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Date: Thu, 17 Feb 2005 17:56:33 -0500
From: David Wassman <myfreebsd@cox.net>
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To: "Michael L. Squires" <mikes@siralan.org>
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cc: freebsd-questions@freebsd.org
Subject: Re: Problem accessing net from a NAT Firewall
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Micheal,

The IP addresses are the same ones used in The Complete FreeBSD from 
Greg Lehey for the back end network. I can use 192.x.x.x or 172.x.x.x to 
see if they work. Will let you know. Thanks for the help.

David

Michael L. Squires wrote:

> I don't understand this entry:
>
> On Wed, 16 Feb 2005, David Wassman wrote:
>
>> # static address for internal interface
>> ifconfig_xe0="inet 223.147.37.1 netmask 255.255.255.0 broadcast 
>> 223.147.37.255"
>>
>
> This is a valid IP address, not one of the three sets of IP numbers 
> reserved for internal networks (you use one, 172.x.x.x, in your 
> firewall script).  Shouldn't the internal network address be one of 
> those three, i.e., one of 192.x.x.x, 172.x.x.x, 10.x.x.x ?
>
> Or I may not be understanding your setup at all.
>
> I have a cable model, FreeBSD 4.11 firewall/NAT, internal network 
> using 10.x.x.x numbers (bad choice, 10.x.x.x is used by Comcast/ATT, 
> etc.), 100Mbit switch, 1 Mac, 4 MS, 3 FreeBSD clients all using IP 
> numbers in the 10.x.x.x range.
>
> MLS
>
>