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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 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
> side.
> - 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

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