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Fwd: RFC 7359 on Layer 3 Virtual Private Network (VPN) Tunnel Traffic Leakages in Dual-Stack Hosts/Networks



Folks,

FYI: <https://www.rfc-editor.org/rfc/rfc7359.txt>

Best regards,
Fernando Gont




-------- Forwarded Message --------
Subject: RFC 7359 on Layer 3 Virtual Private Network (VPN) Tunnel
Traffic Leakages in Dual-Stack Hosts/Networks
Date: Tue, 26 Aug 2014 18:23:00 -0700 (PDT)
From: rfc-editor@xxxxxxxxxxxxxx
Reply-To: ietf@xxxxxxxx
To: ietf-announce@xxxxxxxx, rfc-dist@xxxxxxxxxxxxxx
CC: drafts-update-ref@xxxxxxxx, rfc-editor@xxxxxxxxxxxxxx

A new Request for Comments is now available in online RFC libraries.


        RFC 7359

        Title:      Layer 3 Virtual Private Network
                    (VPN) Tunnel Traffic Leakages in Dual-Stack
                    Hosts/Networks
        Author:     F. Gont
        Status:     Informational
        Stream:     IETF
        Date:       August 2014
        Mailbox:    fgont@xxxxxxxxxxxxxxx
        Pages:      12
        Characters: 26506
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-opsec-vpn-leakages-06.txt

        URL:        https://www.rfc-editor.org/rfc/rfc7359.txt

The subtle way in which the IPv6 and IPv4 protocols coexist in
typical networks, together with the lack of proper IPv6 support in
popular Virtual Private Network (VPN) tunnel products, may
inadvertently result in VPN tunnel traffic leakages.  That is,
traffic meant to be transferred over an encrypted and integrity-
protected VPN tunnel may leak out of such a tunnel and be sent in the
clear on the local network towards the final destination.  This
document discusses some scenarios in which such VPN tunnel traffic
leakages may occur as a result of employing IPv6-unaware VPN
software.  Additionally, this document offers possible mitigations
for this issue.

This document is a product of the Operational Security Capabilities for
IP Network Infrastructure 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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-- 
Fernando Gont
e-mail: fernando@xxxxxxxxxxx || fgont@xxxxxxxxxxxxxxx
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1