Cloud service [was: RE: EC2 and GAE means end of ip address reputation industry? (Re: Intrustion attempts from Amazon EC2 IPs)]

Tue Jun 24 14:52:25 UTC 2008

For the reason you stated, "much to the chagrin of receivers".  Easier to
sell a service to customers downstream if it's being done in the network,
without MX changing.

Frank

-----Original Message-----
From: Ken Simpson [mailto:ksimpson at mailchannels.com] 
Sent: Tuesday, June 24, 2008 8:38 AM
To: frnkblk at iname.com
Cc: 'Christopher Morrow'; nanog at nanog.org
Subject: Re: Cloud service [was: RE: EC2 and GAE means end of ip address
reputation industry? (Re: Intrustion attempts from Amazon EC2 IPs)]

> Source IP blocking makes up a large portion of today's spam arrest
> approach,
> so we shouldn't discount the CPU benefits of that approach too
> quickly.
>
> I'm not sure where today's technology is in regards for caching the
> first 1
> to 10kB of a session....once enough information is garnered to
> block, issue
> TCP RSETs.  If it's good, free the contents of the cache.

What's your interest in mopping up spam in the middle of the network?
Usually spam is viewed as a leaf-node problem (much to the chagrin of
receivers, actually).

Regards,
Ken

--
Ken Simpson
CEO

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