![]() ![]() ![]() General Networking Physical Components and Functions This configuration is not normally used anymore. This computer functions effectively as a NAT Router, and must be left switched on for the other computers to access the Internet. It requires that one computer be designated as the sharing computer (the computer with the Internet connection). ![]() Internet connection sharing allows you to share an Internet connection with other computers on a Local/home Network. Here is a short video explaining how the computer firewall works. Skype you will find that they change the firewall settings. This firewall is less secure than the one built into your router/hub but it is normal to leave it enabled on your computers. If you are using Windows XP (or above) then you also will have firewall on your computer. See Port forwarding and Internal and external IP Addresses. NAT effectively isolates your home network from the Internet. Small networks use a firewall/NAT router combination in which a single device acts as a NAT router and firewall. It effectively acts like a one way digital gate blocking access to your network from devices on the Internet, but at the same time allowing devices on your network to connect to devices on the Internet. Firewall and NAT RouterĪ firewall functions like a router except that it blocks traffic from the external network according to user configured rules.Ī firewall protects your home/small business network computers and devices from intruders on the Internet. Used to filter out DSL signals from telephone signals so that you can access the internet and use the telephone simultaneously. It is usually built into the Internet/broadband router and not normally purchased as a separate component. This converts digital signals into analogue signals that are suitable for sending over a telephone line. The diagram below shows a typical home or small office network layout. Internet Connection Components and Functions You should also understand the Internet services that are essential for connecting to and using a home network and the Internet. In this tutorial we look at the various components that you need to create a computer network and connect it to the Internet.Īt the end of the tutorial you should understand what devices are required to create a home network and what functions they serve. An Internet connected home/home office network, consists of a variety of hardware and software components. ![]()
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