From: Payam Chychi <pchychi@gmail.com>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: Jonathan Tripathy <jonnyt@abpni.co.uk>,
"netfilter@vger.kernel.org" <netfilter@vger.kernel.org>
Subject: Re: How Expensive?
Date: Wed, 28 Jul 2010 00:41:18 -0700 [thread overview]
Message-ID: <4C4FDF1E.9050501@gmail.com> (raw)
In-Reply-To: <alpine.LSU.2.01.1007280811370.26636@obet.zrqbmnf.qr>
On 10-07-27 11:12 PM, Jan Engelhardt wrote:
> On Wednesday 2010-07-28 03:17, Payam Chychi wrote:
>
>
>> it's much less and actually recommended than running all rules in
>> default/less chains as each pkt must traverse the entire chain to be
>> processed
>>
> Packets need not traverse an entire chain! All of -j ACCEPT, -j DROP,
> -j RETURN and -g xxx cause an early exit from the current chain in one
> way or another.
>
a packet must traverse an entire chain unless it meets a given condition
and as such its better to have more specific chains to jump packet
through rather than having to wait until the end of a chain, ie. 1000
line chain.
ps, my prevoius reply was suppose to say "its much less overhead to use
more chains and actually NOT recommended to run all rules in
default/less chains", sorry for the confusion.
prev parent reply other threads:[~2010-07-28 7:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-28 0:23 How Expensive? Jonathan Tripathy
2010-07-28 1:17 ` Payam Chychi
2010-07-28 6:12 ` Jan Engelhardt
2010-07-28 7:41 ` Payam Chychi [this message]
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