ISE write-up for: draft-donley-behave-deterministic-cgn-08
"In some instances, Service Providers have a legal logging requirement
to be able to map a subscriber's inside address with the address used
on the public Internet (e.g. for abuse response). Unfortunately,
many Carrier Grade NAT logging solutions require active logging of
dynamic translations. Carrier Grade NAT port assignments are often
per-connection, but could optionally use port ranges. Research
indicates that per-connection logging is not scalable in many
residential broadband services. This document suggests a way to
manage Carrier Grade NAT translations in such a way as to
significantly reduce the amount of logging required while providing
traceability for abuse response. While the authors acknowledge that
IPv6 is a preferred solution, Carrier Grade NAT is a reality in many
networks, and is needed in situations where either customer equipment
or Internet content only supports IPv4; this approach should in no
way slow the deployment of IPv6."
It was submitted to me by Chris Donley.
It was reviewed for me by Brian Carpenter and Wes George,
its authors have worked with the reviewers to improve it.
Wes suggested that perhaps it could be folded in with other subsetIPv4
drafts, but its authors decided to continue with it in the Independent Stream.
The document asks nothing of IANA.
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