From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Clemens Eisserer <linuxhippy@gmail.com>
Cc: netfilter@vger.kernel.org
Subject: Re: [NFLOG] How to determine the connection a packet belongs to?
Date: Tue, 07 Jun 2011 01:39:36 +0200 [thread overview]
Message-ID: <4DED6538.3090404@netfilter.org> (raw)
In-Reply-To: <BANLkTimnO5UzNvq6SfuWc7osck=QL=HrMw@mail.gmail.com>
On 06/06/11 16:26, Clemens Eisserer wrote:
> Hi,
>
> We are using ulog2/nflog for logging packets and connections, which
> works quite well.
>
> However we haven't found a reliable way to determine which packets
> belong to which connection.
> There seem to be two distinct IDs for both packets (nflog) as well as
> connection IDs issued by conntrack,
> is there some correlation between the two IDs?
No.
> Or is there any other (maybe even better) way to determine which
> logged packet belongs to which connection?
You can build the tuple from the packet in user-space to look up the
conntrack via libnetfilter_conntrack.
next prev parent reply other threads:[~2011-06-06 23:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-06 14:26 [NFLOG] How to determine the connection a packet belongs to? Clemens Eisserer
2011-06-06 23:39 ` Pablo Neira Ayuso [this message]
2011-06-07 10:40 ` Clemens Eisserer
2011-06-07 11:59 ` Jan Engelhardt
2011-06-07 12:25 ` Srinivasa T N
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