From: Florian Westphal <fw@strlen.de>
To: Frank Myhr <fmyhr@fhmtech.com>
Cc: "Pekka Järvinen" <pekka.jarvinen@gmail.com>, netfilter@vger.kernel.org
Subject: Re: nftables port forward on DHCP interface to static IP
Date: Mon, 19 Apr 2021 23:51:45 +0200 [thread overview]
Message-ID: <20210419215145.GA4841@breakpoint.cc> (raw)
In-Reply-To: <0111b128-5639-7694-3e9a-67452408f71e@fhmtech.com>
Frank Myhr <fmyhr@fhmtech.com> wrote:
> Nitpick: just in my personal opinion, better not to use table name that is a
> nftables keyword ("filter"). I know the wiki does it lots of places. And
> it's not technically wrong. But:
"filter" is not a reserved keyword.
> > # TCP SYN (CT NEW)
> > tcp flags & (fin|syn|rst|ack) != syn ct state {new} drop
>
> You're filtering in a nat chain, generally not a good idea. My understanding
> is that, since nat is based on connection tracking, this chain will see only
> the FIRST packet of each connection.
Correct.
next prev parent reply other threads:[~2021-04-19 21:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-18 15:59 nftables port forward on DHCP interface to static IP Pekka Järvinen
2021-04-18 19:23 ` Frank Myhr
2021-04-19 17:22 ` Pekka Järvinen
2021-04-19 21:20 ` Frank Myhr
2021-04-19 21:51 ` Florian Westphal [this message]
2021-04-20 1:21 ` Frank Myhr
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