I'm currently using a Q650 running 1.5BETA_2 (soon to be upgraded) as 
a firewall and router for DSL. When I first set it up, I used Eric 
Winkler's Firewall/Router distribution, which worked great.

His webpage is at:
http://users.erols.com/ewinkler/

As you already have NetBSD installed, you might just download it and 
use it as a reference. That's what I did when I wiped my system and 
installed 1.5BETA_2.

Hope this helps!
Daniel

At 9:07 PM -0700 12/8/2000, Chris Tucker wrote:
>Hello, I have a NetBSD 1.4 machine that has two NICs.
>
>We have a DSL line coming into our place and I'd like to hook it up the
>BSD box to get my other two computers online.
>
>I don't have the numbers with me, but lets say the ISP gave me the
>following info:
>
>IP address: 1.2.3.4 (ok, i know...i'm just making this up)
>netmask: 255.255.255.252 (i remember that one)
>router: 1.2.3.5 (also made up)
>
>OK, so I plug the DSL line into one NIC on the BSD box. I plug an ethernet
>cable into the other NIC and hook that up to the hub.
>
>What do I need to do to rc.conf, hosts, ifconfig.ae(1/0), ipnat.conf, etc?
>
>My LAN is using 192.168.2.x as its addresses, with 192.168.2.1 as the NAT
>box.
>
>Any help appreciated; extra explanation of the concepts involved here also
>very appreciated :)
>
>Chris