Date: Wed, 20 May 1998 11:25:18 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Forrest Aldrich <forrie@navinet.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Masquerading issues Message-ID: <Pine.BSF.3.96.980520111923.28576Y-100000@gdi.uoregon.edu> In-Reply-To: <199805192137.RAA09276@dns.navinet.net>
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On Tue, 19 May 1998, Forrest Aldrich wrote:
> It mentioned using NATD, which I'm not familiar with, but I was curious if
> this was the only approach... or preferred.
If you are going over a PPP connection it's easier to use ppp -alias, but
otherwise you have to use ipfw/natd.
> I have a cable modem which receives a dynamic IP address from the cable
> company, so, I have to devise a means such that the gateway machine I
> create will go out to the cable modem (like Windoze95 does) look for the
> dhcp broadcast, get the IP address, set it, and then do IP masquerading. I
> figured I would create an RFC network internally and run dhcpd on that
> gateway so that my Windoze boxes will just boot up when on the LAN.
That sounds like a good way although if you have a small homenet you can
just static everything. You can get a DHCP client for FreeBSD from the
isc-dhcp2 port. For our homenet I plan on running DHCP, but we have 12
computers between three of us and we will no doubt have guests. :)
Actually doing this is really easy:
1. Buy another ethernet card if you haven't already. Configure it for the
homenet side.
2. Install the isc-dhcp2 port to get dhclient. Set up dhclient to run on
the cable modem interface only (`dhclient de0` or whatever you have)
2. Set up natd as described in the natd(8) manpage, section `RUNNING
NATD'.
3. Reboot to test and enjoy.
Doug White | University of Oregon
Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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