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Re: [BEHAVE] New Version Notification for draft-nishizuka-cgn-deployment-considerations-00.txt

Simon Perreault <simon.perreault@viagenie.ca> Wed, 03 April 2013 08:44 UTC

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Date: Wed, 03 Apr 2013 10:45:36 +0200
From: Simon Perreault <simon.perreault@viagenie.ca>
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Subject: Re: [BEHAVE] New Version Notification for draft-nishizuka-cgn-deployment-considerations-00.txt
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Le 2013-04-02 18:07, Dan Wing a écrit :
> http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-5.3.2
> would benefit from some discussion of the privacy impact of an ISP
> storing destination information, and should also describe memory impact
> (in the CGN) if the subscriber uses the same source port to visit many
> different destinations (if CGN does not store the list of destinations,
> CGN will generate a log for every packet sent to a new destination).
>   Applications such as bittorrent can consume a lot of memory in a CGN
> that is configured for destination logging.

Another issue with this section is that it ignores bulk port allocation. 
It says:

"It is confirmed by the verification that by logging destination 
address, only 4% of amount of log is increased in ASCII format."

The percentage would be much higher with bulk port allocation.

Simon

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