From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Gregory Nietsky <gregory@distrotech.co.za>
Cc: netfilter@vger.kernel.org
Subject: Re: libnetfilter_conntrack userspace nat via NFQUEUE
Date: Mon, 4 Jun 2012 14:20:11 +0200 [thread overview]
Message-ID: <20120604122011.GA15680@1984> (raw)
In-Reply-To: <4FCBD18F.2020607@distrotech.co.za>
On Sun, Jun 03, 2012 at 11:05:19PM +0200, Gregory Nietsky wrote:
>
> Greetings
>
> I have been working on userspace nat via NFQUEUE i have it working
> but something does not make
> sense to me.
So, you're implementing NAT in user-space with NFQUEUE, right?
> the code below is to build the conntrack and attach the nat attributes.
>
> i cannot get it working unless i use the following
>
> nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_ESTABLISHED);
Yes, this is mandatory to create a new conntrack entry, with and without
NAT.
> the documentation and examples suggest this is not correct however this way
> it works no other options function.
>
> as the documentation is not extensive perhaps someone will be able
> to comment on this.
>
> am i correct to only use this for TCP connections.
>
> the code for this is available @
> http://pbx.distrotech.co.za/svn/taploop/trunk/ in the framework
> directory.
I have a patch here to improve integration between ctnetlink and
nfnl_queue, but you'll have to wait to see that in mainstream.
prev parent reply other threads:[~2012-06-04 12:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-03 21:05 libnetfilter_conntrack userspace nat via NFQUEUE Gregory Nietsky
2012-06-04 12:20 ` Pablo Neira Ayuso [this message]
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