From: Pablo Neira Ayuso <pablo@netfilter.org>
To: "Gáspár Lajos" <swifty@freemail.hu>
Cc: JeHo Park <linuxpark@gmail.com>,
netfilter list <netfilter@vger.kernel.org>
Subject: Re: [HELP] why the string match does not work in nat tables?
Date: Tue, 01 Feb 2011 13:32:48 +0100 [thread overview]
Message-ID: <4D47FD70.7010709@netfilter.org> (raw)
In-Reply-To: <4D47F61A.3010702@freemail.hu>
On 01/02/11 13:01, Gáspár Lajos wrote:
> The string match is much like a toy and not a real help in the iptables.
> (Sorry, I do not really "believe" in this match. But also I understand
> the need for such match. Sometimes it can be very usefull.) As already
> mentioned before, the main problem is the fragmentation.
fragmentation is not a problem for algorithms like knuth-pratt-morris,
which is implemented in textsearch. boyer-moore is faster but if the
text is splitted among fragments, it won't find a matching.
segmentation is a problem for textsearch, it wouldn't be hard to extend
the string matching to make it flow-based.
next prev parent reply other threads:[~2011-02-01 12:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 1:53 [HELP] why the string match does not work in nat tables? JeHo Park
2011-01-31 2:09 ` Jan Engelhardt
[not found] ` <AANLkTik02D=agfFrc8VX+Wh4WAg_odm6cEcpbXvbgtqM@mail.gmail.com>
2011-01-31 2:38 ` Jan Engelhardt
2011-01-31 2:47 ` JeHo Park
2011-01-31 2:47 ` JeHo Park
2011-01-31 2:51 ` Jan Engelhardt
2011-01-31 2:51 ` Jan Engelhardt
2011-01-31 2:59 ` JeHo Park
2011-01-31 3:34 ` netfilter - u32 module Sridhar Kumar
2011-01-31 3:34 ` Sridhar Kumar
2011-01-31 9:36 ` Pablo Neira Ayuso
2011-01-31 15:31 ` Sridhar Kumar
2011-01-31 9:35 ` [HELP] why the string match does not work in nat tables? Pablo Neira Ayuso
2011-01-31 10:33 ` Pascal Hambourg
2011-01-31 11:17 ` JeHo Park
2011-02-01 1:50 ` JeHo Park
2011-02-01 11:51 ` Jan Engelhardt
2011-02-01 12:01 ` Gáspár Lajos
2011-02-01 12:32 ` Pablo Neira Ayuso [this message]
2011-02-01 12:35 ` Jan Engelhardt
2011-02-01 12:41 ` Pablo Neira Ayuso
2011-02-01 12:47 ` Jan Engelhardt
2011-02-01 12:57 ` Pablo Neira Ayuso
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