A new Request for Comments is now available in online RFC libraries.
RFC 9347
Title: Aggregation and Fragmentation Mode for
Encapsulating Security Payload (ESP) and
Its Use for IP Traffic Flow Security (IP-TFS)
Author: C. Hopps
Status: Standards Track
Stream: IETF
Date: January 2023
Mailbox: [email protected]
Pages: 31
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-ipsecme-iptfs-19.txt
URL: https://www.rfc-editor.org/info/rfc9347
DOI: 10.17487/RFC9347
This document describes a mechanism for aggregation and fragmentation
of IP packets when they are being encapsulated in Encapsulating
Security Payload (ESP). This new payload type can be used for various
purposes, such as decreasing encapsulation overhead for small IP
packets; however, the focus in this document is to enhance IP Traffic
Flow Security (IP-TFS) by adding Traffic Flow Confidentiality (TFC)
to encrypted IP-encapsulated traffic. TFC is provided by obscuring
the size and frequency of IP traffic using a fixed-size,
constant-send-rate IPsec tunnel. The solution allows for congestion
control, as well as nonconstant send-rate usage.
This document is a product of the IP Security Maintenance and Extensions
Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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