A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Operational Security Capabilities for IP
Network Infrastructure WG of the IETF.
Title : Enhanced Feasible-Path Unicast Reverse Path Forwarding
Authors : Kotikalapudi Sriram
Doug Montgomery
Jeffrey Haas
Filename : draft-ietf-opsec-urpf-improvements-04.txt
Pages : 20
Date : 2019-08-30
Abstract:
This document identifies a need for and proposes improvement of the
unicast Reverse Path Forwarding (uRPF) techniques (see RFC 3704) for
detection and mitigation of source address spoofing (see BCP 38).
The strict uRPF is inflexible about directionality, the loose uRPF is
oblivious to directionality, and the current feasible-path uRPF
attempts to strike a balance between the two (see RFC 3704).
However, as shown in this document, the existing feasible-path uRPF
still has shortcomings. This document describes enhanced feasible-
path uRPF (EFP-uRPF) techniques, which are more flexible (in a
meaningful way) about directionality than the feasible-path uRPF (RFC
3704). The proposed EFP-uRPF methods aim to significantly reduce
false positives regarding invalid detection in source address
validation (SAV). Hence they can potentially alleviate ISPs'
concerns about the possibility of disrupting service for their
customers, and encourage greater deployment of uRPF techniques. This
document updates RFC 3704.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsec-urpf-improvements/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-opsec-urpf-improvements-04
https://datatracker.ietf.org/doc/html/draft-ietf-opsec-urpf-improvements-04
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-opsec-urpf-improvements-04
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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