Port Management to Reduce Logging in Large-Scale NATs
RFC 7768, “Port Management to Reduce Logging in Large-Scale NATs”, is an Informational document published in January 2016 by T. Tsou, W. Li, T. Taylor, J. Huang. The canonical text is published by the RFC Editor.
Abstract
Various IPv6 transition strategies require the introduction of large- scale NATs (e.g., AFTR and NAT64) to share the limited supply of IPv4 addresses available in the network until transition is complete. There has recently been debate over how to manage the sharing of ports between different subscribers sharing the same IPv4 address. One factor in the discussion is the operational requirement to log the assignment of transport addresses to subscribers. It has been argued that dynamic assignment of individual ports between subscribers requires the generation of an excessive volume of logs. This document suggests a way to achieve dynamic port sharing while keeping log volumes low.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 7768 is hosted at rfc-editor.org. Available in TXT,HTML.
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