From: "Samuel Jean" <jix@bugmachine.ca>
To: "Ross Vandegrift" <ross@kallisti.us>,
<netfilter-devel@lists.netfilter.org>
Subject: Re: iptables match rule for DNS RR?
Date: Wed, 4 Apr 2007 13:49:28 -0000 [thread overview]
Message-ID: <twig.1175694568.67940@bugmachine.ca> (raw)
In-Reply-To: <20070404131825.GB20515@kallisti.us>
On Wed, Apr 4, 2007, Ross Vandegrift <ross@kallisti.us> said:
> Hi everyone,
Hi!
>
> Is there any netfilter work, either production or in development, that
> provides a way to filter traffic based on DNS RR type?
Sorry -- matching packets based on RR is not possible inside the kernel.
Netfilter needs to make a decision pretty fast and cannot wait for DNS
queries
each time a packet passes by. IMO, this makes huge sense.
However, it's possible to queue packets and let userspace tools handle the
decision. That's where such match should be implemented. Still, the
latency remains the same.
>
> Thanks in advance for any info,
>
> Ross
>
HTH,
Samuel
next prev parent reply other threads:[~2007-04-04 13:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-04 13:18 iptables match rule for DNS RR? Ross Vandegrift
2007-04-04 13:49 ` Samuel Jean [this message]
2007-04-04 13:56 ` Ross Vandegrift
2007-04-04 20:12 ` Jan Engelhardt
2007-04-04 20:39 ` Ross Vandegrift
2007-04-04 20:49 ` Patrick McHardy
2007-04-05 13:52 ` Ross Vandegrift
2007-04-06 0:17 ` Michael Rash
2007-04-04 14:20 ` Patrick McHardy
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