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and still have internet connectivity. In a home environment, some computers could be upstairs, some downstairs, and assorted spots all over the house. Considering clutter, in many environments it’s not practical to have cords all over the place, or go through the time consuming, expensive task of wiring the building or house. Additionally, wireless can support many more clients; with a wireless router, one can have 50 or more people connecting through that one access point, while home use wired routers usually offer significantly less. (usually 4-8). Another main reason is that now wireless speeds are actually surpassing the speeds of a wired home network, connecting at speeds of up to 125Mbps, which is a 25% increase over the current 10/100 Ethernet that most are using. So in short, wireless networks are fast, convenient, clutter free, and just plain nice, but these features come at a price, if not implemented correctly.

While it is possible to make a wireless network as secure, if not more so, than a wired network, these steps are very rarely taken, which is the first and main downfall to wireless. It’s a new technology to most users, and many aren’t aware of how to properly

 
 
Figure 1: Setup for Wireless Encryption
implement a wireless network. The main thing about wireless is that if you don’t take steps to validate users on the network, as well as encrypt the transmissions with a network key, the information is in the open air, with anyone within a range of up to a block or so, with a wireless card, could potentially enter your network, browse your shared documents, capture passwords, even install software just to name a few. “War driving” is the name that has been given to this practice, even some larger businesses have fallen prey to hackers with laptops, driving around outside, infiltrating company information.

How can this wireless be made 100% safe? Well there is no 100%

fool proof way to make your wireless network secure, but this holds to wired networks as well. However, we can take some steps to drastically reduce this risk.

First, enable an encryption protocol on the network (1a). There are two main types, WEP and WPA (1b). WEP is 5 groups of 2 hex characters (64-bit), while WPA is 13 groups of 2(128 bit), which makes WPA a better encryption, but not all devices support this yet. After you choose and encryption method, you make a pass phrase to generate the key. (1c) Based on the pass phrase u choose, a set of network keys are generated. (1d) What these do is run all network traffic through an encryption key

 
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ClearDesign LLC Newsletter · Volume 1 · Spring 2005
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