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From: Friedrich Lobenstock <fl@fl.priv.at>
To: Netfilter Development Mailinglist <netfilter-devel@lists.netfilter.org>
Subject: question regarding iptables tuning (was Re: iptables denial of services)
Date: Sat, 17 Apr 2004 19:22:58 +0200	[thread overview]
Message-ID: <408167F2.9060501@fl.priv.at> (raw)
In-Reply-To: <Pine.LNX.4.44.0404171843020.22016-100000@filer.marasystems.com>

Henrik Nordstrom wrote on 17.04.2004 18:49 MET:
> On Sat, 17 Apr 2004, Friedrich Lobenstock wrote:
> 
>>Can you give some details about those limits? Are there any numbers 
>>availabe that relate that to memory/cpu/....?
> 
> The default number of sessions is based on amount of memory but can
> easily be tuned at boot time.. or even runtime but then with a slight
> performance penalty.
> 
> http://www.netfilter.org/documentation/FAQ/netfilter-faq-3.html#ss3.7

Thanks, but can you give some background info about the hash size parameter 
of ip_conntrack as the description on the page above is rather lacking any 
reasons:
- Is this parameter automatically sized according to the amount of
   installed memory?
- How is it related to ip_conntrack_max?
- What's the amount of memory that is allocated based on this
   parameter?

Any suggestions for those parameters that are based on your experiences?

-- 
MfG / Regards
Friedrich Lobenstock

  reply	other threads:[~2004-04-17 17:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-15 18:31 iptables denial of services Jorge Garcia
2004-04-16  7:10 ` Ozgur AKAN
2004-04-16 10:03 ` Henrik Nordstrom
2004-04-17 11:13   ` Friedrich Lobenstock
2004-04-17 16:49     ` Henrik Nordstrom
2004-04-17 17:22       ` Friedrich Lobenstock [this message]
2004-04-17 18:18         ` question regarding iptables tuning (was Re: iptables denial of services) Henrik Nordstrom
2004-04-17 18:53           ` Friedrich Lobenstock
2004-04-17 23:49             ` Henrik Nordstrom
2004-04-17 19:08         ` Pablo Neira
2004-04-17 19:58           ` Friedrich Lobenstock
2004-04-17 20:18             ` Friedrich Lobenstock
2004-04-17 20:33               ` Martin Josefsson
2004-04-17 20:41                 ` Friedrich Lobenstock
2004-04-17 20:58                   ` Martin Josefsson
2004-04-17 21:13                     ` Friedrich Lobenstock
2004-04-22 12:23                     ` Herve Eychenne
2004-04-22 20:44                       ` Friedrich Lobenstock
2004-04-18 12:55             ` Tarek W.
2004-04-18 13:29             ` Tarek W.

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