[67658] in North American Network Operators' Group
Re: Anti-spam System Idea
daemon@ATHENA.MIT.EDU (Daniel Reed)
Mon Feb 16 10:29:08 2004
Date: Mon, 16 Feb 2004 10:25:23 -0500 (EST)
From: Daniel Reed <n@ml.org>
Reply-To: nanog@merit.edu
To: nanog@merit.edu
In-Reply-To: <4030203B.4892FBF6@aset.com>
Errors-To: owner-nanog-outgoing@merit.edu
On 2004-02-15T20:43-0500, Jon R. Kibler wrote:
) jlewis@lewis.org wrote:
) > On Sun, 15 Feb 2004 Valdis.Kletnieks@vt.edu wrote:
) > > If we block outbound port 25 SYN packets from origin addresses in the DHCP
) > > address blocks, we solve the problem for everybody.
) EXACTLY correct!
Not quite exactly, no; perhaps by adding the blocking of incoming ACKs with
a source port of 25 might be closer to solving the problem "for everybody".
But this is part of my point: There is no simple answer, because spammers
will eventually [hire someone to] come up with a technical work around for
whatever you do.
--
Daniel Reed <n@ml.org> http://naim-users.org/nmlorg/ http://naim.n.ml.org/
"True nobility lies not in being superior to another man, but in being
superior to one's previous self."
