OpenBSD Router Guide
In this guide we're going to take a look at how we can use cheap and "low end" hardware to build an amazing OpenBSD router with firewalling capabilities, segmented local area networks, #DNS with domain blocking, #DHCP and more. We will use a setup in which the #router segments the local area #network ( LAN ) into three separate #networks, one for the grown-ups in the house, one for the children, and one for public facing #servers, such as a private web #server or mail server. We will also look at how we can use DNS to block out ads, porn, and other websites on the Internet.
@hucste No, i'm not the author of this interesting article. I have an old Netgear too so .. i can't help you ;) We should ask the OpenWRT communauty.