RFC 7422 on Deterministic Address Mapping to Reduce Logging in Carrier-Grade NAT Deployments
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Subject: RFC 7422 on Deterministic Address Mapping to Reduce Logging in Carrier-Grade NAT Deployments
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A new Request for Comments is now available in online RFC libraries. RFC 7422 Title: Deterministic Address Mapping to Reduce Logging in Carrier-Grade NAT Deployments Author: C. Donley, C. Grundemann, V. Sarawat, K. Sundaresan, O. Vautrin Status: Informational Stream: Independent Date: December 2014 Mailbox: c.donley@cablelabs.com, cgrundemann@gmail.com, v.sarawat@cablelabs.com, k.sundaresan@cablelabs.com, Olivier@juniper.net Pages: 14 Characters: 33575 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-donley-behave-deterministic-cgn-08.txt URL: https://www.rfc-editor.org/rfc/rfc7422.txt In some instances, Service Providers (SPs) 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 logging solutions for Carrier-Grade NATs (CGNs) require active logging of dynamic translations. CGN port assignments are often per connection, but they 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 CGN translations in such a way as to significantly reduce the amount of logging required while providing traceability for abuse response. IPv6 is, of course, the preferred solution. While deployment is in progress, SPs are forced by business imperatives to maintain support for IPv4. This note addresses the IPv4 part of the network when a CGN solution is in use. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/rfc.html Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC