On 8/9/07, poncenby <smythe@poncenby.plus.com> wrote:
quoted text
> List
>
> What options are there when you have multiple IP addresses and 1 openbsd
> 4.1 box with two NICs acting as a firewall?  The Internet goes into NIC1
> and a switch (with boxes plugged in) goes into NIC2 (10/8 address
> range). Is the alias command used in hostname.if files the only way of
> utilising these multiple IPs and guaranteeing the openbsd firewall is
> protecting the boxes plugged into the switch on NIC2?
>
> and also, am I right in thinking rdr in PF is for forwarding individual
> ports and binat is best used for directing all traffic to an external IP
> to an internal address? can this internal address be a public IP or RFC1918?
>
> apologies for stupidity of these questions
>

Welcome!
I've never set up bridging (see bridge(4)) myself, so I'm not even going to try.
See the FAQ.
http://www.openbsd.org/faq/
http://www.openbsd.org/faq/pf/