From: Mart Frauenlob <mart.frauenlob@chello.at>
To: netfilter@vger.kernel.org
Subject: Re: iptable rule addition has no effect .
Date: Fri, 05 Mar 2010 10:32:51 +0100 [thread overview]
Message-ID: <4B90CFC3.7070409@chello.at> (raw)
In-Reply-To: <cfeab66d1003042133r1ed729b4rfe6569e000643bc4@mail.gmail.com>
On 05.03.2010 06:33, netfilter-owner@vger.kernel.org wrote:
> i m flooding an interface using hping with UDP packets .
>
> I have a rule
>
> iptables -A INPUT -p udp -j DROP
>
> I can see all packets are getting dropped . i can see processor
> utilization is high using "top" command and system becomes slow .
>
> But while flooding , if i add rule
>
> iptables -I INPUT -j ACCEPT .
>
> still packets gets dropped .
>
> But if i stop flooding and start hping again { with same rules } ,
> packets are accepted .
>
> Note : I am working on an embedded enviornement with 128kB of RAM .
>
> any hints is really appreciated .
>
guessing:
could it be you use conntrack, and nf_conntrack_max is reached?
prev parent reply other threads:[~2010-03-05 9:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-05 5:33 iptable rule addition has no effect ratheesh k
2010-03-05 9:32 ` Mart Frauenlob [this message]
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