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Date:      Thu, 20 Dec 2001 17:54:57 -0800
From:      Kris Kennaway <kris@FreeBSD.ORG>
To:        corecode <corecode@corecode.ath.cx>
Cc:        Will Andrews <will@csociety.org>, kris@FreeBSD.ORG, will@FreeBSD.ORG, ports@FreeBSD.ORG
Subject:   Re: cvs commit: ports/security Makefile ports/security/labrea Makefile distinfo pkg-comment pkg-descr pkg-plist ports/security/labrea/files patch-Makefile
Message-ID:  <20011220175457.A70525@citusc17.usc.edu>
In-Reply-To: <20011220131632.18a81a81.corecode@corecode.ath.cx>; from corecode@corecode.ath.cx on Thu, Dec 20, 2001 at 01:16:32PM %2B0100
References:  <200112190822.fBJ8MkE86981@freefall.freebsd.org> <20011219205113.D82898@citusc17.usc.edu> <20011220011710.C73815@squall.waterspout.com> <20011220131632.18a81a81.corecode@corecode.ath.cx>

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On Thu, Dec 20, 2001 at 01:16:32PM +0100, corecode wrote:
> On Thu, 20 Dec 2001 01:17:10 -0500 Will Andrews <will@csociety.org> wrote:
>=20
> > On Wed, Dec 19, 2001 at 08:51:13PM -0800, Kris Kennaway wrote:
> > > >   Log:
> > > >   Add labrea 2.3, a defense mechanism against CodeRed.
> > >=20
> > > Does this really belong in the ports collection?  I still get the
> > > occasional CodeRed hit on my webservers, but they're definitely in
> > > decline, and unless (until :) there are future vulnerabilities in the
> > > same IIS files this doesn't seem to have much utility.
> >=20
> > Maybe.  It seems to be more generic than just protection against
> > CodeRed, but rather worms in general.  But I'm just the guy who
> > reviewed the port and committed it.  :-)
>=20
>=20
> actually LaBrea is no defense against CodeRed but it's a general tarpit.
> this means you let it run on free (unassigned) ip addresses (no need for
> another computer, just let it run) and it will grab all connection tries
> (which must be "illegal" (scans) because these ips are not assigned to
> computers) and hold them via setting window size to 0 (=3D "hold on, i'll
> get back to you"). this results in a minimal bandwidth usage (not more
> than 1k per several addresses iirc) but stops (or slows) the scanner.

OK, that makes sense - thanks for clarifying.

Kris

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