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Date:      Sat, 17 Apr 1999 15:14:45 +0200 (MET DST)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        thomas.uhrfelt@plymovent.se
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: DHCP - IPFW - Controlling IPs
Message-ID:  <199904171314.PAA16705@labinfo.iet.unipi.it>
In-Reply-To: <01BE88F5.C4660D20.thomas.uhrfelt@plymovent.se> from "Thomas Uhrfelt" at Apr 17, 99 05:14:06 pm

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> I have now sucessfully installed ISC:s DHCP server on my FreeBSD box to pass out IP:s etc. to the users on our local network, but I
...
> networks. Is there any way that I can check ( periodically or all the time ) that the IP the packet is coming from really is the one that

the thing you can do is to hardwire (i think there is an option in
the 'arp' command, but you might want to make it work together with
DHCP) your ARP table so you might be passing out traffic, but the
pkts generated by your router will never get to the correct
destination.

But other than that, no, IPFW does not currently even know the MAC
address and so cannot check.

	luigi



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