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Date:      Tue, 25 May 1999 16:30:07 -0700
From:      Ludwig Pummer <ludwigp@chip-web.com>
To:        Sergei Vyshenski <svysh@rsfq.npi.msu.su>, freebsd-questions@freebsd.org
Subject:   Re: IP fixed to Ethernet address
Message-ID:  <4.1.19990525162434.00a78b80@mail-r>
In-Reply-To: <3.0.5.32.19990525131548.007cac00@rsfq.npi.msu.su>

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At 02:15 AM 5/25/1999 , Sergei Vyshenski wrote:
>Is it possible to fix IP addresses to Ethernet addresses
>inside a local net? So, that root users of workstations within 
>the local net can no longer change their IP addresses without 
>permission of network admin?

Others have already pointed out that root users on the workstations can do
pretty much anything they want.

However, you could use 'arp -s <ip addr> <ethernet_addr>' so that your
FreeBSD machine will still speak to the correct machine for the given IP
address. Just do an 'arp -a' when all of the IPs are set correctly and copy
down the corresponding ethernet addresses. Of course, unless other machines
on the network are similarly configured, a workstation user could still
change his IP and mess up other systems on the LAN.

--Ludwig Pummer ( ludwigp@bigfoot.com ) ICQ UIN: 692441


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