That allows the computer to connect to the interenet, but unfortunately for us that gateway is not part of your home network - rather it is a separate network formed between the computer connected to the cable/DSL modem and the ISP itself. The computer in your small network which is directly connected to the cable or DSL modem is provided with a default gateway by the Internet service provider.
So, without a gateway there is no way for the other computers in your network to receive or pass information to the other networks, and consequently, they have no Internet access. Put it this way, if your computers are on one network and every other computer connected to the Internet is on a different one, to pass information across network boundaries you need a device which is connected to both networks and equipped to decide whether information from one network should go out to the other network, and vice versa. The secret is that everything comes down to having a gateway.Ī gateway is a computer or device than can route data between different networks. Setting up a computer to share its internet connection should be easy.After all, you've successfully networked your computers together and even shared files with all your home computers, so why not the Internet? Well if you have a small home network of computers all connected and have tried to open up a browser, you've probably found out that things aren't quite as straight forward as connecting one machine with an Ethernet cable to the computer that has the DSL/cable modem.
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