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Re: setup for a public /24 network: msg#00027

security.firewalls.pfsense.user

Subject: Re: setup for a public /24 network


I'm afraid I will need some more help with this. (Yes, I am
really that retarded). I can't play around with the designated
systems right now because they're a) down b) remote, and I won't
have any quality time in the colo, so I would like leaving the
system in a minimally working setup which I can then modify
remotely in a series of safe steps, each more or less possible
to recover from (in a pinch, asking for a remote console).

I've since figured out that what I originally wanted was
a filtered bridge -- but that setup is incompatible with

http://cvstrac.pfsense.com/tktview?tn=1194

carp, so I wouldn't be able to get a failover setup a la

http://pfsense.iserv.nl/tutorials/carp/carp-cluster-new.htm

Assuming I start with two systems configured identically as
a filtered bridge (only one of which is active as a firewall
at a time, of course), is there a safe migration pathway
to a real CARP failover cluster? Oh, I presume that has been
answered with
http://forum.pfsense.org/index.php?PHPSESSID=895d849f5301db2b5cd3c7f4a50af59b&/topic,1903.new.html#new
already.

On Wed, Dec 20, 2006 at 07:02:10PM -0000, Greg Hennessy wrote:
>
> > interface itself? Perhaps that's the wrong approach.
> > Do I need WAN/LAN bridging? Something else?
>
> Start subnetting, create a /29 for the external untrusted interface(s) +
> vips.

With VIPS you mean virtual IPs for the firewall, and CARP interfaces.
A /29 has 8 total IPs, 6 of them usable. Idiot question: why do I need so many?

> Take the remainder and salt and pepper amongst dmz interfaces as required.

My problem is that I only have two interfaces in the system, WAN and LAN.

> If you're going to use vlans, do not mix zones of trust on the same switch.

With trust, are you referring to lists of trusted MACs, and is this port-based
or IEEE 802.1Q VLAN?

--
Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
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