From: Jozsef Kadlecsik <kadlec@netfilter.org>
To: "U.Mutlu" <um@mutluit.com>
Cc: netfilter@vger.kernel.org
Subject: Re: [iptables/ipset] Bug? -m set --match-set myset src --packets-gt 2 -j ...
Date: Mon, 16 Oct 2023 21:54:17 +0200 (CEST) [thread overview]
Message-ID: <c256ace-de63-e18-3386-132ee8a8d6c3@netfilter.org> (raw)
In-Reply-To: <652D8D7C.4080803@mutluit.com>
Hi,
On Mon, 16 Oct 2023, U.Mutlu wrote:
> could a kind soul please check why the ipset "match-set" rule below isn't
> working.
>
> It jumps to the chain MY2 only if "--packets-gt 0" or
> "--packets-gt 1" is used, but not for any higher values! :-)
>
> I'm new to ipset, but this very much looks like a bug in iptables or ipset,
> IMHO.
>
>
> firewall.sh :
> -------------
> #...
> ipset destroy blacklist
> ipset create blacklist hash:ip hashsize 4096 timeout 300 counters
> ipset destroy bl2
> ipset create bl2 hash:ip hashsize 4096 timeout 600 counters
> #...
> iptables -N MY2
> #...
> iptables -A MY2 -j RETURN
> #...
> iptables -A INPUT -j SET --exist --add-set blacklist src
> iptables -A INPUT -m set --match-set blacklist src --packets-gt 2 -j MY2
Reverse the order of the rules above. With the first one you continuously
(re)add the elements to the set with packet number 1.
Best regards,
Jozsef
> OS is stock Debian 11 ("bullseye"):
>
> # iptables --version
> iptables v1.8.7 (nf_tables)
>
> # ipset --version
> ipset v7.10, protocol version: 7
>
> # uname -a
> Linux p21 6.1.0-0.deb11.11-amd64 #1 SMP PREEMPT_DYNAMIC Debian
> 6.1.38-4~bpo11+1 (2023-08-08) x86_64 GNU/Linux
>
> # cat /etc/os-release
> PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
> NAME="Debian GNU/Linux"
> VERSION_ID="11"
> VERSION="11 (bullseye)"
> ...
>
--
E-mail : kadlec@blackhole.kfki.hu, kadlecsik.jozsef@wigner.hu
PGP key : https://wigner.hu/~kadlec/pgp_public_key.txt
Address : Wigner Research Centre for Physics
H-1525 Budapest 114, POB. 49, Hungary
next prev parent reply other threads:[~2023-10-16 19:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 19:22 [iptables/ipset] Bug? -m set --match-set myset src --packets-gt 2 -j U.Mutlu
2023-10-16 19:54 ` Jozsef Kadlecsik [this message]
2023-10-16 23:30 ` U.Mutlu
2023-10-17 0:43 ` U.Mutlu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c256ace-de63-e18-3386-132ee8a8d6c3@netfilter.org \
--to=kadlec@netfilter.org \
--cc=netfilter@vger.kernel.org \
--cc=um@mutluit.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox