If you're using DHCP, you could restrict connections by the ethernet
card's MAC address. Each ethernet card has an identifier that is guaranteed
to be unique (each vendor has a range of ids that they are allowed to use).
If the MAC address is not recognized, they don't get an IP address.
Here is an article that describes how to do it for Linux:
http://www.linuxfocus.org/English/May2000/article150.shtml
J
>-----Original Message-----
>From: Earl J. Green <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
>Date: Friday, January 05, 2001 1:39 PM
>Subject: Re: [cc] Starbucks Goes Broadband
>
>
>>At 12:31 PM 1/4/01 -0500, Bill Noel wrote:
>>
>>[snip]
>>
>>>We have been offering wireless 802.11 access in the cafe
>>>for free for about
>>>5 months (it's tough to charge when users can pull into the
>>>parking lot and
>>>surf without you knowing it). It really is pretty simple
>>>to manage.
>>
>>Hi Bill,
>>
>> If you had wanted to, you could probably prevent
>>unauthorized use of your wireless access by having a server
>>tie up the IP addresses that are not currently in authorized
>>use. You would have to gin up some software to lock and
>>unlock the IP addresses as needed. I have read of at least
>>one Wireless ISP who uses that approach to keep people from
>>connecting to his system without paying for
>>access. Obviously, a cybercafe system would have to be
>>designed with more frequent changes in mind, but it should
>>be do-able.
>>
>> Best regards,
>>
>> Earl
>>
>>
>>
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