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Date:      Fri, 27 Apr 2001 20:00:40 -0500 (CDT)
From:      Nick Rogness <nick@rogness.net>
To:        Rick Duvall <maillist@coastsight.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: IPFW and MAC Addresses
Message-ID:  <Pine.BSF.4.21.0104271957180.60346-100000@cody.jharris.com>
In-Reply-To: <Pine.BSF.4.21.0104271627330.46277-100000@ns1.coastsight.com>

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On Fri, 27 Apr 2001, Rick Duvall wrote:

> Is there a way to do IPFW on a MAC Address level?  What I am wanting
> is to only allow certain NIC's to pass packets to the Internet, as
> long as those specific NICs have a certain IP address.
> 

> Reasoning:  I have a wireless LAN I am providing internet over to
> customers.  Like all wireless lans, it is layer 2.  So, I can see the
> MAC address on the customer's end.  But, I don't want the customer to
> be able to just grab any IP address they can get their hands on. I
> want to assign them 1 IP address, and have it so that if they use any
> other IP address other than that one, they won't be able to pass any
> packets on my network.

> 
> Is this possible?

	I believe you can "hardwire" their MAC in your arp table 
	(arp -s) forcing only certain IP's to have certain MAC's


Nick Rogness <nick@rogness.net>
 - Keep on Routing in a Free World...
  "FreeBSD: The Power to Serve!"


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