From owner-freebsd-chat  Thu Feb 15  6:43: 1 2001
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Date: Thu, 15 Feb 2001 07:42:06 -0700
To: Dag-Erling Smorgrav <des@ofug.org>,
	Dale Chulhan - Home <dchulhan@uwi.tt>
From: Brett Glass <brett@lariat.org>
Subject: Re: Reserved IP Addresses
Cc: "chat@FreeBSD.ORG" <chat@FreeBSD.ORG>,
	My List <TheTechies@onelist.com>
In-Reply-To: <xzplmr8rw64.fsf@flood.ping.uio.no>
References: <Dale Chulhan - Home's message of "Thu, 15 Feb 2001 07:38:03 -0400">
 <3A8BBF9B.A990C816@uwi.tt>
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At 05:02 AM 2/15/2001, Dag-Erling Smorgrav wrote:

>RFC1918 <URL:http://www.ofug.org/rfc/rfc1918.txt>. To make a long
>story short, 10.0.0.0/8, 192.168.0.0/16 and 172.16.0.0/12 are reserved
>for use on private networks that are either not connected to the
>Internet, or connected through a non-forwarding or masquerading
>firewall.

These are the addresses that are reserved by standard. Others, as in
Dale's message, are reserved by fiat! For example, HP has grabbed,
without authorization, a bunch of IANA "experimental" addresses for 
its JetDirect printers and print servers. No one gave them the 
addresses; their equipment JUST TAKES THEM. If you let packets for 
them through your firewall, folks may be able to commandeer your 
printers.

There really should be a good list of addresses that are reserved
not only by RFC1918 but also by "land grabs."

--Brett





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