Date: Fri, 16 Mar 2001 07:15:12 -0800 From: Ron 'The InSaNe One' Rosson <insane@lunatic.oneinsane.net> To: freeBSD-security@freeBSD.org Subject: Re: Multiple vendors FTP denial of service (fwd) Message-ID: <20010316071511.A46313@lunatic.oneinsane.net> In-Reply-To: <20010315215913.A70990@mollari.cthul.hu>; from kris@obsecurity.org on Thu, Mar 15, 2001 at 09:59:13PM -0800 References: <98righ$100l$1@FreeBSD.csie.NCTU.edu.tw> <004b01c0ada9$99f7b540$db9497cf@singingtree.com> <20010315215913.A70990@mollari.cthul.hu>
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Kris Kennaway (kris@obsecurity.org) wrote:
> On Thu, Mar 15, 2001 at 03:42:29PM -0800, Michael A. Dickerson wrote:
> > > 4.1 from Aug 10th is hurt by it.
> > >
> > > ---Mike
> > >
> >
> > So is 4.3-beta (otherwise known as 4-stable) from March 8. ftpd uses 100%
> > cpu and memory use grows until the kernel runs out of swap space and starts
> > killing processes. This was an ftp connection with a regular username and
> > password, in an average home directory.
>
> I'm pretty sure (but haven't tested) that resource limits will prevent
> this problem. Your ftpd shouldn't be using large amount of memory
> under normal operating procedures, so you can set those to reasonable
> values and not suffer any ill effects.
>
> Kris
But, by default are the resource limits set properly to avoid this out
of the box? Or does one have to make the mod themselves.
TIA
--
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Ron Rosson ... and a UNIX user said ...
The InSaNe One rm -rf *
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