Date: Tue, 25 Dec 2001 15:22:08 -0500 From: "Crist J. Clark" <cristjc@earthlink.net> To: "Oles' Hnatkevych" <gnut@fc.kiev.ua> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: arp, firewall, etc Message-ID: <20011225152208.B136@gohan.cjclark.org> In-Reply-To: <02901731.20011224094945@fc.kiev.ua>; from gnut@fc.kiev.ua on Mon, Dec 24, 2001 at 09:49:45AM %2B0300 References: <02901731.20011224094945@fc.kiev.ua>
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On Mon, Dec 24, 2001 at 09:49:45AM +0300, Oles' Hnatkevych wrote:
> Hello freebsd-questions,
>
> how do I prevent users from setting IP address
> manually so they can not use another one's IP
> address.
>
> my first thought was to set permanent entries
> in ARP table
Then just use the other MAC address too.
> is there any other way to cope with that?
Only accept packets from IP address a.b.c.d on the wire that is
connected to the machine a.b.c.d.
--
"It's always funny until someone gets hurt. Then it's hilarious."
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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