Date: Sat, 12 Dec 1998 11:51:35 +0200 From: Abid Atilay <atilay@ihlas.net.tr> To: freebsd-questions@FreeBSD.ORG Subject: Rule-based gateway selection Message-ID: <36723CA7.15C961BA@ihlas.net.tr>
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Hi,
I have a problem and need your help. Would you please help me.
I want to make rule-based gateway selection. My internal network is
connected to a
FreeBSD-current box and it has three ethernet cards. First ethernet card
is for internal
network, second ethernet card is attached to provider A's router and the
third one is attached
to provider B's router. All of my machines' default gateway is FreeBSD
box and its default
gateway is provider A's router. But I want to use provider B's router as
default gateway for
some of the machines. I used ipfw's fwd action but couldn't success.
|------| x.x.x.a |
|Router|---------| x.x.x.b |
internet --| A | | fxp2 |-------| |
|______| |---------|FreeBSD| z.z.z.254|Internal
| 3.0 |----------|Network
|---------|Current| fxp0 |
| y.y.y.d |_______| |z.z.z.1
|------| y.y.y.c | fxp1 |z.z.z.250
|Router|---------| |
internet --| B |
|______|
For example z.z.z.1 - z.z.z.100 will use x.x.x.a and z.z.z.101 -
z.z.z.250 will use y.y.y.c to
access internet. FreeBSD box's default gateway is x.x.x.a and (so) all
of the machines in the
internal network use x.x.x.a to access the internet. How can I use ipfw
fwd to route some of
the machines to y.y.y.c or is there any other way to do this?
I use a test rule like this:
#!/bin/sh
ipfw add 100 fwd y.y.y.c all from z.z.z.0:255.255.255.0 to any in via
fxp0
ipfw add 200 pass all from any to any
These rules can't help me and nobody can reach internet if I don't
delete rule 100.
Thank you very much.
Best Regards,
Abid Atilay
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