From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Sebastian Zander <sebastian.zander@gmx.de>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: Conntrack helper question
Date: Fri, 30 Nov 2012 14:42:17 +0100 [thread overview]
Message-ID: <20121130134217.GA7133@1984> (raw)
In-Reply-To: <50B41163.9020102@gmx.de>
On Tue, Nov 27, 2012 at 12:03:31PM +1100, Sebastian Zander wrote:
> Hi netfilter devs,
>
> In current Netfilter is there still a way for a conntrack helper to
> listen to all TCP traffic _independent_ of ports to look for primary
> connections (other than registering with 65535 tuples)? Not that I
> advocate this, I just have some old piece of code that apparently
> did that in ancient 2.6 kernels (ports set to zero in the tuple).
With recent kernels you can attach your helper via -j CT --helper ...
to all ports for some specific layer 4 protocol, eg. TCP.
The ports specified in the registration are simply ignored, we still
keep them there to support for old behaviour for quite some time
though.
prev parent reply other threads:[~2012-11-30 13:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-27 1:03 Conntrack helper question Sebastian Zander
2012-11-30 13:42 ` Pablo Neira Ayuso [this message]
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