On Thu, 13 Sep 2001 14:33:28 -0400
"Jonathan B. Bayer" <[EMAIL PROTECTED]> wrote:
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>
> Hello ,
>
> I'm trying to set up a firewall for my office using iptables. The system is a
>RedHat 7.1
> installation with all the latest updates.
>
> Once of the things we have here is that the external NIC (eth0) supports 4 IP
>addresses.
> The internal network is a 192.168.1. subnet.
>
> I'm trying to get this system to route packets going to one of the virtual IPs to
>one of
> internal system. But I can't figure out how. When I try the command, iptables
>rejects
> the virtual interface (see the output below).
>
> Any help would be appreciated.
Hey, JBB. First of all, go here to see a set of nicely documented iptables firewall
rules:
http://email.riverdale.k12.or.us/mailarchives/k12linux/1605.html
Note how he has defined his eth interfaces in the "Define additional inside devices"
section. I suggest
just defining your eth0:0, etc. aliases as LAN_DEV_2="eth0:0" etc., then issuing calls
to LANDEV_2 rather than eth0:0. It could be a limitation of how iptables parses the
rules. Note that the recently released iptables 1.2.3 contacined a fix so that
iptables-save/restore could properly handle an eth+
declaration.
jb
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