[TriLUG] Newbie: help needed with building linux firewall
Fri, 8 Mar 2002 10:23:37 -0500
> Have you loaded the modules for each network card? and configured the
> interfaces so that they load. Can you ping each interface (externally
I'm slightly familiar with what Tim is doing, so let me see if I can help
He's trying to build a linux firewall ( no NAT / masquerading,
that's handled by the router provided by the ISP ). Routing is
turned on, but right now it doesn't appear to be routing anything.
One problem he's had, that's made it difficult to diagnose problems, is
the thing with the interfaces behaving weirdly, that he was describing in
this first e-mail. He has three NIC's, (all with the modules loaded
assigned as eth0, eth1, and eth2. They each have an address, like
and 10.0.0.5. Strangely enough though, you can down eth1 and eth2, but
responds to ping requests sent to 10.0.0.3, 10.0.0.3, or 10.0.0.5.
I think he wants to figure out why that's happening, as a first step to
this thing straightened out....
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