Here's our Hardware Tip for.. January 12, 2007
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Extending Your Wireless and Wired Networks
You can add additional wireless devices to your wireless network to enable you to cover more area, or to give you greater bandwidth over which to communicate. You can also extend your coverage by wirelessly connecting two or more LANs. Because very few people have completely wireless networks, nearly all networks start out as wired LANs to which wireless capabilities are added. Wireless networking can extend your network to places that are either difficult or impossible to run a wire to. Wireless links can serve as bridges between two LAN islands. Given the right antennas, you can create wireless network links up to 10 miles in distance with 802.11 technology. That makes wireless technology useful for bridges across a campus, a city, a county, or anywhere else where you need a long distance or temporary link.
Given these uses of wireless networking technology it is the natural next step to want to extend your network's range further. Perhaps you have a bedroom on another floor at the far end of your home or you want to extend your network out to your patio where you can work in the sunshine; or perhaps you have a network running in your shop or guest home that you want to connect to another network in your house. In this chapter you'll learn how you can create multi-zone networks in your home and small office.
Additional networks and zones mean additional possible points of entry for outsiders trying to gain unwanted access to your systems. That's true of any situation where you add complexity to a computer network. So we'll also take a look at what the security concerns are and how you can manage them. However, having multiple networks also means that you have additional tools to make things tougher for the bad guys, too. By applying techniques like protocol isolation (proxy servers), firewalls, software traps such as honey pots, and so on, you can make your primary data networks more secure.