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RFC 9063
Title: Host Identity Protocol Architecture
Author: R. Moskowitz, Ed.,
M. Komu
Status: Informational
Stream: IETF
Date: July 2021
Mailbox: [email protected],
[email protected]
Pages: 41
Obsoletes: RFC 4423
I-D Tag: draft-ietf-hip-rfc4423-bis-20.txt
URL: https://www.rfc-editor.org/info/rfc9063
DOI: 10.17487/RFC9063
This memo describes the Host Identity (HI) namespace, which provides
a cryptographic namespace to applications, and the associated
protocol layer, the Host Identity Protocol, located between the
internetworking and transport layers, that supports end-host
mobility, multihoming, and NAT traversal. Herein are presented the
basics of the current namespaces, their strengths and weaknesses, and
how a HI namespace will add completeness to them. The roles of the HI
namespace in the protocols are defined.
This document obsoletes RFC 4423 and addresses the concerns raised by
the IESG, particularly that of crypto agility. The Security
Considerations section also describes measures against flooding
attacks, usage of identities in access control lists, weaker types of
identifiers, and trust on first use. This document incorporates
lessons learned from the implementations of RFC 7401 and goes further
to explain how HIP works as a secure signaling channel.
This document is a product of the Host Identity Protocol Working Group of the
IETF.
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.
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