Date: Wed, 15 Oct 2008 20:40:48 +1000 From: Da Rock <rock_on_the_web@comcen.com.au> To: freebsd-questions@freebsd.org Subject: Re: How to get my Dad's Win2k system to access internet through my FreeBSD 6.2 system Message-ID: <1224067248.3458.34.camel@laptop1.herveybayaustralia.com.au> In-Reply-To: <gd1t24$q3s$1@ger.gmane.org> References: <48F43EB1.40304@gmail.com> <gd1mi1$5tl$1@ger.gmane.org> <20081014101733.GA47158@icarus.home.lan> <gd1t24$q3s$1@ger.gmane.org>
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On Tue, 2008-10-14 at 06:46 -0400, Michael Powell wrote: > Jeremy Chadwick wrote: > > > On Tue, Oct 14, 2008 at 04:55:11AM -0400, Michael Powell wrote: > [snip] > >> Next, you will want to configure your FreeBSD machine as a NAT gateway. > >> In your /etc/rc.conf you will want something like gateway_enable="YES" > >> and some form of firewall initialization[1]. The gateway_enable is what > >> allows the forwarding of packets between your rl0 and your rl1, but the > >> activation of NAT functionality is usually a function contained within a > >> firewall. So conceptually, the firewall will be "in between" rl0 and rl1. > >> > >> There are three different firewalls you can choose from. Configuring the > >> firewall is usually where the inexperienced get stuck. This subject > >> material is beyond the scope of this missive, and you would do well to > >> start reading in the Handbook. But essentially, when you configure NAT in > >> the firewall your rl0 (connected to the ISP) will be assigned a "Public" > >> IP address and the NAT function will translate between "Public" and > >> "Private". > > With respect to "NAT", the caveat here is the assumption that your DSL/Cable > modem is *not* already performing NAT. The situation you do not want to get > into is having *two* NATs. The content herein is assuming that the external > (rl0) interface is getting assigned a "Public" IP from the ISP. > If this is the case wouldn't the OP set router_enable=YES instead of gateway?
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