Re: [ippm] I-D Action: draft-gandhi-ippm-stamp-srpm-03.txt

"Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com> Tue, 25 May 2021 23:35 UTC

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From: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>
To: "li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com>, Tommy Pauly <tpauly=40apple.com@dmarc.ietf.org>, ippm <ippm@ietf.org>
Thread-Topic: [ippm] I-D Action: draft-gandhi-ippm-stamp-srpm-03.txt
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/IBnKimXnHDzBcG0T6ZCUKWXmVP8>
Subject: Re: [ippm] I-D Action: draft-gandhi-ippm-stamp-srpm-03.txt
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Hi Zhenqiang,

Thanks for your review comments. Please see inline with <RG>..

From: ippm <ippm-bounces@ietf.org> on behalf of li_zhenqiang@hotmail.com <li_zhenqiang@hotmail.com>
Date: Thursday, May 13, 2021 at 12:18 AM
To: Tommy Pauly <tpauly=40apple.com@dmarc.ietf.org>rg>, ippm <ippm@ietf.org>
Subject: Re: [ippm] I-D Action: draft-gandhi-ippm-stamp-srpm-03.txt
Hello Tommy and All,

I believe this work is useful, especially the way to direct the session-reflector to reflect the test packets along a specific path, which can be the reverse path from session-sender to session-reflector, or an explicit path specified in segment list sub TLV.

<RG> Thanks.

I wonder there are security problems redarding the return address sub tlv since this feature can be used to direct the test packets to a malicious node indicated by the return address. This feature may also be used to direct a group of session-reflectors to send their test packets to a target node indicated by the return address to enforce DDOS attack to the target. Security Considerations should take these into account.

<RG> Agree. Following text was proposed in another email thread.

“The STAMP extensions defined in this document may be used for
   potential "proxying" attacks.  For example, a Session-Sender
   may specify a return path that has a destination different from that
   of the Session-Sender.  But normally, such attacks will not happen in an
   SR domain where the Session-Senders and Session-Reflectors belong to the same
   domain.  In order to prevent using the extension defined
   in this document for proxying any possible attacks, the return path
   has destination to the same node where the forward path
   is from.“

Welcome your review comments.
Thanks,
Rakesh



BTW, is this an adoption call for this draft?

Best Regards,
Zhenqiang Li
________________________________
li_zhenqiang@hotmail.com

From: Tommy Pauly<mailto:tpauly=40apple.com@dmarc.ietf.org>
Date: 2021-05-08 04:42
To: IETF IPPM WG<mailto:ippm@ietf.org>
Subject: Re: [ippm] I-D Action: draft-gandhi-ippm-stamp-srpm-03.txt
Hi IPPM,

This draft has been discussed and debated at length before, and the chairs would like to get input from the WG on their thoughts on this version of the document and its direction. Given the interaction with other working groups, we’d like to make progress on this in a timely fashion.

Please do send your thoughts and feedback to the list, particularly if you support this work, or if you have concerns new or existing.

Best,
Tommy


On May 3, 2021, at 9:42 AM, Rakesh Gandhi <rgandhi.ietf@gmail.com<mailto:rgandhi.ietf@gmail.com>> wrote:

Hi WG,
This revision contains following updates:

  *   Welcome Richard as a co-author
  *   Merge Segment List Sub-TLVs
  *   Various editorial changes

Welcome your review comments and suggestions.

Thanks,
Rakesh (for co-authors)


On Thu, Apr 29, 2021 at 7:03 PM <internet-drafts@ietf.org<mailto:internet-drafts@ietf.org>> wrote:

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Performance Measurement WG of the IETF.

        Title           : Simple TWAMP (STAMP) Extensions for Segment Routing Networks
        Authors         : Rakesh Gandhi
                          Clarence Filsfils
                          Daniel Voyer
                          Mach(Guoyi) Chen
                          Bart Janssens
                          Richard Foote
        Filename        : draft-gandhi-ippm-stamp-srpm-03.txt
        Pages           : 12
        Date            : 2021-04-29

Abstract:
   Segment Routing (SR) leverages the source routing paradigm.  SR is
   applicable to both Multiprotocol Label Switching (SR-MPLS) and IPv6
   (SRv6) data planes.  This document specifies RFC 8762 (Simple Two-Way
   Active Measurement Protocol (STAMP)) extensions for SR networks, for
   both SR-MPLS and SRv6 data planes by augmenting the optional
   extensions defined in RFC 8972.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-gandhi-ippm-stamp-srpm/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-gandhi-ippm-stamp-srpm-03
https://datatracker.ietf.org/doc/html/draft-gandhi-ippm-stamp-srpm-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-gandhi-ippm-stamp-srpm-03


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<http://tools.ietf.org/>g/>.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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