Date: 5 Jun 2001 04:49:28 MDT From: J S <spl1t_h0r1z0n@usa.net> To: Andrew Hesford <ajh3@usrlib.org>, FreeBSD-questions <freebsd-questions@freebsd.org> Subject: Re: [Router/Firewall] Message-ID: <20010605104932.9378.qmail@www0a.netaddress.usa.net>
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Andrew Hesford <ajh3@usrlib.org> wrote: (cut)
> =
> Let's say the external interface on the FreeBSD machine, xl0, is
> 128.252.130.211 and it connects directly to the T1 through a dedicated
> router and some crossover cable. dc0, which is connected to my internal=
> network, will be called 128.252.130.220.
if you are using the default mask (255.255.255.240/0xfffffff0) on both
interfaces, you would need to make the ip address of dc0
128.252.130.225/0xfffffff0. each interface on it's own subnet. however,=
this
wastes precious ip address. if you are running a classless routing proto=
col,
you could further subnet the 128.252.130.208 subnet, with say a
255.255.255.252/0xfffffffc0 mask, which would give you four additional su=
bnets
with two ip's each for addressing routers/switches/etc in your network.
|-------|
|gateway|
|_______|
|
128.252.130.209/30
|
|
128.252.130.210/30
|(xl0)
|-------|
|FreeBSD|
|_______|
|(dc0)
128.252.130.213/30
|
|
128.252.130.214/30
|
|----------|
|lan switch| =
|_ router _| =
with each interface on it's own subnet, you can now use a default route f=
rom
your network to the isp.
i'm still new to FreeBSD so i can't tell you how to configure the interfa=
ces
or routes. =
HTH
joshua
Joshua Smith, CCNA
Data Center Technian
USA.NET
joshua.smith@corp.usa.net
"Walk with me through the Universe,
And along the way see how all of us are Connected.
Feast the eyes of your Soul,
On the Love that abounds.
In all places at once, seemingly endless,
Like your own existence."
- Stephen Hawking -
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