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Securing a Wireless Home Network Part VI
Prevent Unintentional Roaming
Wireless networks are a bit like cell phones. Your cell phone ties to find the closest cell tower so that you can get the most bars of signal strength to have high-quality voice calls.
Wireless NICs work in a similar way in that they try to find the wireless router that has the strongest signal. The assumption is that the router it finds is yours because it is the closest and therefore has the strongest signal. However, that is not always true. If you have poor signal strength in a particular room of your house and your neighbor's router actually has a better signal in that room,, your wireless NIC might try to roam onto your neighbor's router, unless you instruct it not to.
You do not want your laptop unintentionally hopping over to your neighbor's wireless router whenever it sees a stronger signal or for whatever reason loses connectivity with your own router.
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