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|Desktop Apps Training - Wireless|
In order to set up and use a wireless network you will need to understand several basics about networking.
Networks can be as simple as two computers connected using a single network cable or as complex as a wide area network connected with wireless technology.
A network by definition is the connection of two or more computers for the purpose of sharing data, printers, applications or an Internet connection.
Network size often determines complexity of the network. A home network of three computers is a simplified version of the Internet.
Wireless Access Point
Wireless networking requires a physical device that sends radio waves to the computer. This physical device is called a wireless router or wireless access point. A wireless router connects the internal network to the Internet and has a firewall to protect the inner network. A wireless access point connects the wireless user to a local network.
The wireless access point simply provides connectivity to the rest of the network. It provides the convenience of wireless and the availability of resources found on the network like printers, servers, etc. So the purpose of the router is primarily to connect to the Internet and to provide the protection afforded by a firewall.
Setting up the wireless router is more difficult as you will need to setup a firewall to protect the internal network from attack coming from the Internet connection.
Setting up wireless technology requires some understanding of how it works so that you may understand the limitations and requirements needed to use wireless technology. One of the major limits of wireless technology is the range. A typical wireless device like a router or access point will only have a range of about 300 feet. This could be much less if it has the interference of heavy building materials like stone, brick and steel. The other side of the problem is that your wireless device may extend the range into your neighbor's front room where your neighbor could use your network if you did not restrict the use of the network.
In this example, the black circle has access to several wireless networks. It is important to protect your internal network from access that you do not want to provide.