Re: [secdir] secdir review of draft-ietf-mpls-lsp-ping-relay-reply
Sean Turner <turners@ieca.com> Thu, 18 December 2014 20:03 UTC
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From: Sean Turner <turners@ieca.com>
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Date: Thu, 18 Dec 2014 15:01:58 -0500
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To: Loa Andersson <loa@pi.nu>
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Cc: The IESG <iesg@ietf.org>, draft-ietf-mpls-lsp-ping-relay-reply@tools.ietf.org, secdir@ietf.org
Subject: Re: [secdir] secdir review of draft-ietf-mpls-lsp-ping-relay-reply
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Roger. I’ll keep an eye out for a revision. spt On Dec 15, 2014, at 01:29, Loa Andersson <loa@pi.nu> wrote: > Sean, > > We had a "wrinkle" on this :( ! Two of the authors discovered (very > late) something that needs to be addressed. > > I asked the AD to send the ducment back to the working group for "more > work". I hope it be a smooth process, and that we'll get the document > timely back on track again. > > Anyhow, I expect that the authors takes care of your comments during the > "more work" process. > > /Loa > > On 2014-12-14 03:29, Sean Turner wrote: >> Do not be alarmed. 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 with the intent >> of improving security requirements and considerations in IETF drafts. >> Comments not addressed in last call may be included in AD reviews >> during the IESG review. Document editors and WG chairs should treat >> these comments just like any other last call comments. >> >> Version: 06 >> Summary: Ready with some non-security/non-privacy nits. >> >> Ping mechanisms always give me the heebie-jeebies [1] >> because of the security concerns associated with them (i.e., DoS, >> spoofing/hijacking/etc., and unauthorized disclosure). This document >> specifies an extension to the existing ECHO mechanism in RFC 4379 >> and it does nothing to address these concerns in fact it increases the >> concerns wrt DoS. *BUT* it rightly points this increase exposure out in >> the security considerations section. It provides remediation techniques >> similar to those specified in RFC 4379: rate limit and validate source >> against access list. This draft, unlike RFC 4379, does recommend that >> operators wishing to not disclose their nodes blank the address out in >> the TLV. This draft also refers to RFC 4379 for additional security >> considerations. >> >> WARNING - questions and nits follow: >> >> s3 - 1st paragraph: Relayed Echo Reply “replaces” Echo Reply - does this >> mean you’re deprecating the use of “Echo Reply”? >> >> s4.1: Is the outermost label allowed to be set to 255 to support the >> “ping” mode or must it always be set to 1, 2, etc. to support “traceroute" >> mode - as described in RFC 4379 s4.3? I know s5 is just an example >> but it really looks like this extension is just supposed to be for fault >> isolation. >> >> s4.1 - last paragraph: Does the next initiator put it’s address in the stack >> before or after the previous initiator? I assume it’s after, but I maybe >> missed that part? Would be good to state that explicitly. >> >> Cheers, >> spt >> >> [1] http://en.wikipedia.org/wiki/Heebie-jeebies_(idiom) >> > > -- > > > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64
- [secdir] secdir review of draft-ietf-mpls-lsp-pin… Sean Turner
- Re: [secdir] secdir review of draft-ietf-mpls-lsp… Loa Andersson
- Re: [secdir] secdir review of draft-ietf-mpls-lsp… Sean Turner
- Re: [secdir] secdir review of draft-ietf-mpls-lsp… lizho.jin@gmail.com