All of lore.kernel.org
 help / color / mirror / Atom feed
From: Pablo Neira Ayuso <pablo@netfilter.org>
To: pauloric@contatogs.com.br
Cc: netfilter@vger.kernel.org
Subject: Re: manual : CONNTRACK EXPRESSIONS
Date: Fri, 23 Jul 2021 17:00:43 +0200	[thread overview]
Message-ID: <20210723150043.GA16034@salvia> (raw)
In-Reply-To: <328573485.4.1626983857363.JavaMail.zimbra@contatogs.com.br>

Hi,

On Thu, Jul 22, 2021 at 04:57:37PM -0300, pauloric@contatogs.com.br wrote:
> Hi
> 
> Near  CONNTRACK EXPRESSIONS at manual I think that should be good to insert something like:
> 
> ct {state | direction | status | mark | expiration | helper | label}
> ....
> ct count [over]    <------->
> 
> and just a little bellow it has already an example of it.
> ...
> filter input tcp dport 22 meter test { ip saddr ct count over 2 } reject
> 
> Maybe a include at Table 55. Conntrack expressions  too ??? <----

Since 0.9.7, manpage contains a reference to 'ct count'.

There is also an example usage:

       restrict the number of parallel connections to a server.

           nft add set filter ssh_flood '{ type ipv4_addr; flags dynamic; }'
           nft add rule filter input tcp dport 22 add @ssh_flood '{ ip saddr ct count over 2 }' reject

> Could it be inserted at https://wiki.nftables.org/wiki-nftables/index.php/Quick_reference-nftables_in_10_minutes#Ct    ???

Updated.

Thanks

      reply	other threads:[~2021-07-23 15:00 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31 17:47 nft show counter Frank Wunderlich
2021-03-31 21:23 ` Frank Myhr
2021-03-31 21:40 ` Florian Westphal
2021-03-31 23:08   ` Frank Myhr
2021-04-01  8:08     ` Aw: " Frank Wunderlich
2021-04-01 16:42       ` Anton Rieger
2021-04-02 17:16         ` Frank Myhr
2021-04-02 17:42           ` Frank Wunderlich
2021-04-03 17:04             ` Frank Myhr
2021-04-02 22:22           ` Anton Rieger
2021-04-01 18:14       ` Florian Westphal
2021-04-01 18:31         ` Frank Wunderlich
2021-04-01 20:03           ` Florian Westphal
2021-04-02 11:58         ` Aw: " Frank Wunderlich
2021-04-02 17:10           ` Frank Myhr
2021-04-01 18:21     ` Florian Westphal
2021-07-22 19:57   ` manual : CONNTRACK EXPRESSIONS pauloric
2021-07-23 15:00     ` Pablo Neira Ayuso [this message]

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=20210723150043.GA16034@salvia \
    --to=pablo@netfilter.org \
    --cc=netfilter@vger.kernel.org \
    --cc=pauloric@contatogs.com.br \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.