Re: Firewall or bridge?
David Gaudine, 2003-Apr-14 12:11 -0400:
> I've been reading about firewalls, and can't figure out what to put in
> "interfaces" for my situation. I now think that the problem is I need a
> bridge rather than the kind of firewall I was reading about. My
> situation is:
> - Static IP with public addresses
> - Gateway 18.104.22.168 is on the "internet" side, all other 132.205.50.x
> on the "inside". This is why I can't figure out what to put in
> "interfaces", since the net mask would put the gateway on the wrong
> - router is far away, and expects to be connected to a switch. My
> understanding is that to use a firewall I'd have to get the gateway
> configured to address everything to my firewall, and I don't want to
> mess with the router.
> My questions are
> 1) Am I right about needing a bridge?
That's one option. I've heard that some firewalling is possible over
a bridged connection.
> 2) Normally a bridge has no IP address and can't be used to provide
> other services. It can't even be accessed remotely. Is there a way
> around that?
Not that I know of. You can consider useing NAT on the "inside" so
that you can route through your box.
Jeff Coppock Systems Engineer
Diggin' Debian Admin and User