
254 switching to the mac: the missing manual
That’s all there is to it. Your Mac will now switch connections—not just each time you
go online, but even during a single Internet session, if a faster connection becomes
available.
Internet Sharing
If you have cable modem or DSL service, you’re a very lucky individual. Not only do
you benefit from spectacular speed when surfing the Web or processing email, but
your connection is on full-time. You never have to wait for some modem to dial,
screeching all the way, and wait again for it to disconnect. It’s just too bad that only
one computer in your household or office can enjoy these luxuries.
Fortunately, it doesn’t have to be that way. You can spread the joy of high-speed
Internet to every computer on your network in any of these ways:
• Buy a router. A router is a little box, costing about $40, that connects directly to the
cable modem or DSL box. In most cases, it doubles as a hub, providing multiple
Internet jacks into which you can plug your Macs and PCs. As a bonus, a router
provides excellent security, serving as a firewall to keep out unsolicited visits from
Internet hackers. (If you use one, you can turn off Mac OS X’s own firewall, as
described earlier in this chapter.)
• Buy an AirPort base station. Apple’s wireless 802.11b (AirPort) or 802.11g (AirPort
Extreme) base stations have a router built in.
• Use Internet Sharing. ...