Special Notes for Cable Service
Some cable ISPs can provide you with multiple IP addresses so you can connect multiple computers directly to your cable modem, without a router. This is scheme D in Figure 19.1. It’s a very simple setup, but we strongly urge you not to use this type of service. You can’t take advantage of file and printer sharing on such a network.
(Now, some ISPs provide you with a combination modem and router in one box. That would be fine; there’s still a router in place, and you have scheme C. What we’re talking about here is a plain cable modem without a router.)
If you want to take full advantage of having a LAN in your home or office, use scheme C instead. Simply add an inexpensive connection-sharing router—at a cost of ...
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