From owner-freebsd-security  Mon Sep 28 15:38:07 1998
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Date: Tue, 29 Sep 1998 00:37:31 +0200
From: Eivind Eklund <eivind@yes.no>
To: Harold Gutch <logix@foobar.franken.de>, Ian Kallen <ian@gamespot.com>,
        freebsd-security@FreeBSD.ORG
Subject: Re: corrupted libwrap?
References: <Pine.BSF.3.95q.980921110929.11736A-100000@mail.gamespot.com> <19980921221727.A20938@foobar.franken.de>
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In-Reply-To: <19980921221727.A20938@foobar.franken.de>; from Harold Gutch on Mon, Sep 21, 1998 at 10:17:27PM +0200
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On Mon, Sep 21, 1998 at 10:17:27PM +0200, Harold Gutch wrote:
> On Mon, Sep 21, 1998 at 11:20:39AM -0700, Ian Kallen wrote:
> > % telnet freebsd.hopeless.net
> > Trying 192.169.1.55...
> > Connected to freebsd.hopeless.net.
> > Escape character is '^]'.
> Off topic, but:
> 
> $ host freebsd.hopeless.net
> Host not found.
> 
> If you want to use private IPs, I suspect the 256 class
> C-networks with IPs ranging from 192.168.0.0 to 192.168.255.255
> are what you're looking for (192.169.x.x is NOT in this range).

Just to supply a little more information: There are 3 ranges of
private IP address, and recommended use is documented in RFC 1918.

The address ranges are


     10.0.0.0        -   10.255.255.255  (10/8 prefix)
     172.16.0.0      -   172.31.255.255  (172.16/12 prefix)
     192.168.0.0     -   192.168.255.255 (192.168/16 prefix)

... where (according to pre-CIDR) 10. would be viewed as a single
A-net, 172.16 would be viewed as a set of B-nets, and 192.168 would be
viewed as a set of C-nets.

The non-CIDR view is outdated, but may be necessary to work with
ancient equipment.

Eivind.


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