[51938] in North American Network Operators' Group
Re: How do you stop outgoing spam?
daemon@ATHENA.MIT.EDU (Rafi Sadowsky)
Tue Sep 10 16:21:36 2002
Date: Tue, 10 Sep 2002 23:21:05 +0300 (IDT)
From: Rafi Sadowsky <rafi-nanog@meron.openu.ac.il>
Reply-To: <nanog@merit.edu>
To: <alex@yuriev.com>
Cc: <nanog@merit.edu>, Eliot Lear <lear@cisco.com>
In-Reply-To: <Pine.LNX.4.10.10209100939570.3036-100000@s1.yuriev.com>
Errors-To: owner-nanog-outgoing@merit.edu
## On 2002-09-10 09:45 -0400 alex@yuriev.com typed:
>
> > Hi Eliot
> >
> > Maybe I'm missing something obvious but do how you get rate-limiting per
> > TCP *flow* with Cisco IOS ?
>
> It is more trouble than its worth.
IMHO there are other problems beside SPAM that can use per flow
shaping/rate-limiting
> SPAM is not a technical problem. It is a
> social problem. Using technical methods is not going to solve the problem.
> In the end, every time we come up with another method of detecting and
> blocking spam, another method is bypassing this defense is going to show up.
How about using a combination of technical and "social" measures
For example in a Cyber Cafe use passive technical measures to count the
total number of outbound SMTP sessions and charge 1$ per Email over an
average rate of 2 Emails/minute and 10$ per Email exceeding a rate of 10
per minute
>
> Alex
>
>
--
Rafi
