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Date: Thu, 23 Aug 2007 16:52:49 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: "Bahman M." <b.movaqar@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Minimal gateway hardware configuration
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> (cheap) PC to act as the gateway. The hardware specification is
> CPU: Pentium II at 433MHz
> RAM: 128MB
> HDD: IDE 4GB
> LAN Card: D-Link 538FE
>
> Internet connection is a slow one below 512Kbps and there is only one
> other node than the gateway in the network.
>
> Is the configuration enough?

for pure gateway/nat 486 with 8MB RAM is enough with netbsd, and with 
freebsd will be too but i'm not sure FreeBSD can be used on 8MB, for sure it can 
on 16.

i'm using such configurations (486/25 to 50, 8MB RAM) many places. 
hardware was for free.

on machine you specified you may use squid and make your mailserver etc. 
without problems.