DHCP lets the base station dynamically and automatically assign IP addresses to client computers, which simplifies each computer's TCP/IP configuration. By default, the base station allows devices and computers using Ethernet and wireless computers to communicate with one another using non-IP protocols. Note: If you are using an AirPort Extreme Base Station that supports Power over Ethernet (PoE), the "Share a single IP address (using DHCP & NAT)" option is not selected by default, and the base station is set up to act as a bridge. • If you want people joining your AirPort network to be greeted with a personal message, type it in the Message field. • If your AirPort Extreme Base Station has an internal modem, click the Dial-In tab to enable users to dial in to the AirPort Extreme Base Station from a computer modem over a standard phone line. Dialing in to your base station gives you access to your home network and the Internet through your home network Internet service provider (ISP). To set up your base station for PPP dial-in: a Connect a phone line to the modem (W) port on your base station. b Click Dial-In and enter the user name and password, and set other options. Because you set the base station to answer incoming calls, consider using a dedicated phone line for your base station. Other calls coming in on the same line could cause the base station modem to disconnect. You cannot enable PPP dial-in if the base station is set up to use a PPP connection to your Internet service provider. With PPP dial-in enabled, the AirPort Extreme Base Station is set to share a single IP address (using DHCP and NAT) only; it cannot share a range of IP addresses (using only DHCP). Note: If you dial in to your AirPort Extreme Base Station from a V.90 modem, the best speed you can expect is the V.34 speed of 33600 bits per second (bps). This is a limitation of the V.90 standard and is not caused by a problem with your modem or base station. Chapter 3 AirPort Network Designs 27