The IESG has received a request from the Operational Security Capabilities for IP Network Infrastructure WG (opsec) to consider the following document: - 'Enhanced Feasible-Path Unicast Reverse Path Filtering' <draft-ietf-opsec-urpf-improvements-03.txt> as Best Current Practice
The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the [email protected] mailing lists by 2019-08-15. Exceptionally, comments may be sent to [email protected] instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document identifies a need for improvement of the unicast Reverse Path Filtering techniques (uRPF) (see BCP 84) 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 BCP 84). However, as shown in this draft, the existing feasible-path uRPF still has shortcomings. This document describes an enhanced feasible-path uRPF technique, which aims to be more flexible (in a meaningful way) about directionality than the feasible-path uRPF. It can potentially alleviate ISPs' concerns about the possibility of disrupting service for their customers, and encourage greater deployment of uRPF techniques. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-opsec-urpf-improvements/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-opsec-urpf-improvements/ballot/ No IPR declarations have been submitted directly on this I-D. The document contains these normative downward references. See RFC 3967 for additional information: rfc4271: A Border Gateway Protocol 4 (BGP-4) (Draft Standard - IETF stream) _______________________________________________ OPSEC mailing list [email protected] https://www.ietf.org/mailman/listinfo/opsec
