From: Patrick McHardy <kaber@trash.net>
To: netfilter@vger.kernel.org
Subject: Re: conntrack is bad during DDoS?
Date: Mon, 08 Oct 2007 10:45:18 +0200 [thread overview]
Message-ID: <4709EE1E.2060206@trash.net> (raw)
In-Reply-To: <470562BF.3090504@andrei.myip.org>
[Please keep me CCed]
Florin Andrei wrote:
> Patrick McHardy wrote:
>
>>
>> Please try 2.6.23 once its out (or the current -rc), it should behave
>> better.
>>
>> 2.6.24 will include stateless NAT again for 1:1 mappings.
>
>
> So, can you elaborate a little bit?
> I understand the thing about stateless NAT and 2.6.24 - that's very good
> news, too bad it's not in older versions. :-)
>
> But what's different in 2.6.23-rc that will make it better in my situation?
The eviction algorithms scans up to a maximum of 8 entries before
giving up instead of stopping at the end of the hash chain (which
is a single entry with a properly sized hash). So the chances
of finding an unconfirmed entry to evict are better.
prev parent reply other threads:[~2007-10-08 8:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-02 21:53 conntrack is bad during DDoS? Florin Andrei
2007-10-04 9:22 ` Patrick McHardy
2007-10-04 22:01 ` Florin Andrei
2007-10-04 22:12 ` Florin Andrei
2007-10-08 8:46 ` Patrick McHardy
2007-10-08 8:45 ` Patrick McHardy [this message]
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