Re: [secdir] sec-dir review of draft-ietf-avt-forward-shifted-red-05.txt
Qiaobing Xie <qiaobing.xie@gmail.com> Mon, 19 July 2010 17:06 UTC
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Date: Mon, 19 Jul 2010 12:07:05 -0500
From: Qiaobing Xie <qiaobing.xie@gmail.com>
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To: Derek Atkins <derek@ihtfp.com>
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Cc: tom111.taylor@bell.net, iesg@ietf.org, avt-chairs@tools.ietf.org, secdir@ietf.org
Subject: Re: [secdir] sec-dir review of draft-ietf-avt-forward-shifted-red-05.txt
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Derek, Thanks for the comments. I will try to reword the security section to make it more readable when I update the draft. -Q Derek Atkins wrote: > Hi, > > I have reviewed this document as part of the security directorate's > ongoing effort to review all IETF documents being processed by the > IESG. These comments were written primarily for the benefit of the > security area directors. Document editors and WG chairs should treat > these comments just like any other last call comments. > > This document defines a simple enhancement to RFC 2198 to support RTP > sessions with forward-shifted redundant encodings, i.e., redundant > data sent before the corresponding primary data. Forward-shifted > redundancy can be used to conceal losses of a large number of > consecutive media frames (e.g., consecutive loss of seconds or even > tens of seconds of media). > > The security considerations section is not written in gramatically > correct English. While this reader was able to decipher the meaning, > I hope that someone with more editorial capabilities can massage the > text into actual correct English sentences. > > Beyond the editorial issues, the document does address the single > issue I see, which is the potential denial of service attack where the > sender sends bogus forward-shifted data, potentially claiming large > buffers in the receiver. Once the security considerations section is > cleaned up it will more clearly state that "outrageous values" should > be ignored. > > -derek >
- [secdir] sec-dir review of draft-ietf-avt-forward… Derek Atkins
- Re: [secdir] sec-dir review of draft-ietf-avt-for… Qiaobing Xie