Bridge Help

[Brent]

Ok guys this will probably be the first of many questions. I am new to
OpenBSD. I have briefly used FreeBSD before but its been a very long time
and lightly used linux. Anyways. I am trying to set up a firewall for home
network. I have read that the ip-less bridge is the best way to go because
an attacker doesn't really have anything to attack (unless he can somehow
attack it with malformed packets). Anways this is the first time i have ever
set up a bridge so this has got me quite confused. I Have two network cards
in my computer. On set up for the WAN (CableModem) and one set up for the
internal network. So neither of these cards with have an ip address correct?
Don't you have to obtain an ip address for your network card for your cable
internet to work correctly? How do you set up all your client computers on
the network so they have internet access? I mean you can't type a gateway ip
since neither of these cards have an ip address as far as i know. How about
dns? Do you just type in the dns address that you know your provider uses
directly? My main confusion i guess is how do packets know where to that are
on the bridged (internet) network since there is no gateway? Also i thought
cable providers use both the MAC Address from your cable modem & network
card and if you don't have both it won't work. Since your network card is
going to be invisible how would this all work? Any help would be
appreciated.

thanks,
Brent

[Brent]

Well i think i figured it out. If you have an ISP that dynamically assigns
addresses to whatever it is plugged into you might as well forget it. You
can possibly still do it by having a device that does nat in front of your
ip-less bridge but either you need another bsd machine (forwarding on and pf
filtering off) or a true router. If you try to put a cheap NAT router in
there it will filter packets and thats probably not what you want unless you
want a more advanced firewall sitting behind this one. This is really
confusing because a lot of tutorials lead you to believe this is possible
for normal home use. I guess i will just be setting up a Normal OpenBSD
firewall now.
"Brent" <bre...@spam.hotmail.com> wrote in message
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