rdr-to works perfectly! my hair is droppng off from the speed, without
ADs :) Many thanks. Wishing a great year-end for everybody!! Sent: Thursday,
December 19, 2019 at 8:50 PM
From: "Anthony O' Brien" <anth...@bearonis.com>
To: "lu hu" <luhu8...@mail.com>
Cc: misc@openbsd.org
Subject: Re: OpenBSD pf - redirect all DNS queries to local DNS server
Long time reader, first time writing in... > The big question: Is there
any DOC for OpenBSD about this? What pf rules > needed to redirect any
DNS server (ex.: 8.8.8.8 or 1.1.1.1) requests to the > DNS server running
on the ROUTER, coming from the CLIENTS?
You can use rdr-to[0] with pf to redirect all DNS queries to the DNS
resolver running on the router. A rule in pf.conf would look something
like:
pass in on $int_if proto { udp , tcp } from any to any port domain \
rdr-to $dns_server port domain
Ted Unangst has short write-up about turning your network inside out to
do
just this[1].
[0]: https://man.openbsd.org/pf.conf.5#rdr-to
[1]:
https://flak.tedunangst.com/post/turn-your-network-inside-out-with-one-pfconf-trick
