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Stream Control Transmission Protocol (SCTP) Network Address Translation Support

Document Type Expired Internet-Draft (individual)
Author Claudio Porfiri
Last updated 2022-11-07 (Latest revision 2022-04-29)
Stream (None)
Intended RFC status (None)
Expired & archived
Additional resources GitHub Repository
GitHub Repository
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Stream Control Transmission Protocol (SCTP) provides a reliable communications channel between two end-hosts in many ways similar to the Transmission Control Protocol (TCP). With the widespread deployment of Network Address Translators (NAT), specialized code has been added to NAT functions for TCP that allows multiple hosts to reside behind a NAT function and yet share a single IPv4 address, even when two hosts (behind a NAT function) choose the same port numbers for their connection. This additional code is sometimes classified as Network Address and Port Translation (NAPT). This document describes the protocol extensions needed for the SCTP endpoints and the mechanisms for NAT functions necessary to provide similar features of NAPT in the single point and multipoint traversal scenario.


Claudio Porfiri

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)