Date: Mon, 05 Feb 2001 16:23:54 +1100 From: Tony Landells <ahl@austclear.com.au> To: Rob <europax@home.com> Cc: "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.ORG> Subject: Re: direct routing help needed Message-ID: <200102050523.QAA16754@tungsten.austclear.com.au> In-Reply-To: Message from Rob <europax@home.com> of "Sun, 04 Feb 2001 20:47:09 -0800." <3A7E304D.6AB8007D@home.com>
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Hi Rob,
In a nutshell, you can't route (directly) to something you're not
connected to. As soon as the IP address falls outside your subnet,
you need a gateway ON YOUR NETWORK to send it to.
If I'm reading your email correctly, both of these computers are
on the same switch, and then there's a single cable modem carrying
two different subnets:
-----
Host A ----- | s |
FreeBSD | | w |
-----------| i | cable
| t |-------modem-------Internet
-----------| c |
Host B | | h |
OpenBSD----- | |
-----
To avoid buying a router, you basically have to have both computers
on the same (IP) network.
The best way (IMHO) would be to throw another NIC in each computer,
connect them directly with a crossover cable, and configure them to
be on a common network (preferably from the RFC1918 selection).
If you don't want to spend any money, you may be able to do it by
configuring alias addresses on each existing interface which happen
to be in the same network. Again, you would want to pick from
RFC1918 addresses, and your service provider may get upset if your
boxes generate, for example, broadcast traffic for RFC1918 addresses
that get sent out through the cable modem.
Good luck,
Tony
--
Tony Landells <ahl@austclear.com.au>
Senior Network Engineer Ph: +61 3 9677 9319
Australian Clearing Services Pty Ltd Fax: +61 3 9677 9355
Level 4, Rialto North Tower
525 Collins Street
Melbourne VIC 3000
Australia
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