NAT Behavioral Requirements for ICMP
RFC 5508, “NAT Behavioral Requirements for ICMP”, is a Best Current Practice document published in April 2009 by P. Srisuresh, B. Ford, S. Sivakumar, S. Guha. It has since been updated by RFC 7857. The canonical text is published by the RFC Editor.
Abstract
This document specifies the behavioral properties required of the Network Address Translator (NAT) devices in conjunction with the Internet Control Message Protocol (ICMP). The objective of this memo is to make NAT devices more predictable and compatible with diverse application protocols that traverse the devices. Companion documents provide behavioral recommendations specific to TCP, UDP, and other protocols. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
The canonical text of RFC 5508 is hosted at rfc-editor.org. Available in TXT,HTML.
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