For anyone to use your Internet connection with a wireless adapter, you 
would have to be set up to use wireless connections. In which case you 
can enable WEP on your LAN and dissuade most interlopers from even 
trying to use your Internet connection.

There was/is another discussion on the same subject (different specific 
title) on this forum at the present time. You might be interested in it.

Tom Mayer

Jacqueline MacWhirter wrote:
> How to stop someone from using your  internet resource how can you 
> block them --I was asked this tonight  for an example suppose someone 
> had a wireless laptop and tapped into your internet resources - you 
> have high speed cable how could you block them ? Thank you Jacqueline 
> MacWhirter
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