Date: Thu, 15 Oct 1998 18:20:18 -0700 (PDT) From: Bryce Newall <data@dreamhaven.net> To: "Stephen A. Derdau" <sderdau@ne.mediaone.net> Cc: FreeBSD Questions List <freebsd-questions@FreeBSD.ORG> Subject: Re: IP Forwarding Message-ID: <Pine.NEB.3.96.981015181348.19668Q-100000@ds9.dreamhaven.org> In-Reply-To: <36269327.CEA0DC01@ne.mediaone.net>
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On Thu, 15 Oct 1998, Stephen A. Derdau wrote:
> We'll I just got my system up and running not that long ago
> 1. had to install isc-dhcp2
Yup, got that already installed and working.
> 2. got natd working
On Thu, 15 Oct 1998, Julian Elischer wrote:
> you want the 'natd' "Network Address Translation Daemon" program
I found some info on natd just after I sent out that first mail. However,
I'm still a bit confused about something, from the list of requirements to
have in place before running natd. From what I'm reading, since my cable
ISP uses DHCP, I'll need to run natd with the -n and -dynamic flags.
What's getting me, though, is:
4. If you wish to use the -n or -interface flags, make sure that your
interface is already configured. If, for example, you wish to
specify tun0 as your interface, and you're using ppp(8) on that
interface, you must make sure that you start ppp prior to starting
natd.
The problem is that the interface is *not* configured when the machine
first boots up, or if the DHCP server decides to reboot and assign
everyone new IPs. While the FreeBSD box is waiting for an IP, or if the
DHCP server reboots, the ethernet interface has a "temporary" IP of
0.0.0.0. The question becomes, how do you get natd to not start until
*after* the IP is assigned? Or will the -dynamic switch handle that
eventuality?
Incidentally, is it still a good idea to have a second ethernet card to
handle the "internal" network, or is one card good enough to do the job?
Reason I ask is 'cause I'd like to configure a second IP address of
10.0.0.1 (with the other machines on my network being 10.0.0.2, 10.0.0.3,
etc.) so that I can assign the other machines a gateway of 10.0.0.1 and
not have to give them the actual public IP address of the ethernet
adapter, since that's likely to change. And I wouldn't be able to just
assign 10.0.0.1 as an alias to the existing adapter, I think, because when
the DHCP client gets a new IP, it'd blow away the aliased IP. How would
you make natd work using 2 ethernet adapters?
Thanks for the help (and thanks in advance for any additional help :) ),
Bryce
**********************************************************************
* Bryce Newall * Email: data@dreamhaven.net *
* WWW: http://home.dreamhaven.net/~data *
* "Insanity takes its toll. Please have exact change." *
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